FORM 6-K

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

Report to Foreign Issuer

Pursuant to Rule 13a-16 or 15d-16 of

the Securities Exchange Act of 1934

For the month of August, 2003

Commission File Number:

~~Origin~~ORIGIN ~~Energy~~ENERGY ~~Limited~~LIMITED

(Translation of registrant’s name into English)

Level 39

AMP Centre

50 Bridge Street

SYDNEY NSW 2000

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F x Form 40-F ¨

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):

Note: Regulation S-T Rule 101(b)(1) only permits the submission in paper of a Form 6-K if submitted solely to provide an attached annual report to security holders.

Indicate by check mark if the registrant is submitting the ~~Form6~~Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1)(7):

Note: Regulation S-T Rule 101(b)(1)(7) only permits the submission in paper of a Form 6-K if submitted to furnish a report or other document that the registrant foreign private issuer must furnish and make public under the laws of the jurisdiction in which the registrant is incorporated, domiciled or legally organized (the registrant’s “home country”), or under the rules of the home country exchange on which the registrant’s securities are traded, as long as the report or other document is not a press release, is not required to be and has not been distributed to the registrant’s security holders, and, if discussing a material event, has already been the subject of a Form 6-K submission or other Commission filing on EDGAR.

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934. Yes ¨ No x

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82-

INDEX TO EXHIBITS

Item 1. ASX ~~announcement~~Release “~~Results~~ ~~for~~Hovea ~~Year~~8 ~~ended~~Progress ~~June~~Report, 30Onshore Perth Basin, ~~2003~~Western Australia”, dated August 207, 2003. 2. ~~Media~~ASX ~~Release~~Announcement “~~Strong~~Substantial ~~contributions~~Holder by– ~~existing~~Change ~~businesses~~of Interests” and ~~recent~~attached ~~acquisitions~~Form ~~drive~~604 ~~26%~~– ~~increase~~Notice inof ~~net~~Change ~~profit”~~of Interests of Substantial Holder, dated August 207, 2003. 3. ~~Directors’~~ASX ~~Report~~Announcement “Notice of ~~Results~~Date for ~~the~~Determining ~~year~~Holders ~~ended~~of ~~June~~Securities” ~~30,~~and ~~2003~~attached ~~dated~~Notice ~~August~~under ~~20,~~Section ~~2003~~ 633(4.) ~~ASX~~of ~~Appendix~~the ~~Form~~Corporations 4EAct ~~Final~~2001, ~~Report~~ dated August 208, 2003. 54. ASX ~~announcement~~Release “~~Results~~Hovea ~~Announcement~~8 ~~year~~Progress ~~ended~~Report ~~June~~and 30Jingemia 2 Update, ~~2003~~Onshore –Perth ~~Presentation”~~Basin, Western Australia, dated August 2014, 2003. 65. ~~Final~~ASX ~~Results~~ Announcement ~~full~~“Appendix ~~year~~3B ~~ended~~Notice” ~~June~~and ~~30,~~attached ~~2003~~Appendix ~~presentation~~3B Notice, dated August 2018, 2003. 76. ASX ~~announcement~~Announcement “~~Exploration~~Origin ~~and~~Energy ~~Production~~Limited ~~Presentation”~~(ORG): ~~dated~~Takecover ~~August~~Bid ~~21,~~for ~~2003~~Oil 8.Company ~~Exploration~~of Australia Limited (OCA)” and ~~Production~~attached ~~Presentation~~Notice under Section 633(1) of the Corporations Act 2001, dated August 21, 2003.

~~The~~ASX ~~information~~Release ~~contained in this report is incorporated by reference into the Registration Statement on Form F-3 (file no. 333-103886).~~

LOGO

Item 1.

To	Company Announcements Office	Facsimile	1300 300 021
Company	Australian Stock Exchange Limited	Date	20 August 2003
From	Bill Hundy	Pages	44
Subject	Results for Year Ended 30 June 2003

7 August 2003

~~This~~Hovea ~~Transmittal~~8 isProgress ~~confidential.~~Report, ~~If you~~Onshore ~~have~~Perth ~~received this document in error~~Basin, ~~please~~Western ~~contact~~Australia ~~Origin Energy immediately.~~

WeOrigin ~~attach~~Energy Resources Limited* advises that the ~~following~~Hovea ~~documents~~8 ~~relating~~development towell ~~Origin~~operated by ARC Energy’s ~~Results~~NL ~~for~~and located in the ~~year~~onshore ~~ended~~Perth 30Basin ~~June~~Production ~~2003:~~Licence L1 was at 0600 hours WST preparing to cement 245 mm (9 5/8 inch) casing.

1Operations since the last report have been to drill from 1863 metres to 2211 metres measured depth to the top of the Dongara Sandstone reservoir and run 245 mm (9 5/8 inch) casing to 2206 metres. ~~Media~~Top ~~Release~~Dongara Sandstone was intersected at an 84 degree angle approximately 20 metres above the original oil water contact.

2.Forward ~~Directors’~~Program ~~Review~~

3.Following ~~Final~~cementing ~~Report~~of –the ~~ASX~~casing ~~Appendix~~the 4Ehorizontal section in the Dongara Sandstone reservoir will be drilled in 216 mm (8 ½ inch) hole.

Background

The Hovea 8 well is being drilled from the Hovea Production Facility as a horizontal well with the horizontal Dongara Sandstone section located between the Hovea 3 and Hovea 4 wells. The Hovea 8 well design incorporates the design and drilling parameters from the recent successful deviated well program together with a number of technically advanced drilling techniques. The well is designed to provide optimal drainage of the Hovea reserves, redundancy in the production system, and the ability to meet long term production targets.

Participants in L1 and L2 (excluding the Dongara, Mondarra and Yardarino fields) and Hovea 8 are as follows:

Origin Energy Developments Pty Limited*		50.00	%
Arc Energy NL (Operator)		50.00	%

*a wholly owned subsidiary of Origin Energy Limited

For further information contact:

John Piper

Executive General Manager—Oil and Gas Production

Phone: 07 3858 0681

Email: john.piper@upstream.originenergy.com.au

Origin Energy Limited ABN 30 000 051 696 · Level 39, AMP Centre, 50 Bridge Street Sydney NSW 2000

GPO Box 5376, Sydney NSW 2001 · Telephone (02) 9220 6400 · Facsimile (02) 9235 1661 · www.originenergy.com.au

LOGO

Item 2

To	Company Announcements Office	Facsimile	1300 300 021

Company	Australian Stock Exchange	Date	7 August 2003

From	Bill Hundy	Pages	8

Subject	SUBSTANTIAL HOLDER—CHANGE OF INTERESTS

We wish to advise that the substantial shareholding of Origin Energy Limited group in Oil Company of Australia Limited (OCA) has altered and attach the Form 604 Notice of Change of Interests of Substantial Holder.

Regards

LOGO

Bill Hundy

Company Secretary

02 9220 6467 – bill.hundy@originenergy.com.au

~~Item~~Copy 2.to: Company Secretary

Media Release

20 August 2003

Strong contributions by existing businesses and recent acquisitions drive 26% increase in net profit

Origin Energy announced today a profit after tax and outside equity interests of $162 million for the year ended 30 June 2003, a 26% increase on the profit for the same period last year. Earnings per share increased by 23% to 24.8 cents.

Highlights

• Revenue up 38% to $3,352 million.

• EBITDA up 21% to $491.3 million.

• Net profit after tax up 26% to $162 million.

• Free cash flow up 37% to $350 million.

• Earnings per share increased 23% to 24.8 cents per share.

• Capital expenditure up 30% to $523 million.

• Strong balance sheet with net debt to capitalisation of 29%.

• Total dividends for the full year of 10 cents per share franked to 4 cents.

• Dividend Reinvestment Plan 2.5% discount to apply.

In announcing the final dividend the Chairman, Mr Kevin McCann said “Based on the strength of the company’s current and expected cash flows Directors had previously advised of their intention to target dividend payments at around 40% of earnings per share.

“In line with this objective, we are pleased to announce a 5 cent final dividend franked to 2 cents will be paid on 3 October 2003 to shareholders of record on 19 September 2003 for which the dividend reinvestment plan (DRP) will apply. A 2.5% discount under the DRP will apply for this dividend.

This brings total dividends for the year to 10 cents per share (four cents franked), a doubling of the dividend paid last year.” Mr McCann said.

The increased profit for the year has been mainly driven by contributions from the retail business reflecting the acquisition of CitiPower and good returns from electricity purchase contracts. Initial contributions from oil production in the Perth Basin and the Mt Stuart Power Station also boosted results.

Commenting on the result, Managing Director Mr Grant King said “The Retail business increased contribution to EBITDA by 39% to $232 million. Our investments in the electricity retail business in particular have delivered results with energy retailing contributing close to half of our total EBITDA.”

“A particularly pleasing feature of this year’s result has been the strength of the Company’s cash flow which has largely funded capital expenditure of $523 million. Borrowings increased by only $99 million with gearing at year end a modest 29%,” he said.

Commenting on the outlook for the coming year, Mr King said: “While retail earnings will benefit from reduced costs following the integration of recently acquired businesses and the cessation of agency payments to the Victorian Government, higher electricity purchasing costs will offset these gains. A significant increase in oil production from the Hovea and Jingemia fields in the Perth Basin and a full year contribution from the Mt Stuart Power Station will add to performance.”

“Looking further ahead, the prospects for the company remain strong with development of the BassGas Project, Otway Gas Project, SEA Gas Pipeline and Coal Seam Gas on schedule and within budgeted costs. These projects will all contribute to growth in the medium term.”

“The company’s modest gearing and strong cash flow sees the company well placed to fund our major capital projects and take advantage of opportunities that continue to arise in the energy sector.”

“Taking these factors into account the outlook for the coming year is for Origin to achieve its long-term target for growth in earnings per share of 10-15% per annum.”

For further information on this media release, please contact:

Mr Grant King		Mr Angus Guthrie
Managing Director		Manager, Investor Relations
Origin Energy		Origin Energy
Telephone: (02) 9220 6435		Telephone: (02) 9220 6558

Item 3.

20 August 2003

Directors’ Review of Results for the year ended 30 June 2003

The Directors submit their review of the results for the year ended 30 June 2003.

Financial Review

Profit and Dividend Declaration

Origin Energy reported a net profit after tax and outside equity interests of $162.0 million for the year ended 30 June 2003, a 26% increase on the profit in the prior year.

Earnings per share increased by 23% to 24.8 cents per share. A final dividend of 5 cents per share, franked to 2 cents, will be paid on 3 October 2003 to shareholders of record on 19 September 2003. Origin shares will trade ex-dividend as from 15 September 2003. This final dividend will lift the total dividend paid for the year to 10 cents per share (4 cents franked) from 5 cents per share (fully franked) in the prior year.

The Board has also determined that the Dividend Reinvestment Plan will continue to apply and that for this dividend, a discount of 2.5% will apply to the shares allotted under the Plan.

Financial Highlights

	2002/03 ($m)		2001/02 ($m)		% Change
Revenue	3,352		2,429		38
Net after Tax Profit	162.0		128.7		26
EBITDA	491.3		404.6		21
Free Cash Flow	350		256		37
Capital Expenditure	524		403		30
Earnings per Share	24.8 cents		20.2 cents		23
Net Debt/Capitalisation	29	%	28	%
OCAT/Funds Employed	15.6	%	13.7	%

The main factors contributing to the profit improvement include:

• Higher oil prices and oil sales from new producing fields in the Perth Basin;

• Increased contribution from retailing following the acquisition of the CitiPower retail business in July 2002, reduction in electricity purchasing costs due to favourable electricity contracts and pool prices and a further reduction in retained profit payments to the Victorian Government; and

• Increased contribution from power generation with the acquisition of the Mt Stuart Power Station in December 2002.

The funding requirements for growth capital and acquisitions has seen net debt increase from $633 million at 30 June 2002 to $732 million at 30 June 2003, resulting in a final net debt to capitalisation ratio of 29%.

Subsequent to the end of the financial year Origin has made a takeover offer for the shares in Oil Company of Australia Limited (OCA) that it does not already own. Origin had an 85.23% interest in OCA and has offered $4.25 per share for the remaining shares. The total acquisition cost is expected to be $74 million and the offer is due to close on 22 September 2003.

Financial Performance

Total revenue increased by 38% to $3,352.3 million and includes distributions from Envestra of $12.8 million.

External sales revenue increased to $3,326.5 million from $2,389.2 million in the prior year. The increase was due mainly to the initial contribution from the electricity retail business acquired from CitiPower, the cessation of the Gascor agency arrangement and the full year effect of prior year tariff increases.

Segment contributions to EBITDA were:

	EBITDA $m
	2002/03	2001/02	% change
Exploration & Production	187.6	185.2	1
Retail	232.1	166.8	39
Generation	48.3	30.2	60
Networks	23.4	22.5	4
Total	491.3	404.6	21

Year on year comparisons are provided in the divisional highlights section below. This year’s EBITDA includes a provision for $4.5 million to fully cover deficiencies under the Group’s defined benefit superannuation plan.

Depreciation and amortisation expense increased by 13% to $196.1 million reflecting new capital expenditure (detailed below) and increased amortisation of intangibles and retail systems.

EBIT again showed strong growth with a 28% improvement to $295.3 million.

Net interest expense for the year was $48.7 million, up 14% from the prior year. The increase is largely due to the costs associated with funding of acquisitions totalling $276 million and consequent higher average debt balances during the year.

Tax expense for the year totalled $80.2 million, an increase of 48% on the prior year. The increase primarily reflects the higher pre-tax earnings and the non-recognition of tax loss benefits from Envestra. As advised in the December half results, these loss benefits have been deferred pending resolution of their availability with the Australian Tax Office. There has been no significant progress in this matter over the last six months.

Capital Expenditure

Capital expenditure on growth and stay-in-business projects was $249 million, 3% higher than the prior year.

Stay-in-business capital expenditure associated with the maintenance of ongoing operations was $97 million. The Exploration and Production segment accounted for $74 million of this expenditure, of which two thirds was attributable to the Cooper Basin.

Growth capital expenditure associated with new business initiatives was $152 million. This included:

• $62 million on development of the BassGas Project and the Otway gas Project in the offshore Otway Basin;

• $30 million exploring and developing coal seam gas (CSG) resources in Queensland;

• $24 million on exploration and development in the Perth Basin;

• $14 million on systems for full retail contestability (FRC) in electricity and natural gas;

• $9 million on exploration and development activities around the producing centres of the Cooper Basin, Surat Basin, Denison Trough and Otway Basin; and

• $13 million on a variety of other growth projects.

Capital expenditure on acquisitions totalled $276 million, which included the acquisition of the CitiPower retail business for $132 million, the purchase of the Mt Stuart Power Station and contracts for $89 million and acquisition of additional CSG interests for $50 million.

Total capital expenditure including acquisitions, was $524 million, 30% higher than the prior year.

The company expects to outlay $74 million during the first quarter of the current financial year should the proposed acquisition of the minority interests in OCA be successful.

Cash Flow

The primary measure used by the company to measure its performance is operating cash flow after tax over average funds employed (referred to as the OCAT Ratio). The measure is calculated from EBITDA as the primary source of cash contribution, but adjusted for non-cash items, stay-in-business capital expenditure, changes in working capital and tax paid. Funds employed are averaged over the year. Funds employed increased significantly following the various acquisitions during the year. However, the strong performance in EBITDA, management of working capital and control of stay-in-business capital expenditure resulted in proportionately greater improvement in operating cash flow.

These factors produced an OCAT Ratio of 15.6% for the year ended 30 June 2003.

Cash flow available for funding growth and distributions to shareholders (free cash flow) was $350 million compared with $256 million in the prior year, an increase of 37%.

Funding and Capital Management

The company’s balance sheet remains strong with a net debt to capitalisation ratio of 29% as at 30 June 2003. This compares with 28% as at 30 June 2002. Additional equity of $33.6 million was raised through the operation of the Dividend Reinvestment Plan and exercise of share options under the Senior Executive Option Plan. Net borrowings have increased from $633 million at 30 June 2002 to $732 million at 30 June 2003. The increase is primarily the result of increased expenditure on acquisitions and major capital projects (totalling $524.3 million) significantly offset by strong cash flow from operations resulting in an increase in net debt of $99 million. Interest cover as measured by EBIT/interest expense remains robust at 6.1 times.

Origin completed a US$250 million US Private Placement issuance with all proceeds hedged to Australian dollars. The issuance has provided 7 to 15 year debt finance significantly extending the group’s debt maturity profile.

Risk Management

The company continued to hedge a significant portion of its exposure to both the oil price and the USD exchange rate. Currently, the company has hedged 58% of exposure to oil and related products over the 12 months to 30 June 2004 at prices averaging over $US24.50 per barrel. A US$1.00 movement in the price of oil over the next year will impact Origin’s EBITDA by approximately $1.9 million.

With regard to foreign exchange, due to a combination of external hedging and ongoing US dollar expenditure associated with major upstream projects, Origin is significantly hedged over the next 12 months and expects that variability in the USD exchange rate will have minimal impact on group profitability.

Origin only undertakes energy contracting and trading activities as part of optimising the value of its physical assets and energy retailing activities.

The Board oversees the commodity risk management policies, which incorporate short-term and long-term risk limits for the trading of electricity and natural gas, oil and renewable energy credits (RECs). The Board monitors compliance with these policies and continues to review risk management strategies on a regular basis.

Returns to Shareholders

A final dividend of 5 cents per share, franked to 2 cents per share has been declared, payable on 3 October 2003 to shareholders of record on 19 September 2003.

The Dividend Reinvestment Plan will continue to operate and for this dividend a discount of 2.5% will apply to the shares allotted under the Plan.

The final dividend will lift total dividends for the year to 10 cents per share (franked to 4 cents) from 5 cents per share (fully franked) in the prior year.

Origin will have limited capacity to frank dividends for several years. The introduction of the new tax consolidation regime may further defer the payment of tax by Origin and its wholly owned subsidiaries.

Employee Share and Option Plans

During the year the company issued 2,630,000 options under the Senior Executive Option Plan at an exercise price of $3.56 each. The options were issued subject to Origin performance hurdles and the exercise price was equal to the market price at the date of approval.

Under the Employee Share Plan, 445,626 shares were purchased on market for issuance to employees. The cost of shares purchased for the Employee Share Plan have been expensed and an amount of $1.8 million charged against profit before tax.

Details regarding a review of the operation and accounting of the Employee Share and Option Plans are provided in the Divisional Highlights under People, Health, Safety and Environment.

Issued Capital

An additional 7,547,299 shares were issued during the period under Origin’s Dividend Reinvestment Plan and 2,333,300 shares were issued as a result of the exercise of options. As at 30 June 2003, Origin had 657,709,751 shares on issue.

Corporate Governance

The Australian Stock Exchange (ASX) Corporate Governance Council issued the Principles of Good Corporate Governance and Best Practice Recommendations (“the Principles”) on 31 March 2003.

Origin has reviewed its current practices and established that it is substantially in compliance with the Principles. Origin has updated many of its practices and policies and will continue to review those to enable it to make a full statement on its compliance with the Principles in its 2004 Annual Report.

The 2003 Annual Report, which is due to be released on 16 September 2003, will provide a statement of Corporate Governance and will report by reference to the Principles. At the same time Origin will launch a Corporate Governance section of its website which will be progressively updated during the year. The Chairman will make a further report on Corporate Governance at the Annual General Meeting on 16 October 2003.

Divisional Performance Highlights

Exploration and Production

	2002/03 $m	2001/02 $m	% Change
EBITDA	187.6	185.2	1
EBIT	103.3	103.2	—

Sales Volumes

	2002/03	2001/02	% change
Natural Gas (PJ)	74.0	72.5	2
Crude Oil (kbbls)	853.8	804.1	6
Condensate/naphtha (kbbls)	644.2	676.4	(5	)
LPG (ktonnes)	62.3	61.4	1
Ethane (ktonnes)	35.5	46.9	(24	)
Total (PJe)	87.4	86.3	1

External sales revenue for the Exploration and Production segment increased by 9% to $286 million as revenue from Perth Basin oil sales, higher oil prices, and increased gas sales more than offset revenues foregone following the sale of Eromanga Basin oil assets in the previous year.

EBITDA for the period was $187.6 million, up $2.4 million or 1% on the previous year. EBIT was steady at $103.3 million.

Total gas sales were 74 PJ, an increase of 2%. CSG sales continued to grow and now represent 12% of total gas sales.

Oil production was boosted by three Perth Basin oil fields coming on stream in the second half of the year. As a result, oil sales increased by 6% to 853,800 bbls, despite the sale of the Bodalla oil field and associated assets in the Eromanga Basin midway through the prior year.

Origin’s 2P reserves increased by 38% to 1,573 PJe largely as a result of the inclusion of reserves from the Thylacine and Geographe fields, additions through CSG acquisitions and the reappraisal of the Myall Creek gas field in the Surat Basin. A total of 83 development and appraisal wells and 36 exploration wells were drilled during the year with 95 wells cased for future production providing an overall success rate of 80%.

Cooper Basin (Queensland/South Australia)

The Cooper Basin is Australia’s largest onshore gas production province and is a significant supplier of gas to southern and eastern Australia. Under a long-term gas supply arrangement signed with AGL in December, Origin and the other Cooper Basin producers will supply up to 505 PJ of gas over 14 years from 2003. Origin’s share of the contract is 71 PJ.

Coal Seam Gas (CSG)

In December 2002 Origin, and 85% owned Oil Company of Australia Limited (OCA), signed an agreement with AGL to supply 340 PJ of gas for 15 years from May 2005. About 52% will be supplied from OCA’s CSG interests in central Queensland.

This contract enhanced OCA’s position as the largest CSG producer in Australia. CSG supplies about 25% of Queensland’s total gas demand. OCA’s CSG production is 30 TJ/day from three fields, which have a current production capacity of 55 TJ/day.

Through acquisition and appraisal drilling, CSG reserves increased from 296 PJ to 472 PJ, and recent drilling on the Durham field is expected to substantially increase these reserves. Significant progress has been made in the development planning of the Durham field with the granting of production and pipeline licences and the approval of an Indigenous Land Usage Agreement with native titleholders.

Other producing CSG fields have maintained strong performances with the Dawson Valley (Moura) fields reaching record production levels.

To date $225 million has been invested by Origin and OCA in the acquisition and development of CSG interests including $50 million in additional interests in the Fairview and Durham fields acquired in the prior year. Total development cost for CSG is expected to be several hundred million dollars over future years and in the coming year a further $100 million will be spent building a gas processing plant at the Durham field; developing the Mungi field at Moura; and appraising the Talinga field, which is based on the Walloon Coals near the Wallumbilla to Brisbane gas pipeline.

Perth Basin

Origin continued a highly successful gas and oil exploration program in the Perth Basin.

Following last year’s oil discovery at Hovea, the field was successfully appraised and developed and is now producing at about 4,000 barrels of oil per day (bopd).

Long term production tests were undertaken during the June quarter on the Jingemia and Eremia fields in the Perth Basin and established flow rates of around 1,800 and 1,000 bopd respectively.

By July 2003 these fields combined had produced more than one million barrels of oil (Origin’s share 500,000 barrels). Origin’s share of proved and probable reserves is currently estimated at 5.4 million barrels.

The Beharra Springs North 1 gas field, discovered in late 2001, commenced production in July 2002, increasing gas sales from the Beharra Springs gas plant by 32%. A further small gas pool was discovered in the exploration well Hovea 2 during 2002 and is yet to be developed.

Origin has embarked on another significant drilling program in the Perth Basin to appraise and develop the Hovea, Eremia and Jingemia oil fields and explore for gas close to the Beharra Springs gas plant and in areas further north. The program, which may include the drilling of up to 10 wells, began in July 2003 and is expected to further lift production rates.

BassGas Project (Yolla field: Tasmania/Victoria)

The BassGas Project is scheduled to deliver 20 PJ of gas per annum to Victoria from July 2004, representing about 10% of that State’s natural gas demand. Origin holds a 37.5% interest and is the operator. Origin’s Retail Division will purchase the gas for sale to residential and business customers.

Following State and Federal environmental approvals, construction began in January 2003 and the project is now 45% complete.

The project will cost $450 million (Origin’s share $170 million) and will include an un-manned offshore platform over the Yolla gas field, a 147-kilometre subsea pipeline to a shore crossing near Kilcunda and a 32-kilometre onshore pipeline to a gas plant under construction at Lang Lang.

Otway Gas Project (Thylacine and Geographe fields: Tasmania/Victoria)

The Otway Gas Project will develop the Thylacine and Geographe gas fields and is designed to deliver 60PJ of sales gas each year to South Australia and Victoria by mid 2006, as well as significant volumes of condensate and LPG. During the year the interests of the joint venturers, Woodside, Benaris, CalEnergy and Origin were equalised across both fields. Origin has a 29.75% interest in the project, which is operated by Woodside Petroleum Limited.

The project received joint venture approval late in 2002 to proceed to development. Environmental impact statements were released for public exhibition in June and a preliminary development concept has been submitted to the Victorian and Federal Governments.

Phase 1 of the project will involve the development of the Thylacine field including a platform, subsea pipeline and a gas processing plant with anticipated expenditure of around $750 million (Origin’s share $220 million). Phase 2 will see the subsea development of the Geographe field and tie-in to the Thylacine facility. Phase 3 will add compression at the gas plant to maximise recovery from the fields. Total project cost is estimated at around $1 billion.

Greenfields Exploration

Origin’s exploration program focussed on gas prone areas close to developed infrastructure.

Origin participated in seven exploration and appraisal wells in greenfield areas. Of the successful wells, three were in the onshore Perth Basin, and the Morangie 1 well in the offshore Perth Basin which, although unsuccessful, recorded encouraging residual oil shows.

Origin extended its exploration efforts in the Surat Basin around existing gas fields. A reappraisal of the Myall Creek area resulted in a further five wells drilled in that area, four of which successfully tested gas at commercial rates.

During the year, Origin and Woodside were awarded a near-shore Otway Basin permit VIC/P37(V) and in July 2003 were awarded permit T/34P in Tasmanian waters southwest and adjoining the Thylacine permit. Exploration in VIC/P37 (V), which is operated by Origin, will begin in late 2003, while the work program for T/34P (operated by Woodside) includes the acquisition of 3D seismic survey data in 2004 and the drilling of a well in 2005.

In New Zealand, Origin will participate in the deepening of the gas exploration well at Tuihi. In the Bass Basin, Origin will participate in the drilling of the Trefoil prospect near Yolla.

Retail

	2002/03 $m	2001/02 $m	% Change
EBITDA	232.1	166.8	39
EBIT	143.8	92.0	56
Customers (‘000)	2,010	1,777	13
	Natural Gas*	Electricity	LPG
Revenue (A$m)	841	1,547	417
Gross Margin (A$m)	131	285	114
Sales – (PJ)	123
Sales – (TWh)		15
Sales – (ktonnes)			479
Total Sales (PJe)	123	54	24
Customer # (‘000)	986	851	200+

* Revenue for natural gas is the gross revenue received from customers including the Retained Profit component which terminated in Sept 2002. Gross margin is after payment of Retained Profit.

Revenue from the Retail segment increased 46% to $2.8 billion. EBITDA increased by 39% to $232 million mostly due to the contribution of the CitiPower retail business purchased in July

2002, reductions in electricity purchasing costs due to favourable electricity contracts and pool prices and the cessation of retained profits paid to the Victorian Government.

The CitiPower acquisition, which added 264,000 customers in Melbourne’s CBD and surrounding suburbs, makes Origin the largest energy retailer in Victoria and the second largest nationally.

The integration of the CitiPower business with existing gas and electricity businesses was a major focus for the year. Work will be completed on the integration of billing systems and conversion of customer data in August 2003.

Having common back office systems will help reduce costs, improve the service levels and ability to access customers in competitive markets. While there were cost increases associated with the CitiPower integration and the introduction of FRC, the expanded customer base will deliver reduced cost to serve in the next financial year.

FRC was introduced in Victoria in January 2002 for electricity and October 2002 for natural gas. Churn in the electricity market grew modestly until the introduction of contestability for natural gas, after which there was a spike in activity for both fuels. Churn appears to have stabilised at rates of 5-10% per annum which is in line with industry expectation. FRC for electricity was introduced in South Australia in January 2003, but no official statistics are available for this market.

Overall during financial year ended June 2003 Origin maintained its gas customer numbers and achieved a modest growth in electricity customer numbers. Early losses of mass market customers in the Victorian electricity market due to transfers in progress at the time of the CitiPower acquisition were reversed by gains later in the year in both Victoria and South Australia.

Electricity

Origin supplies electricity predominantly to customers in Victoria, and also participates in competitive markets in New South Wales, Queensland and South Australia.

Electricity revenue increased by over $700 million and gross margins increased by over $125 million to $285 million largely due to the CitiPower retail acquisition in July 2002.

The Victorian Government continues to cap prices for mass market customers and in January 2003 rejected proposed tariff increases for electricity supplied to customers in the former Powercor area and implemented a 4% tariff reduction for customers in the former CitiPower area.

Notwithstanding these caps Origin is rebalancing individual tariff categories to cover the costs of buying electricity and costs to serve in an increasingly competitive market. This will deliver reduced tariffs to customers who have been receiving competitive market offers while un-profitable segments of the market will continue to have their tariffs adjusted on a gradual basis.

At the wholesale level the industry has undergone a degree of consolidation with the withdrawal of several retail competitors. Despite the consolidation, the National Electricity Market continues to be vigorously competitive. Even with this competitive environment Origin has managed to increase its market share renewing most existing contracts and signing new contracts with major customers in Victoria, New South Wales, South Australia and Queensland.

Electricity purchase costs, while increasing due to the replacement of long-term favourable contracts with current market contracts, benefited from generally low pool price volatility. Origin entered into a number of electricity purchase contracts that enabled Origin to take advantage of low pool prices while maintaining appropriate cover against periods of high pool prices. The combination of these factors meant that Retail profitability was maintained on a unit margin basis and improved overall because of the increased retail and wholesale customer sales volumes.

Natural Gas

Origin supplies natural gas mainly to customers in Victoria, South Australia, Queensland and New South Wales.

Natural gas revenues increased mainly due to the termination of the Gascor Agency Agreement and cessation of retained profit payments to the Victorian Government following the introduction of FRC in the Victorian gas market in October 2002. The profit retained by the State under the Gascor Agency Agreement reduced to $14 million from $29 million in the prior year.

In the mass market the natural gas business benefited from tariff increases of 2.5% in Victoria in January 2002; 6% in South Australia in July 2002; and 6.7% increase in Queensland in March 2002. However as a result of an unsuccessful application for a Victorian tariff increase in January 2003, prices were flat in Victoria during the later half of this year.

Sales volumes were also impacted by mild winter weather in Victoria. The measure of average degree-days, which provides an indication of heating requirements, continued to be well below long-term averages.

The deregulated natural gas market for commercial and industrial customers in South Australia and Queensland is moving into a more challenging phase with the emergence of effective competition. Nationally commercial and industrial sales decreased by 6% to 51 PJ.

LPG

Origin is a retailer and wholesaler of LPG in Australia, New Zealand and the near Pacific.

The LPG business continued the strong performance reported last year despite a reduction in sales volumes of 2% and an increase of 17% in the unit purchase cost of LPG. The Contract Price (CP) - the international benchmark price for LPG - was up by $74 per tonne to $517 per tonne average for the year.

Sales volumes were impacted by the drought, which particularly affected sales to commercial and industrial customers in many parts of rural Australia. Autogas volumes declined in the face of competition from alternative fuels. However these reductions were offset by an improvement in sales to the Pacific Islands.

Operating costs were reduced $2.9 million while a focus on credit management delivered an improved debtor performance compared to the prior year of $4.6 million and contributed to operating cash flow returns in excess of 20%.

Margins were maintained despite the increased costs of LPG, through a favourable change in the mix of sales towards the higher margin customers. As a result gross margins were steady at $114 million.

During the year Origin acquired the Treston Gas business in Shepparton, Victoria. This business, which will continue to operate under the Treston brand name, will deliver additional sales of 12,000 tonnes per annum and provide opportunities for multi fuel offerings to Origin’s electricity and natural gas customer base in the region.

Generation

	2002/03 $m	2001/02 $m	% Change
EBITDA	48.3	30.2	60
EBIT	26.5	15.6	70
	2002/03	2001/02	% Change
Total Sales (TWh)	1.90	1.86	2

The Generation segment recorded a 54% growth in total sales revenue to $97 million. EBITDA rose 60% to $48.3 million. This was largely due to the implementation of a tolling agreement between Origin’s Retail and Generation Divisions and the acquisition of the Mt Stuart Power Station in Townsville Queensland.

Contract Plant

The acquisition of the Mt Stuart Power Station increased the capacity of contracted plant by 86% to 622 MW.

Mt Stuart supplies peaking power to the Queensland Government owned entity, Enertrade, under a long-term power purchase agreement. The plant, commissioned in December 1998, currently runs on kerosene but can be readily converted to natural gas and could be expanded by a further 150 MW through conversion to combined cycle mode.

Origin’s 50% owned cogeneration plants at the Worsley Alumina refinery in Western Australia and the Osborne Cogeneration Plant in South Australia operated at high levels of availability and efficiency.

Availability of the cogeneration plant at BP’s Bulwer Island refinery (50% interest) improved during the year following the implementation of a technical remediation plan to reduce the level of outages experienced in the prior year. During the early part of 2003/04 both gas turbines will be upgraded to full design rating.

Construction of the energy centres at the Toowoomba and Baillie Henderson Hospitals in Queensland proceeded satisfactorily, with the Toowoomba Base Hospital works completed just prior to year-end. The energy centres will deliver electricity, steam and hot and chilled water to each hospital.

Merchant Plant

Origin owns and operates three merchant plants - Roma Power Station in central Queensland, Ladbroke Grove Power Station and Quarantine Power Station in South Australia - all maintained high availability and reliability during the year.

The maturity of the national electricity market has enabled Origin to implement a market based tolling arrangement whereby capacity provided by its electricity merchant plant is charged to Origin’s Retail businesses. This has allowed the stabilisation of Generation income and quarantined the volatility of the electricity spot market to the Retail business where that volatility is managed across Origin’s entire portfolio of electricity purchases and sales.

Renewable Generation

Throughout the year Origin continued to develop a portfolio of renewable energy projects.

This included the acquisition of an option to develop the Troubridge Point wind farm near Edithburgh on the Yorke Peninsula in South Australia, and an option to acquire a 50% interest in the Challicum Hills wind farm in Victoria. Development is also underway for the Kemiss Hill Road wind farm, near Yankalilla in South Australia. Wind monitoring is being conducted on a further two potential wind farm locations.

Origin has also funded research to develop lower cost solar energy. During the year Origin and the Australian National University announced the development of SLIVER® Solar Cell technology which uses one tenth of the silicon used in conventional solar panels while matching power, performance and efficiency.

Testing confirmed that solar panels using this technology could be commercially competitive. An automated approach to module assembly was developed and planning for a pilot production facility is well advanced.

In August 2003 Origin announced the acquisition of a 19% interest in Geodynamics Limited for a consideration of $5 million. The company has been exploring and seeking to develop geothermal sources of energy including the hot dry rock geothermal resource in the Cooper Basin. Under a Power Purchase Agreement, Origin will have the right to purchase 50% of the power generated by Geodynamics’ projects including RECs and environmental credits at a discount to the prevailing market price. The acquisition is subject to approval by shareholders of Geodynamics.

Networks

	2002/03 $m	2001/02 $m	% Change
EBITDA	23.4	22.5	4
EBIT	21.6	19.9	9

The Network segment EBITDA of $23.4 million was 4% higher than the prior year.

Origin increased its holding in Envestra by 17.4 million shares to 19.14% in April 2002. As a consequence distributions received from Envestra increased by $1.2 million.

There was a steady increase in management fees earned from Envestra, reflecting the underlying growth in its business but this was largely offset by changes to other fees.

During the year, total natural gas connections increased by 2.5% to 905,500. This increase was largely driven by the continued strength of the domestic housing market. About 300 km of new mains were laid and 105 km of existing mains replaced.

FRC was introduced for Victorian natural gas customers in October 2002, allowing consumers to change retailers. New Information systems and processes were introduced to ensure cost

efficient metering and billing of consumers serviced by Envestra’s networks in the new competitive environment. Work has commenced on introducing similar systems and processes in South Australia where the natural gas market will open to full competition in 2004.

In a joint venture with United Utilities, Origin won a contract for the management of the water network and treatment assets of Coliban Water in regional Victoria. The 10-year contract commencing 1 July 2003 is a significant win for the joint venturers and will generate more than $120 million in revenue over the contract term.

SEA Gas Pipeline

The SEA Gas Partnership (33.3% Origin, 33.3% International Power, 33.3% TXU) is constructing the SEA Gas Pipeline that will travel 680 km linking Origin’s new gas production interests in Victoria to retail gas markets and growing generation assets in South Australia.

By mid August 2003, 530 km of the pipeline had been completed, and the project remained on budget and on schedule for commercial operation in January 2004.

People, Health, Safety and Environment

Employee numbers increased 5% to 2,857 reflecting the growth in the retail business.

A continued focus on safety performance has assisted in reducing the Lost Time Injury Frequency Rate by 25% from 3.6 to 2.7. Regrettably, an incident at a drilling rig resulted in the death of an employee of a contractor engaged to drill an appraisal well for OCA. The incident will be the subject of a coronial enquiry and investigations into the cause of the incident have not yet been completed.

There were no significant environmental incidents during the year and there were no breaches of significant environmental regulations that relate to the company’s operations.

During the year Origin produced its first Sustainability Report, which provided a detailed report to stakeholders on the company’s social, environmental and economic impacts.

Over the past two years employees with at least 12 months’ service have been able to become Origin shareholders under the Employee Share Plan, in recognition of the financial performance of the company and the achievement of a significantly improved safety record. A further issue under this Plan will be made in recognition of 2002/03 performance. The cost of $2.2 million before tax has been provided for in the current year result.

In October 2002 Origin announced that it would undertake a review of its equity based compensation programs.

This review has been undertaken covering the Executive Option Plan, Employee and Executive Share Plans including an assessment of the impact of proposed changes to the accounting and tax treatment of options.

The review has concluded that the use of equity as part of the company’s remuneration program is an effective means of providing long-term incentives that motivate and reward employees for acting in the best interests of shareholders. The Board acknowledges that the plans are part of a remuneration strategy that must adhere to appropriate corporate governance principles and has concluded that they meet these objectives.

For the Employee Share Plans, the company will purchase all shares on market for distribution to employees under these plans, the cost of which will be treated as an expense.

The Board has concluded that the Executive Option Plan with its existing exercise hurdles and market exercise price meets best practice and is in the interests of shareholders. The plan has been reinstated as part of Origin’s remuneration plan.

The Australian Accounting Standards Board has released an exposure draft (ED108) on how to account for share-based payments, including employee options. The company has not adopted ED108 as there are a number of unresolved issues, and the final form of the AASB and IASB standards may well change from that currently on issue. Accordingly, the reported net profit after tax of $162.0 million does not include any amount for the expensing of options. However, if the draft standard were applied Origin would have reported an expense of $1.8 million in the past year in respect of options issued.

When the accounting standards have been determined and the tax implications are clear, Origin will again review the use of options as the long-term incentive component of executive remuneration.

Further details of the Executive Option Plan and Employee Share Plans will be included in Origin’s 2003 Annual Report.

Outlook

In the year ahead Origin will continue to build upon the performance to date and further develop opportunities for growth.

Performance of the Exploration and Production segment will be boosted by increased oil production from the Perth Basin.

Retail will continue to benefit from cessation of the Gascor retained profit payment and the drive to reduce costs from the integration of recently acquired businesses. As current favourable contracts for the purchase of electricity roll off they are being replaced at competitive prices and the wholesale margin gained in the last financial year is unlikely to be sustained.

The Generation segment will benefit from a full year contribution from the Mt Stuart Power Station and Networks segment earnings will benefit from the Coliban Water contract.

Based on these factors the outlook for the coming year is for Origin to achieve its long-term target for growth in earnings per share of 10-15% per annum.

During the coming year the company will also continue to develop opportunities that provide the basis for growth in the medium term. These include the BassGas Project, Otway Gas Project, SEAGas Pipeline and development of coal seam gas.

In the longer term Origin expects to benefit from new opportunities in its Greenfield exploration portfolio, further investment in power generation and development of opportunities in renewable generation.

Notwithstanding the recent acquisitions and capital expenditure on new projects Origin maintains a conservatively geared balance sheet. This, combined with the company’s strong cash flows, means that Origin is well placed to take advantage of opportunities that continue to arise from the rationalisation and growth that is occurring in the energy sector.

Origin Energy Key Financials

	2002/2003 ($m)			2001/2002 ($m)			% change
Total revenue		3,352			2,429		38
EBITDA		491.3			404.6		21
EBIT		295.3			230.7		28
Profit before tax		246.6			187.9		31
Profit after tax		166.3			133.6		24
Profit after tax and outside equity interests		162.0			128.7		26
Free cash flow		350			256		37
OCAT ratio		15.6	%		13.7	%	14
Capital expenditure		524			403		30
Total assets		3,409			2,958		15
Net debt		732			633		16
Shareholders equity		1,790			1,626		10
Key Ratios
Earnings per share		24.8 cents			20.2 cents		23
Free cash flow(1) per share		53.7 cents			40.1 cents		34
Total dividend per share(2)		10 cents			5 cents		100
Net asset backing per share	$	2.70		$	2.50		8
Net debt to capitalisation		29	%		28	%
Net debt to equity		41	%		39	%
EBIT Interest cover		6.1 times			5.4 times
Return on equity		9.2	%		8.1	%
Segment Analysis (EBITDA) (3)
Exploration & Production		187.6			185.2		1
Retail		232.1			166.8		39
Generation		48.3			30.2		60
Networks		23.4			22.5		4

(1) Cash flow available for funding growth and distributions to shareholders

(2) Final dividend 5 cents per share (franked to 2 cents), interim dividend 5 cents per share (franked to 2 cents)

(3) The Corporate segment reported in previous results announcements has now been allocated across the four operational business segments

Item 4.

[GRAPHIC APPEARS HERE]

ASX APPENDIX 4E

FINAL REPORT

For the year ended 30 June 2003

Origin Energy Limited and its Controlled Entities

ABN 30 000 051 696

Results for announcement to the market:

					A$’000
Revenues from ordinary activities	up	38.0	%	to	3,352,303
Profit from ordinary activites after tax attributable to members	up	25.9	%	to	161,952
Net profit for the period attributable to members	up	25.9	%	to	161,952
Earnings per share - Basic	up	22.8	%	to	24.8 cents
Earnings per share - Diluted	up	22.9	%	to	24.7 cents

Dividends	Amount per security	Franked amount per security at 30% tax
Final dividend declared subsequent to 30 June 2003	5 cents	2 cents
Previous corresponding period	3 cents	3 cents
Date for determining entitlements to the dividend		19 September 2003

Brief explanation of any of the figures reported above or other item(s) of importance not previously released to the market:

Nil

Discussion and Analysis of the results for the year ended 30 June 2003

Refer to the Directors’ Review for commentary.

STATEMENT OF FINANCIAL PERFORMANCE

Origin Energy Limited and Controlled Entities

		Consolidated		Consolidated
for year ended 30 June	Note	2003 A$’000		2002 A$’000
Revenue from ordinary activities	3	3,352,303		2,428,808
Expenses from ordinary activities excluding borrowing costs	3	(3,068,179	)	(2,204,790	)
Borrowing costs		(50,138	)	(44,476	)
Share of net profits of associates and joint venture entities accounted for using the equity method	12	12,565		8,338
Profit from ordinary activities before related income tax expense		246,551		187,880
Income tax expense relating to ordinary activities	4	80,248		54,280
Net profit		166,303		133,600
Net profit attributable to outside equity interests		4,351		4,940
Net profit attributable to members of the parent entity, Origin Energy Limited	10	161,952		128,660
Non-owner transaction changes in equity
Net decrease in retained profits on initial adoption of revised AASB 1028 “Employee Benefits”		(283	)	—
Net exchange difference relating to self-sustaining foreign operations		(1,779	)	(1,444	)
Total revenues, expenses and valuation adjustments attributable to members of Origin Energy Limited recognised directly in equity		(2,062	)	(1,444	)
Total changes in equity from non-owner related transactions attributable to members of the parent entity, Origin Energy Limited	10	159,890		127,216
Basic earnings per share	9	24.8	¢	20.2	¢
Diluted earnings per share	9	24.7	¢	20.1	¢

The Statement of Financial Performance should be read in conjunction with the notes to the financial statements set out on pages 5 to 19.

STATEMENT OF FINANCIAL POSITION

Origin Energy Limited and Controlled Entities

		Consolidated	Consolidated
as at 30 June	Note	2003 A$’000	2002 A$’000
CURRENT ASSETS
Cash assets		16,431	17,255
Receivables		621,085	485,538
Inventories		53,913	46,392
Other		43,063	37,064
TOTAL CURRENT ASSETS		734,492	586,249
NON-CURRENT ASSETS
Receivables		31,675	21,499
Investments accounted for using the equity method		55,272	53,347
Other financial assets		170,713	196,135
Property, plant and equipment		1,352,527	1,155,372
Exploration, evaluation and development expenditure		154,300	130,655
Intangible assets		777,948	634,436
Deferred tax assets		123,192	171,654
Other		8,622	8,587
TOTAL NON-CURRENT ASSETS		2,674,249	2,371,685
TOTAL ASSETS		3,408,741	2,957,934
CURRENT LIABILITIES
Payables		475,026	371,534
Interest-bearing liabilities		85,522	85,238
Current tax liabilities		546	3,290
Provisions		71,330	67,451
TOTAL CURRENT LIABILITIES		632,424	527,513
NON-CURRENT LIABILITIES
Payables		11,840	6,100
Interest-bearing liabilities		663,012	565,139
Deferred tax liabilities		243,904	197,055
Provisions		67,957	36,088
TOTAL NON-CURRENT LIABILITIES		986,713	804,382
TOTAL LIABILITIES		1,619,137	1,331,895
NET ASSETS		1,789,604	1,626,039
EQUITY
Contributed equity	7	418,612	385,039
Reserves		110,764	112,347
Retained profits	10	1,223,977	1,095,158
Total parent entity interest		1,753,353	1,592,544
Outside equity interests		36,251	33,495
TOTAL EQUITY	10	1,789,604	1,626,039

The Statement of Financial Position should be read in conjunction with the notes to the financial statements set out on pages 5 to 19.

Net Tangible Asset Backing

		Consolidated 2003			Consolidated 2002
Net tangible asset backing per ordinary security		$	1.48		$	1.48

STATEMENT OF CASH FLOWS

Origin Energy Limited and Controlled Entities

		Consolidated		Consolidated
for year ended 30 June	Note	2003 A$’000		2002 A$’000
CASH FLOWS FROM OPERATING ACTIVITIES
Cash receipts in the course of operations		3,703,004		2,553,539
Cash payments in the course of operations		(3,193,463	)	(2,155,062	)
Dividends/distributions received from associates/joint venture entities		10,998		6,000
Other dividends received		413		409
Interest received		1,832		1,785
Borrowing costs		(50,571	)	(44,919	)
Income taxes paid		(39,619	)	(22,455	)
Subvention payments		(10,000	)	(18,000	)
Net cash provided by operating activities		422,594		321,297
CASH FLOWS FROM INVESTING ACTIVITIES
Payments for purchases of property, plant and equipment		(146,776	)	(169,464	)
Payments for exploration, development and mine properties		(132,454	)	(135,379	)
Proceeds from sale of non-current assets		3,494		18,613
Payments for purchases of investments		(459	)	(15,904	)
Payments for purchases of businesses	6(C)	(131,614	)	—
Payments for purchases of controlled entities	6(C)	(93,107	)	(87,452	)
Net cash used in investing activities		(500,916	)	(389,586	)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from borrowings		1,092,626		385,591
Repayment of borrowings		(987,675	)	(485,000	)
Dividends paid		(25,858	)	(35,282	)
Proceeds from issue of securities	7	5,417		198,465
Net cash provided by financing activities		84,510		63,774
NET INCREASE / (DECREASE) IN CASH HELD		6,188		(4,515	)
Cash and cash equivalents at the beginning of the year		10,551		15,910
Effect of exchange rate changes on cash		(308	)	(844	)
CASH AND CASH EQUIVALENTS AT THE END OF THE YEAR	6(A)	16,431		10,551

The Statement of Cash Flows should be read in conjunction with the notes to the financial statements set out on pages 5 to 19.

NOTES TO THE FINANCIAL INFORMATION

Origin Energy Limited and Controlled Entities

FOR THE YEAR ENDED 30 JUNE 2003

1. BASIS OF PREPARATION OF THE FINAL REPORT

The ASX 4E Report has been prepared in accordance with Accounting Standard AASB 1039 “Concise Financial Reports” (excluding the discussion and analysis requirements of the standard) and applicable Urgent Issues Group Consensus Views. It has been prepared on the basis of historical costs and, except where stated, does not take into account changing money values or current valuations of non-current assets. The accounting policies have been consistently applied by each entity in the consolidated entity and, except where there is a change in an accounting policy, are consistent with those of the previous year.

Changes in accounting policy

PROVISIONS & CONTINGENT LIABILITIES - The consolidated entity has applied AASB 1044 “Provisions, Contingent Liabilities and Contingent Assets” for the first time from 1 July 2002. Dividends are now recognised at the time they are declared, determined or publicly recommended. Previously, final dividends were recognised in the financial year to which they related, despite the dividends being announced after the end of that financial year. The adjustments to the consolidated financial report as at 1 July 2002 as a result of this change were an increase of $19,435,000 in opening retained profits (refer note 10) and a corresponding reduction in the provision for the dividend reported in current provisions at the beginning of the current financial year. Had the new accounting policy been applied in the previous financial year, the provision for dividend of $19,435,000 would have been nil.

EMPLOYEE BENEFITS - The consolidated entity has applied the revised AASB 1028 “Employee Benefits” for the first time from 1 July 2002. The liability for wages and salaries, annual leave and sick leave is now calculated using the remuneration rates the company expects to pay as at each reporting date, not wage and salary rates current at reporting date. The initial adjustments to the consolidated financial report as at 1 July 2002 as a result of this change were an increase of $404,000 in provision for employee benefits, a decrease of $283,000 in opening retained profits, and an increase of $121,000 in future income tax benefit.

FOREIGN CURRENCY TRANSLATION: The consolidated entity has applied the revised AASB1012 “Foreign Currency Translation” for the first time from 1 July 2002. For hedges of specific purchases or sales, the costs (or gains) of entering the hedge and the unrealised exchange differences up to the date of the specific purchase or sale are now deferred and recognised as assets or liabilities on the statement of financial position from the inception of the hedge contract, not when the specific purchase or sale occurs. As a result of this change in accounting policy, payables and receivables were increased by $15,843,000 representing deferred foreign currency hedge exchange gains and a net hedge receivable as at 30 June 2003.

Origin Energy Limited and Controlled Entities

2. SEGMENTS

(a) Primary Reporting - Business Segments

	Exploration andProduction				Retail		Generation			Networks		Consolidated
	2003 A$’000		2002 A$’000		2003 A$’000	2002 A$’000	2003 A$’000		2002 A$’000	2003 A$’000	2002 A$’000	2003 A$’000		2002 A$’000
REVENUE
Total Sales	330,302		304,736		2,836,474	1,937,770	97,308		63,174	149,270	125,382	3,413,354		2,431,062
Intersegment Sales Elimination **	(43,989	)	(41,884	)	—	—	(42,816	)	—	—	—	(86,805	)	(41,884	)
External Sales Revenue	286,313		262,852		2,836,474	1,937,770	54,492		63,174	149,270	125,382	3,326,549		2,389,178
Other Revenue	1,534		24,116		4,681	1,172	1,667		2	14,490	12,037	22,372		37,327
Total Segment Revenue	287,847		286,968		2,841,155	1,938,942	56,159		63,176	163,760	137,419	3,348,921		2,426,505
Unallocated Revenue												3,382		2,303
Revenue from Ordinary Activities												3,352,303		2,428,808
RESULT
Segment Result	103,272		103,209		142,123	91,341	15,677		7,904	21,632	19,892	282,704		222,346
Share of Net Profits of Associates and Joint Venture Entities	—		—		1,694	686	10,871		7,652	—	—	12,565		8,338
EARNINGS BEFORE INTEREST AND TAX (EBIT)	103,272		103,209		143,817	92,027	26,548		15,556	21,632	19,892	295,269		230,684
Net Interest Expense												(48,718	)	(42,804	)
Profit from Ordinary Activities Before Income Tax												246,551		187,880
Income Tax Expense												(80,248	)	(54,280	)
Net Profit												166,303		133,600
EARNINGS BEFORE INTEREST, TAX, DEPRECIATION AND AMORTISATION (EBITDA)	187,565		185,180		232,055	166,755	48,258		30,202	23,448	22,473	491,326		404,610
DEPRECIATION AND AMORTISATION	84,293		81,971		88,238	74,728	21,710		14,646	1,816	2,581	196,057		173,926
OTHER NON-CASH EXPENSES	23,600		15,501		10,270	18,494	694		1,122	963	3,059	35,527		38,176
ACQUISITIONS OF NON-CURRENT ASSETS (includes capital expenditure)	253,604		184,632		169,628	86,308	100,579		116,312	538	15,932	524,349		403,184

Origin Energy Limited and Controlled Entities

2. SEGMENTS (continued)

	Exploration and Production		Retail		Generation		Networks		Consolidated
	2003 A$’000	2002 A$’000	2003 A$’000	2002 A$’000	2003 A$’000	2002 A$’000	2003 A$’000	2002 A$’000	2003 A$’000	2002 A$’000
ASSETS
Segment Assets	1,081,787	886,348	1,633,050	1,405,555	309,183	232,894	189,826	190,881	3,213,846	2,715,678
Equity accounted investments	—	—	5,966	4,265	48,956	49,082	350	—	55,272	53,347
Total Segment Assets	1,081,787	886,348	1,639,016	1,409,820	358,139	281,976	190,176	190,881	3,269,118	2,769,025
Unallocated Assets *									139,623	188,909
Total Assets									3,408,741	2,957,934
LIABILITIES
Segment Liabilities	110,284	82,681	464,108	349,912	12,298	10,086	39,463	38,494	626,153	481,173
Unallocated Liabilities *									992,984	850,722
Total Liabilities									1,619,137	1,331,895

* Unallocated assets consists of cash and deferred tax assets. Unallocated liabilities consists of current and non-current interest bearing liabilities and current and deferred tax liabilities.

** Intersegment pricing is determined on an arm’s length basis. Intersegment sales are eliminated on consolidation. With effect from 1 July 2002, a tolling arrangement was put in place between Retail and Generation in relation to the consolidated entity’s three merchant power stations. The tolling arrangement pricing is at commercial rates. The external revenue from the merchant power stations is now recognised in Retail’s revenue while Generation receives a tolling fee from Retail for the capacity provided and costs incurred by these power stations. Comparative amounts for 2002 have not been restated.

Corporate costs are allocated across business segments on the basis of external sales revenue.

Industry Segments: Products and Services: Exploration and Production Natural gas and oil Retail Natural gas, electricity, LPG, energy related products and services Generation Natural gas-fired cogeneration and power generation Networks Infrastructure investment and management services

(b) Secondary Reporting - Geographical Segments

The consolidated entity operates predominantly in Australia. More than 90% of revenue, profit, assets and acquisition of non-current assets relate to operations in Australia.

Origin Energy Limited and Controlled Entities

3. PROFIT FROM ORDINARY ACTIVITIES

(a) Revenue from ordinary activities

	Consolidated		Consolidated
	2003 $’000		2002 $’000
Revenue from operating activities:
Revenue from sale of goods	3,176,888		2,263,727
Revenue from rendering of services	149,661		125,451
Total sales revenue	3,326,549		2,389,178
Revenue from outside operating activities	25,754		39,630
Revenue from ordinary activities	3,352,303		2,428,808
(b) Expenses from ordinary activities excluding borrowing costs
Expenses by nature:
Raw materials and consumables used, and changes in finished goods and work in progress	2,263,030		1,535,775
Advertising	18,448		13,190
Bad and doubtful debts	6,760		8,850
Consultancy costs	24,391		8,177
Contracting costs	102,439		88,657
Depreciation and amortisation	196,057		173,926
Employee expenses	206,683		157,495
Exploration and production costs	57,677		48,999
Motor vehicle expenses	15,957		16,259
Occupancy expenses	26,172		20,422
Repairs and maintenance	18,963		17,140
Royalties	26,134		26,978
Administration and other expenses from ordinary activities	105,468		88,922
	3,068,179		2,204,790
Profit before tax/revenue
Profit from ordinary activities before related income tax expense as a percentage of revenue from ordinary activities	7.4	%	7.7	%
Profit after tax/equity interests
Net profit from ordinary activities after tax attributable to members of the parent entity as a percentage of members equity at the end of the period	9.2	%	8.1	%

Origin Energy Limited and Controlled Entities

4. INCOME TAX EXPENSE

	Consolidated		Consolidated
	2003 $’000		2002 $’000
Income tax expense/(benefit) on pre-tax accounting profit:
(i) at Australian tax rate of 30%	73,965		56,363
(ii) adjustment for difference between Australian and overseas tax rates	(7	)	63
Income tax expense on pre-tax accounting profit at standard rates	73,958		56,426
Add/(subtract) tax effect of major items causing permanent differences:
Non-taxable distributions received	(2,649	)	(2,458	)
Depreciation and amortisation	12,615		16,491
Recoupment of capital losses not previously recognised	(918	)	(2,066	)
Share of associates’ net profit	(3,598	)	(2,131	)
Recoupment of tax losses not previously brought to account	(165	)	(527	)
Under/(Over) provision for tax in previous years	733		(981	)
Net benefit of subvention payments	—		(11,301	)
Other	272		827
	6,290		(2,146	)
Income tax expense relating to ordinary activities	80,248		54,280

Origin Energy Limited and Controlled Entities

5. DIVIDENDS

Date the dividend is payable		3 October 2003
Date to determine entitlements to the dividend (ie on the basis of registrable transfers received by 5.00pm if securities are not CHESS approved, or security holding balances established by 5.00pm or such later time permitted by SCH Business Rules if securities are CHESS approved) and the last date for receipt of election notices for the dividend.		19 September 2003
		Consolidated		Consolidated
	Note	2003 $’000		2002 $’000
(a) Dividend Reconciliation
Final prior year dividend under/(over) provided		(1	)	1,818
Interim dividend of 5 cents per share, franked to 2 cents per share at 30% paid 24 March 2003 (2002: 2 cents per share, fully franked at 30%)		32,655		12,950
Nil (2002: Final dividend of 3 cents per share, fully franked at 30% paid 21 October 2002)		—		19,435
	10	32,654		34,203
Restatement adjustment:
Final dividend previously recognised in the year ended 30 June 2002, now recognized in the current financial year as a result of the initial adoption of AASB 1044 “Provisions, Contingent Liabilities and Contingent Assets” (refer note 1).	10	19,435		—
		52,089		34,203
(b) Subsequent Event
Since the end of the financial year, the Directors have declared a final dividend of 5 cents per share, franked to 2 cents per share at 30%, payable 3 October 2003.		32,885		—

The financial effect of this dividend has not been brought to account in the financial statements for the year ended 30

June 2003 and will be recognised in subsequent financial reports.

Origin Energy Limited has no available franking credits.

Origin Energy Limited and Controlled Entities

6. NOTES TO THE STATEMENT OF CASH FLOWS

	Consolidated	Consolidated
	2003 $’000	2002 $’000
(A) Reconciliation of cash and cash equivalents
Cash includes cash on hand, at bank and short term deposits at call, net of outstanding bank overdrafts.
Cash as at the end of the financial period as shown in the Statement of Cash Flows is reconciled to the related items in the Statement of Financial Position as follows:
Cash	16,431	17,255
Bank overdrafts	—	(6,704	)
	16,431	10,551
(B) The following non cash financing and investing activities have not been included in the Statement of Cash Flows:
Issue of shares in respect of the Dividend Reinvestment Plan	28,156	8,117

Origin Energy Limited and Controlled Entities

6. NOTES TO THE STATEMENT OF CASH FLOWS (continued)

of $225 million (30 June 2002: $87 million). The total assets and liabilities acquired are as follows:

	Consolidated	Consolidated
as at 30 June	2003 $’000	2002 $’000
CURRENT ASSETS
Receivables	133,327	7,168
Inventories	3,470	5,663
Other	3,377	14,573
TOTAL CURRENT ASSETS	140,174	27,404
NON-CURRENT ASSETS
Receivables	363	—
Property, plant and equipment	93,011	70,572
Deferred tax assets	15,258	229
TOTAL NON-CURRENT ASSETS	108,632	70,801
TOTAL ASSETS	248,806	98,205
CURRENT LIABILITIES
Payables	99,906	7,129
Provisions	37,183	1,623
TOTAL CURRENT LIABILITIES	137,089	8,752
NON-CURRENT LIABILITIES
Deferred tax liabilities	—	1,282
Provisions	36,305	719
TOTAL NON-CURRENT LIABILITIES	36,305	2,001
TOTAL LIABILITIES	173,394	10,753
NET ASSETS	75,412	87,452
Goodwill on acquisition	149,309	—
CONSIDERATION	224,721	87,452

Origin Energy Limited and Controlled Entities

7. CONTRIBUTED EQUITY

		Consolidated	Consolidated
	Note	2003 $’000	2002 $’000
ISSUED AND PAID-UP CAPITAL
657,709,751 (2002: 647,829,152) ordinary shares, fully paid		418,612	385,039
ORDINARY SHARE CAPITAL
Balance at the beginning of the financial year		385,039	178,457
Shares issued:
- 2,333,300 (2002: 761,650) shares in accordance with the Senior Executive Option Plan		5,417	1,570
- 7,547,299 (2002: 2,693,165) shares in accordance with the Dividend Reinvestment Plan		28,156	8,117
- Nil (2002: 44,196,526) shares in accordance with the Share Placement		—	123,332
- Nil (2002: 26,500,287) shares in accordance with the Share Purchase Plan		—	73,563
- Nil (2002: 629,145) shares in accordance with the Employee Share Plan		—	—
Total movements in ordinary share capital	10	33,573	206,582
		418,612	385,039

Terms and conditions

Holders of ordinary shares are entitled to receive dividends as declared from time to time and are entitled to one vote per share at

shareholders’ meetings. In the event of winding up of the company, ordinary shareholders rank after creditors, and are fully entitled

to any proceeds of liquidation.

Origin Energy Limited and Controlled Entities

8. ISSUED AND QUOTED SECURITIES AT 30 JUNE 2003

Category of securities	Number issued	Number quoted
Ordinary securities	657,709,751	657,709,751
Changes during year ended 30 June 2003 Increases through issues in accordance with:
(a) the Dividend Reinvestment Plan	3,062,208	3,062,208
	4,485,091	4,485,091
	7,547,299	7,547,299
(b) the Senior Executive Option Plan (refer Exercised details below)	2,333,300	2,333,300
	9,880,599	9,880,599

Options	Number	Exercise price		Expiry date
On issue at 30 June 2003	365,000	$	1.66	4 Dec 2003
	50,000	$	1.50	4 Dec 2003
	30,000	$	1.66	19 Jan 2004
	1,250,000	$	2.24	1 Feb 2004
	881,500	$	1.76	6 Dec 2004
	55,500	$	1.78	6 Dec 2004
	2,230,000	$	1.27	1 Mar 2005
	495,000	$	2.74	31 Aug 2006
	3,495,000	$	3.20	16 Dec 2006
	30,000	$	3.20	14 Jan 2007
	2,630,000	$	3.56	19 Dec 2007
Issued during year ended 30 June 2003	2,630,000	$	3.56	19 Dec 2007
Exercised during year ended 30 June 2003	1,125,000	$	2.92	11 Dec 2002
	280,000	$	1.66	4 Dec 2003
	30,000	$	2.92	2 Mar 2003
	30,000	$	1.66	19 Jan 2004
	784,400	$	1.76	6 Dec 2004
	83,900	$	1.78	6 Dec 2004
Expired during year ended 30 June 2003	35,000	$	2.92	11 Dec 2002
	70,000	$	5.02	11 Dec 2002

Origin Energy Limited and Controlled Entities

9. EARNINGS PER SHARE (EPS)

	Consolidated	Consolidated
	2003 cents	2002 cents
Details of basic and diluted EPS reported separately in accordance with paragraph 9 and 18 of AASB 1027 “Earnings Per Share” are as follows.
Basic EPS	24.8 cents	20.2 cents
Diluted EPS	24.7 cents	20.1 cents
Weighted average number of shares used as the denominator
	2003 Number	2002 Number
Number for basic earnings per share
Ordinary Shares	652,380,401	637,291,869
Number for diluted earnings per share
Ordinary Shares	652,380,401	637,291,869
Effect of executive share options on issue	4,061,388	2,996,168
	656,441,739	640,288,037
Reconciliation of earnings used in calculating EPS:
	2003 $’000	2002 $’000
Basic and diluted EPS
Net profit	166,303	133,600
Less: Outside equity interests	4,351	4,940
Amount used as numerator in calculating basic and diluted EPS	161,952	128,660

Information concerning the classification of securities

(a) Fully paid ordinary shares

Fully paid ordinary shares are classified as ordinary shares for the purposes of calculating basic and diluted earnings

per share.

(b) Share Options

Share options granted under the Senior Executive Option Plan have been classified as potential ordinary shares and

have been included in the determination of diluted earnings per share. The options have not been included in the

determination of basic earnings per share.

Origin Energy Limited and Controlled Entities

10. RETAINED PROFITS AND TOTAL EQUITY

		Consolidated		Consolidated
	Note	2003 $’000		2002 $’000
Retained profits reconciliation
Previously reported retained profits at the end of the previous financial year		1,095,158		999,223
Adjustment resulting from initial adoption of revised AASB 1028 “Employee Benefits”		(283	)	—
Adjustment to dividends resulting from initial adoption of revised AASB 1044 “Provisions, Contingent Liabilities and Contingent Assets”		19,435		—
Restated retained profits at the beginnng of the financial year		1,114,310		999,223
Dividends recognised in the current year as a result of the initial adoption of AASB 1044 “Provisions, Contingent Liabiities and Contingent Assets”	5	(19,435	)	—
Current year dividend paid during the year	5	(32,654	)	(34,203	)
Net profit attributable to members of the parent entity, Origin Energy Limited		161,952		128,660
Aggregate of amounts transferred (to)/from reserves		(196	)	1,478
Retained profits at the end of the financial year		1,223,977		1,095,158
Total equity reconciliation
Total equity at the beginning of the financial year		1,626,039		1,328,372
Total changes in parent entity interest in equity recognised in the Statement of Financial Performance		159,890		127,216
Transactions with owners as owners:
Contributions of equity	7	33,573		206,582
Dividends recognised during the year	5	(32,654	)	(34,203	)
Total changes in outside equity interests		2,756		(1,928	)
Total equity at the end of the financial year		1,789,604		1,626,039

Origin Energy Limited and Controlled Entities

11. CONTROL GAINED OVER ENTITIES HAVING MATERIAL EFFECT

Name of entity		AES Australia Holding BV AES Mt Stuart BV AES Mt Stuart General Partnership
Consolidated operating profit and extraordinary items after tax of the entity since the date in the current period on which control was acquired		$762,000
Date from which such profit has been calculated		13 December 2002

Origin Energy Limited and Controlled Entities

12. INTERESTS IN ENTITIES WHICH ARE NOT CONTROLLED ENTITIES

	Percentage of ownershipinterest held at the endof the period				Contribution to net profit
	Consolidated2003 %		Consolidated2002%		Consolidated2003$’000	Consolidated2002$’000
Equity accounted associates andjoint venture entities:
BIEP Pty Ltd	33.3		33.3		—	—
BIEP Security Pty Ltd	33.3		33.3		—	—
Bulwer Island Energy Partnership	50.0		50.0		5,244	5,073
Campaspe Asset Management Services Pty Ltd	50.0		—		—	—
CUBE Pty Ltd*	50.0		50.0		5,627	2,579
Gas Industry Superannuation Pty Ltd	50.0		50.0		—	—
Rockgas Ltd	50.0		50.0		1,694	686
SEA Gas Partnership	50.0		50.0		—	—
Vitalgas Pty Limited	50.0		50.0		—	—
WEBE Pty Ltd	50.0		50.0		—	—
Total					12,565	8,338
Other material interests:
Envestra Limited	19.1	%	19.1	%	12,821	11,591
Total					12,821	11,591

* Osborne Cogeneration Pty Ltd, a company incorporated in SA, is a wholly-owned controlled entity of CUBE Pty Ltd.

Origin Energy Limited and Controlled Entities

13. CONTINGENT LIABILITIES

Details of contingent liabilities and contingent assets where the probability of future payments/receipts is not considered remote are set out below, as well as details of contingent liabilities and contingent assets, which although considered remote, the Directors consider should be disclosed. The Directors are of the opinion that provisions are not required in respect of these matters, as it is not probable that a future sacrifice of economic benefits will be required or the amount is not capable of reliable measurement.

	Consolidated	Consolidated
	2003$’000	2002$’000
Contingent liabilities not considered remote:
Unsecured:
Bank guarantees	169,811	99,566

Origin Energy Limited has given to its bankers letters of responsibility in respect of accommodation provided from time to time by the banks to Origin Energy Limited’s wholly or partly owned controlled entities.

Warranties and indemnities have been given by entities in the consolidated entity in relation to environmental liabilities for certain properties as part of the terms and conditions of divestments.

A number of sites within the consolidated entity have been identified as contaminated, all of which are subject to ongoing environmental management programmes to ensure appropriate controls are in place and clean-up requirements are implemented. For sites where the requirements can be assessed and costs estimated, the estimated cost of remediation has been expensed or provided for. The contamination has generally resulted from prior activities conducted at the sites.

Certain entities within the consolidated entity are subject to various lawsuits and claims, including claims for additional income tax, stamp duty and penalties, native title claims and a cross-claim arising from an action brought against Esso/BHP in relation to the Longford explosion in 1998. Any liabilities arising from such lawsuits and claims are not expected to have a material adverse effect on the consolidated financial statements.

A Demerger Deed was entered into in the 2000 year containing certain indemnities and other agreements between Origin Energy Limited and Boral Limited and their respective controlled entities covering the transfer of the businesses, investments, debt and assets of Boral Limited and some temporary shared arrangements.

14. EVENTS SUBSEQUENT TO BALANCE DATE

Dividends declared subsequent to 30 June 2003

Refer Note 5.

Oil Company of Australia Limited

~~On 11 July 2003~~ Origin ~~announced~~Energy ~~an off-market cash offer to acquire all the ordinary shares in Oil Company of Australia~~ Limited ~~(“OCA”)~~ABN ~~that it does not already own. At~~ 30 ~~June~~000 ~~2003~~051 ~~Origin~~696 ~~held~~· ~~85.23%~~Level of39, ~~the~~AMP ~~issued~~Centre, ~~capital of OCA. If~~50 ~~successful,~~Bridge ~~the~~Street ~~anticipated~~Sydney ~~purchase~~NSW ~~price~~2000 ~~of the remaining OCA shares is expected to be approximately $74 million.~~

~~The~~GPO ~~financial~~Box ~~effects~~5376, ofSydney ~~the~~NSW ~~above~~2001 ~~transactions~~· ~~have~~Telephone ~~not~~(02) ~~been~~9220 ~~brought~~6400 to· ~~account~~Facsimile in(02) ~~the~~9235 ~~financial~~1661 ~~report~~· ~~for the year ended 30 June 2003~~www.originenergy.com.au

19Form 604

Annual Meeting
The annual meeting will be held as follows:
Place		Wesley Conference Centre
		220 Pitt Street
		Sydney NSW 2000
Date		16 October 2003
Time		10:30am
Approximate date the annual report will be available		16 September 2003

Corporations Act 2001

~~Compliance statement~~Section 671B

1Notice ~~This~~of ~~report~~change ~~has~~of ~~been~~interests ~~prepared in accordance with Accounting Standard AASB 1039 “Concise Financial Reports” (excluding the discussion and analysis requirements~~ of ~~the~~substantial ~~standard) and applicable Urgent Issues Group Consensus Views.~~holder

2To ~~This report and the accounts upon which the report is based, use the same accounting policies.~~Company Name/Scheme Oil Company of Australia Limited

3ACN/ARSN 001 ~~This report does give a true and fair view of the matters disclosed.~~646 331

41. ~~This~~Details ~~report is based on accounts to which one~~ of ~~the~~substantial ~~following applies.~~

þholder ~~The~~(1) accounts have been audited. ¨ The accounts have been subject to review. ¨ The accounts are in the process of being audited or subject to review. ¨ The accounts have not yet been audited or reviewed.

5Name Origin Energy Limited and the other bodies corporate as set out in Annexure ~~The audit report is attached.~~A (“Origin”)

6ACN/ARSN ~~The~~(if applicable) 000 ~~entity has a formally constituted audit committee.~~051 696

Sign here:		Date:	20 August 2003
	(Company secretary)
Print name:	W M Hundy

There was a change in the

20interests of the substantial The dates set out in paragraph 3

~~Item~~holder 5.on

To	Company Announcements Office	Facsimile	1300 300 021
Company	Australian Stock Exchange Limited	Date	20 August 2003
From	Bill Hundy	Pages	21
Subject	Results Announcement Year Ended 30 June 2003 - Presentation

The previous notice was given to the

~~This~~company ~~Transmittal~~on 15 / is07 / ~~confidential.~~2003 ~~If you have received this document in error, please contact Origin Energy immediately.~~

~~Please~~The ~~find~~previous ~~attached~~notice awas ~~presentation~~dated 15 / ~~to be given to the Media and Financial Markets today regarding Origin Energy’s Results for the Full Year Ended 30 June 2003.~~07 / 2003

2. Previous and present voting power

The total number of votes attached to all the voting shares in the company or voting interests in the scheme that the substantial holder or an associate (2) had a relevant interest (3) in when last required, and when now required, to give a substantial holding notice to the company or scheme, are as follows:

Class of securities (4)	Previous notice			Present notice
Class of securities (4)	Person’s votes	Voting power (5)		Person’s votes	Voting powers (5)
ORD	103,124,169	87.69	%	103,439,157	87.96	%

3. Changes in relevant interests

Particulars of each change in, or change in the nature of, a relevant interest of the substantial holder or an associate in voting securities of the company or scheme, since the substantial holder was last required to give a substantial holding notice to the company or scheme are as follows:

Date of change

Person whose
relevant interest
changed

Nature of

change (6)

Consideration

given in relation to
change (7)

Class and

number of securities

affected

Person’s votes
affected

15/7/2003	BTS Pty Limited	Acquisitions of a relevant interest as a result of purchases of ordinary shares through on-market transactions on ASX	$4.22 per share	ORD 15,000	15,000
16/7/2003	BTS Pty Limited	Acquisitions of a relevant interest as a result of purchases of ordinary shares through on-market transactions on ASX	$4.23 per share	ORD 3,300	3,300
17/7/2003	BTS Pty Limited	Acquisitions of a relevant interest as a result of purchases of ordinary shares through on-market transactions on ASX	$4.23 per share	ORD 9,043	9,043
21/7/2003	BTS Pty Limited	Acquisitions of a relevant interest as a result of purchases of ordinary shares through on-market transactions on ASX	$4.23 per share	ORD 37,200	37,200
25/7/2003	BTS Pty Limited	Acquisitions of a relevant interest as a result of purchases of ordinary shares through on-market transactions on ASX	$4.23 per share	ORD 3,240	3,240

28/7/2003	BTS Pty Limited	Acquisitions of a relevant interest as a result of purchases of ordinary shares through on-market transactions on ASX	$4.23 per share	ORD 67,000	67,000
29/7/2003	BTS Pty Limited	Acquisitions of a relevant interest as a result of purchases of ordinary shares through on-market transactions on ASX	$4.23 per share	ORD 25,000	25,000
30/7/2003	BTS Pty Limited	Acquisitions of a relevant interest as a result of purchases of ordinary shares through on-market transactions on ASX	$4.23 per share	ORD 40,000	40,000
31/7/2003	BTS Pty Limited	Acquisitions of a relevant interest as a result of purchases of ordinary shares through on-market transactions on ASX	$4.23 per share	ORD 43,981	43,981
4/8/2003	BTS Pty Limited	Acquisitions of a relevant interest as a result of purchases of ordinary shares through on-market transactions on ASX	$4.23 per share	ORD 4,300	4,300

5/8/2003

BTS Pty Limited

Acquisitions of a relevant interest as a result of purchases of ordinary shares through on-market transactions on ASX

$4.23 per share

ORD 66,924

66,924

4. Present relevant interests

Particulars of each relevant interest of the substantial holder in voting securities after the change are as follows:

Holder of relevant interest	Registered holder of securities	Person entitled to be registered as holder (8)	Nature of relevant interest (6)	Class and number of securities	Person’s votes
Origin Energy Limited	Origin Energy Limited	Origin Energy Limited	Holder of securities	73,182,977	73,182,977
Origin Energy Holdings Limited	Origin Energy Holdings Limited	Origin Energy Holdings Limited	Holder of securities	27,037,712	27,037,712
Origin Energy Limited	Origin Energy Resources Limited	Origin Energy Limited	Beneficial Holder of securities	1,160	1,160
Origin Energy Retail Limited	Origin Energy Retail Limited	Origin Energy Retail Limited	Holder of securities	1,160	1,160
Origin Energy Limited	Origin Energy Services Limited	Origin Energy Limited	Beneficial Holder of Securities	1,160	1,160
Origin Energy Limited	Santos Facilities Pty Limited	Santos Facilities Pty Limited	Pursuant to Section 608(8) of the Corporations Act as a result of the Agreement attached as Annexure B to Origin’s Form 604 dated 15 July 2003	2,900,000	2,900,000
BTS Pty Limited	BTS Pty Limited or those persons from whom BTS Pty Limited purchased the shares through on-market transactions on ASX	BTS Pty Limited	Beneficial Owner	314,988	314,988

5. Changes in association

The persons who have become associates (2) of, ceased to be associates of, or have changed the nature of their association (9) with, the substantial holder in relation to voting interests in the company or scheme are as follows:

Name and CAN/ARSN

(if applicable)

Nature of association

N/A

6. Addresses

The addresses of persons named in this form are as follows:

Name		Address
Origin Energy Limited		Level 39, AMP Centre, 50 Bridge Street, Sydney, NSW 2000
Bodies corporate set out in Annexure A		See Annexure A


Signature

print name	William M Hundy	capacity Secretary


sign here		date 7/ 8 / 2003

DIRECTIONS

(1)

If there are a number of substantial holders with similar or related relevant interests (eg. a corporation and its related corporations, or the manager and trustee of an equity trust), the names could be included in an annexure to the form. If the relevant interests of a group of persons are essentially similar, they may be referred to throughout the form as a specifically named group if the membership of each group, with the names and addresses of members is clearly set out in paragraph 7 of the form.

(2)

See the definition of “associate” in section 9 of the Corporations Act 2001.

(3)

See the definition of “relevant interest” in sections 608 and 671B(7) of the Corporations Act 2001.

(4)

The voting shares of a company constitute one class unless divided into separate classes.

(5)

The person’s votes divided by the total votes in the body corporate or scheme multiplied by 100.

(6)

Include details of:

(a)

any relevant agreement or other circumstances by which the relevant interest was acquired. If subsection 671B(4) applies, a copy of any document setting out the terms of any relevant agreement, and a statement by the person giving full and accurate details of any contract, scheme or arrangement, must accompany this form, together with a written statement certifying this contract, scheme or arrangement; and

(b)

any qualification of the power of a person to exercise, control the exercise of, or influence the exercise of, the voting powers or disposal of the securities to which the relevant interest relates (indicating clearly the particular securities to which the qualification applies).

See the definition of “relevant agreement” in section 9 of the Corporations Act 2001.

(7)

Details of the consideration must include any and all benefits, money and other, that any person from whom a relevant interest was acquired has, or may, become entitled to receive in relation to that acquisition. Details must be included even if the benefit is conditional on the happening or not of a contingency. Details must be included of any benefit paid on behalf of the substantial holder or its associate in relation to the acquisitions, even if they are not paid directly to the person from whom the relevant interest was acquired.

(8)

If the substantial holder is unable to determine the identity of the person ( eg. if the relevant interest arises because of an option) write “unknown”.

(9)

Give details, if appropriate, of the present association and any change in that association since the last substantial holding notice.

ANNEXURE A

This is Annexure A of 4 pages referred to in Form 604 signed by me and dated 7 August 2003.


Signed:
Dated:		7 August 2003

The following is a list of the related bodies corporate of Origin Energy Limited:

Entity		Address
Amadeus United States Pty Ltd		Level 2, South Tower, John Oxley Centre, 339 Coronation Drive, Milton QLD 4064

Angari Pty Ltd		Level 1, North Tower, John Oxley Centre, 339 Coronation Drive, Milton QLD 4064

BESP Pty Ltd		Level 6, 1 King William Street, Adelaide SA 5000

BTS Pty Limited		Level 6, 1 King William Street, Adelaide SA 5000

FRL Pty Limited		Level 6, 1 King William Street, Adelaide SA 5000

Gasmart (Vic) Pty Ltd		Level 6, 1 King William Street, Adelaide SA 5000

Huddart Parker Limited		Level 6, 1 King William Street, Adelaide SA 5000

Hylemit Pty Limited		78 Wyndham Street, Shepparton VIC 3630

OCA (CSG) Pty Limited		Level 1, North Tower, John Oxley Centre, 339 Coronation Drive, Milton QLD 4064

OCA (Durham) Pty Limited		Level 1, North Tower, John Oxley Centre, 339 Coronation Drive, Milton QLD 4064

OCA Holdings Pty Limited		Level 1, North Tower, John Oxley Centre 339 Coronation Drive, Milton QLD 4064

OE JV Co Pty Ltd		Level 39, 50 Bridge Street, Sydney NSW 2000

OE SEA Gas Holdings Pty Ltd		Level 39, 50 Bridge Street, Sydney NSW 2000

OE SEA Gas SPV2 Pty Ltd		Level 39, 50 Bridge Street, Sydney NSW 2000

OE SEA Gas SPV3 Pty Ltd		Level 39, 50 Bridge Street, Sydney NSW 2000

Oil Company of Australia (Moura) Pty Ltd		Level 1, North Tower, John Oxley Centre, 339 Coronation Drive, Milton QLD 4064

Oil Company of Australia (Moura) Transmissions Pty Ltd		Level 1, North Tower, John Oxley Centre, 339 Coronation Drive, Milton QLD 4064

Oil Company of Australia Ltd		Level 1, North Tower, John Oxley Centre, 339 Coronation Drive, Milton QLD 4064

Oil Investments Ltd		Level 1, North Tower, John Oxley Centre, 339 Coronation Drive, Milton QLD 4064

Origin (LGC) (Aust) Pty Ltd		Level 6, 1 King William Street, Adelaide SA 5000

Origin Energy (Vic) Pty Ltd		Level 6, 1 King William Street, Adelaide SA 5000

Origin Energy Amadeus NL		Level 2, South Tower, John Oxley Centre, 339 Coronation Drive, Milton QLD 4064

Origin Energy American Samoa Inc		Nu’uuli, American Samoa

Origin Energy Asset Management Ltd		Level 6, 1 King William Street, Adelaide SA 5000

Origin Energy Asset Management Services Pty Ltd		Level 39, 50 Bridge Street, Sydney NSW 2000

Origin Energy Australia Holding BV		Level 39, 50 Bridge Street, Sydney NSW 2000

Origin Energy Bonaparte Pty Ltd		Level 2, South Tower, John Oxley Centre, 339 Coronation Drive, Milton QLD 4064

Origin Energy Contracting Limited		Level 6, 1 King William Street, Adelaide SA 5000

Origin Energy Cook Islands Ltd		Avarua, Rarotonga, Cook Islands

Origin Energy Developments Pty Ltd		Level 2, South Tower, John Oxley Centre, 339 Coronation Drive, Milton QLD 4064

Origin Energy Electricity Limited		Level 6, 1 King William Street, Adelaide SA 5000

Origin Energy Finance Company Pty Limited		Level 39, 50 Bridge Street, Sydney NSW2000

Origin Energy Holdings Limited		Level 6, 1 King William Street, Adelaide SA 5000

Origin Energy Industries Limited		12 Waione Street, Petone, Wellington New Zealand

Origin Energy LPG Limited		Level 6, 1 King William Street, Adelaide SA 5000

Origin Energy Ltd		Level 39 AMP Centre, 50 Bridge Street, Sydney NSW 2000

Origin Energy Mt Stuart BV		Level 39, 50 Bridge Street, Sydney NSW 2000

Origin Energy Northwest Ltd		Level 2, South Tower, John Oxley Centre, 339 Coronation Drive, Milton QLD 4064

Origin Energy NZ Share Plan Limited		12 Waione Street, Petone, New Zealand

Origin Energy Petroleum Pty Ltd		Level 2, South Tower, John Oxley Centre, 339 Coronation Drive, Milton QLD 4064

Origin Energy Pipelines (Vic) Holdings Pty Ltd		Level 6, 1 King William Street, Adelaide SA 5000

Origin Energy Pipelines (Vic) Pty Ltd		Level 6, 1 King William Street, Adelaide SA 5000

Origin Energy Pipelines Pty Limited		Level 6, 1 King William Street, Adelaide SA 5000

Origin Energy PNG Ltd		Napa Napa Road, Kanudi, Port Moresby

Origin Energy Power Ltd		Level 6, 1 King William Street, Adelaide SA 5000

Origin Energy Resources Ltd		Level 2, South Tower, John Oxley Centre, 339 Coronation Drive, Milton QLD 4064

Origin Energy Resources NZ Ltd		12 Waione Street, Petone, Wellington, New Zealand

Origin Energy Retail Ltd		Level 6, 1 King William Street, Adelaide SA 5000

Origin Energy SA Pty Limited		Level 6, 1 King William Street, Adelaide SA 5000

Origin Energy Samoa Ltd		Sogi, Samoa

Origin Energy Services Limited		Level 6, 1 King William Street, Adelaide SA 5000

Origin Energy Solar Pty Limited		Level 39, 50 Bridge Street, Sydney NSW 2000

Origin Energy Solomons Ltd		Mendana Avenue, Honiara, Solomon Islands

Origin Energy SWC Limited		Level 18, 1 Spring Street, Melbourne VIC 3000

Origin Energy Tasmania Limited		Level 6, 1 King William Street, Adelaide SA 5000

Origin Energy Vanuatu Ltd		Rue Pasteur, Port Vila, Vanuatu

Origin Energy WA Pty Ltd		Level 6, 1 King William Street, Adelaide SA 5000

Origin Energy Water Management Pty Ltd		Level 39, 50 Bridge Street, Sydney NSW 2000

Origin Energy Zoca 91-08 Pty Ltd		Level 2, South Tower, John Oxley Centre, 339 Coronation Drive, Milton QLD 4064


Parbond Pty Limited		Level 39, 50 Bridge Street, Sydney NSW 2000

Sagasco Amadeus Pty Ltd		Level 2, South Tower, John Oxley Centre, 339 Coronation Drive, Milton QLD 4064

Sagasco NT Pty Ltd		Level 2, South Tower, John Oxley Centre, 339 Coronation Drive, Milton QLD 4064

Sagasco Southeast Inc		Level 2, South Tower, John Oxley Centre, 339 Coronation Drive, Milton QLD 4064

The Albury Gas Company Limited		Level 6, 1 King William Street, Adelaide SA 5000

The Fiji Gas Co. Ltd		Cnr Amra Street & Foster Road, Walu Bay, Suva Fiji

Tonga Gas Ltd		Cnr Amra Street & Foster Road, Walu Bay, Suva Fiji

Vic Gas Distribution Pty Ltd		Level 6, 1 King William Street, Adelaide SA 5000

LOGO

Item 3

To	Company Announcements Office	Facsimile	1300 300 021

Company	Australian Stock Exchange Limited	Date	8 August 2003

From	Bill Hundy	Pages	2

Subject	NOTICE OF DATE FOR DETERMINING HOLDERS OF SECURITIES

In accordance with section 633(4) of the Corporations Act, we attach a notice from Origin Energy Limited setting the date for determining the persons to whom information is to be sent under items 6 and 12 of section 633(1) of the Corporations Act.

Regards

Bill Hundy

Company Secretary

~~Item~~02 69220 6467 – bill.hundy@originenergy.com.au

~~[GRAPHIC~~Origin ~~APPEARS~~Energy ~~HERE]~~Limited ABN 30 000 051 696 · Level 39, AMP Centre, 50 Bridge Street Sydney NSW 2000

~~Outline~~GPO Box 5376, Sydney NSW 2001 · Telephone (02) 9220 6400 · Facsimile (02) 9235 1661 · www.originenergy.com.au

LOGO

•CORPORATIONS ~~Performance~~ACT ~~Highlights~~

•SECTION ~~Financial~~633(4) ~~Review~~

•NOTICE ~~Operational~~OF ~~Review~~DATE FOR DETERMINING HOLDERS OF SECURITIES

•Company ~~Outlook~~Announcements Office

~~Unless~~Australian ~~otherwise~~Stock ~~stated,~~Exchange ~~all~~Limited ~~comparative data are in relation to the prior corresponding period, the financial year ended 30 June, 2002.~~

~~[LOGO]~~Exchange Centre

220 Bridge Street

~~[GRAPHIC~~SYDNEY ~~APPEARS~~NSW ~~HERE]~~ 2000

~~Financial~~Take ~~highlights~~notice that, in relation to the takeover bid by Origin Energy Limited ABN 30 000 051 696 for all of the ordinary shares in Oil Company of Australia Limited, the date for determining the persons to whom information is to be sent under items 6 and 12 of section 633(1) of the Corporations Act is 10am (Sydney time) on 12 August 2003.

• Total Revenue	$	3.4 billion		up 38	%
• EBITDA	$	491 million		up 21	%
• PAT	$	162 million		up 26	%
• Basic EPS		24.8	¢	up 23	%
• Free Cash Flow (FCF)	$	350 million		up 37	%
• FCF per share		53.7	¢	up 34	%
• Capex (incl.acquisitions)	$	524 million		up 30	%
• Net Debt / Capitalisation		29	%	up from 28	%
• OCAT / Funds Employed		15.6	%	up from 13.6	%
• Total dividends per share (franked to 4 cents)		10 cents		up 100	%

Dated the 8th day of August 2003

~~[LOGO]~~ Bruce Beeren

4 Director

~~Operating~~Origin ~~highlights~~Energy Limited

•Origin ~~Higher~~Energy Limited ~~contributions~~ABN ~~from~~30 ~~retail~~000 ~~following~~051 ~~acquisition~~696 of· ~~CitiPower~~Level 39, ~~favourable~~AMP ~~wholesale~~Centre, ~~position~~50 ~~and~~Bridge ~~cessation~~Street ofSydney ~~Gascor~~NSW ~~agency~~2000 ~~payments~~

•GPO ~~Generation~~Box ~~result~~5376, ~~boosted~~Sydney byNSW Mt2001 ~~Stuart~~· ~~acquisition~~Telephone (02) 9220 6400 · Facsimile (02) 9235 1661 · www.originenergy.com.au

•ASX ~~Net~~Release ~~oil production from the Perth Basin exceeds 500,000 barrels to date - strong profit contribution~~

LOGO

•Item ~~New~~4 ~~gas contracts for Cooper Basin and CSG assets~~

•14 ~~Steady~~August ~~progress~~2003 ~~on major development projects~~

•Hovea ~~Development~~8 ofProgress ~~renewables~~Report ~~portfolio~~and Jingemia 2 Update, Onshore Perth Basin, Western Australia

•Hovea ~~Improvements~~8 ~~in working capital and billing~~

•Origin ~~Offer~~Energy ofResources ~~$4.25~~Limited* ~~per~~advises ~~share~~that ~~for~~the ~~minority~~Hovea ~~interests~~8 development well operated by ARC Energy NL and located in ~~OCA~~the onshore Perth Basin Production Licence L1 has been completed for production.

•Operations ~~LTIFR~~since ~~improved~~the last report have been to drill a largely horizontal section in the Dongara Sandstone reservoir from 3the casing shoe to a point 158 metres to the north-northeast of the reservoir entry point.6 The well has been completed for production and briefly flowed to 2clean-up the open-hole section.7 ~~injuries/million~~The ~~hrs~~well ~~worked~~is now shut-in to allow the drilling rig to be moved, a process expected to take approximately one week.

~~[LOGO]~~Forward Program

5Once the well operations at Hovea 8 are complete, the rig will be released to the EP413 joint venture for the Jingemia 2 appraisal well.

~~[GRAPHIC~~Jingemia ~~APPEARS~~2 ~~HERE]~~

~~Profit~~The &oil ~~Loss~~production phase of the Jingemia 1 Extended Production Test (EPT) was completed on 3 August having produced over 125,000 barrels of oil with no water at flow rates ranging from a constrained 1000 barrels of oil per day to in excess of 1850 barrels of oil per day. Jingemia 1 is now shut-in to enable further reservoir pressure measurements to be taken and the Jingemia 2 well to be drilled.

	Jun 03($m)		Jun 02($m)		% change
Total Revenue	3,352.3		2,428.8		38	%
EBITDA	491.3		404.6		21	%
EBIT	295.3		230.7		28	%
Net interest expense	(48.7	)	(42.8	)	14	%
Tax expense	(80.2	)	(54.3	)	48	%
Outside equity interests	(4.4	)	(4.9	)	(12	)%
PAT	162.0		128.7		26	%
Earnings per share (cents)	24.8	¢	20.2	¢	23	%
Free cash flow p s (cents)	53.7	¢	40.1	¢	34	%
ROE	9.2	%	8.1	%	14	%

The Jingemia 2 appraisal well will be drilled from the Jingemia 1 production facility at high angle to target the Dongara Sandstone oil reservoir approximately 1 kilometre southeast of the Jingemia 1 discovery well. The well is being located to intersect the edge of the Jingemia Field as currently mapped. The aim of the well is to better define the field oil water contact, give greater confidence to field reserves and provide a point for water injection into the reservoir to provide pressure support.

~~[LOGO]~~Following the drilling of Jingemia 2, subject to the results of the well and obtaining required Government approvals, it is likely that a further extended production test will be required to optimise field development planning.

7Jingemia 2 will be operated by Origin and is expected to spud on or about 24 August.

~~Gascor~~Origin ~~agency~~Energy ~~payments~~Limited ABN 30 000 051 696 · Level 39, AMP Centre, 50 Bridge Street Sydney NSW 2000

	Jun 03 ($m)	Jun 02 ($m)
Origin reported revenue	3,352	2,429
Retained by Gascor	61	147
Embedded Revenue	3,413	2,576
Group EBIT as reported	295	231
Profit Retained by Gascor	14	29
~ EBIT if Ret. Profit included	309	260

GPO Box 5376, Sydney NSW 2001 · Telephone (02) 9220 6400 · Facsimile (02) 9235 1661 · www.originenergy.com.au

•Participants ~~The~~in ~~agency~~L1 ~~agreement~~and ~~ended~~L2 in(excluding ~~October~~the ~~2002~~Dongara, Mondarra and noYardarino ~~further~~fields) ~~agency~~and ~~payments~~Hovea ~~will~~8 beare ~~made~~as follows:

[LOGO]

Origin Energy Developments Pty Limited*	50.00	%
Arc Energy NL (Operator)	50.00	%

Participants in EP 413 and Jingemia 2 are as follows:

Origin Energy Developments Pty Limited* (Operator)	49.189	%
Hardman Oil and Gas Pty Ltd	22.376	%
AWE (Perth Basin) Pty Ltd	15.245	%
Victoria Petroleum NL	5.000	%
Voyager Energy Limited	6.270	%
Norwest Energy NL	1.278	%
Roc Oil (WA) Pty Limited	0.250	%
ARC Energy NL	0.250	%
John Kevin Geary	0.142	%

8*a wholly owned subsidiary of Origin Energy Limited

~~Group~~For ~~EBITDA~~further upinformation ~~21%~~contact: ~~on strong Retail performance and contribution from Mt Stuart......~~

Segments*	Jun 03($m)	Jun 02($m)	% change
Exploration & Production	187.6	185.2	1	%
Retail	232.1	166.8	39	%
Generation	48.3	30.2	60	%
Networks	23.4	22.5	4	%
Total	491.4	404.6	21	%

John Piper

~~......while~~Executive ~~Generation~~General ~~segment~~Manager ~~has benefited~~– ~~from~~Oil ~~tolling~~and ~~arrangement~~Gas ~~with~~Production ~~Retail~~

*Phone: ~~The~~07 ~~Corporate~~3858 ~~Segment~~0681 ~~reported in previous results announcements has now been allocated across the four operational business segments~~

~~[LOGO]~~Email: john.piper@upstream.originenergy.com.au

9Origin Energy Limited ABN 30 000 051 696 · Level 39, AMP Centre, 50 Bridge Street Sydney NSW 2000

~~Depreciation~~GPO &Box ~~Amortisation~~5376, ~~expense increased~~Sydney ~~13%~~NSW to2001 ~~$196~~· ~~million~~Telephone ~~reflecting~~(02) ~~new~~9220 ~~capital~~6400 · ~~expenditure~~Facsimile (02) 9235 1661 · www.originenergy.com.~~....~~au

LOGO

	Jun 03 ($m)	Jun 02 ($m)
Buildings, plant & equipment	84.8	79.5
Producing fields	46.5	44.5
Electricity hedging contracts	22.2	25.9
Licences and Goodwill	32.3	20.4
Retail Systems for FRC	8.7	2.1
Other	1.6	1.5
Total	196.1	173.9

Item 5

......and increased amortisation of intangibles and retail systems

Company Announcements Office

Facsimile

1300 300 021

Company

Australian Stock Exchange Limited

Date

18 August 2003

From

Bill Hundy

Pages

Subject

APPENDIX 3B NOTICE

~~[LOGO]~~Please find attached an Appendix 3B regarding the exercise of options under the Senior Executive Option Plan.

Profit & Loss

	Jun 03($m)		Jun 02($m)		% change
Total Revenue	3,352.3		2,428.8		38	%
EBITDA	491.3		404.6		21	%
EBIT	295.3		230.7		28	%
Net interest expense	(48.7	)	(42.8	)	14	%
Tax expense	(80.2	)	(54.3	)	48	%
Outside equity interests	(4.4	)	(4.9	)	(12	)%
PAT	162.0		128.7		26	%
Earnings per share (cents)	24.8	¢	20.2	¢	23	%
Free cash flow p s (cents)	53.7	¢	40.1	¢	34	%
ROE	9.2	%	8.1	%	14	%

[LOGO]

Funding & Interest

	Jun 03		Jun 02		% change
Net debt ($m)	732		633		16	%
Total equity ($m)	1,790		1,626		10	%
Net debt to equity (%)	41	%	39	%	5	%
Debt to (debt + equity) (%)	29	%	28	%	4	%
Net interest expense ($m)	48.7		42.8		14	%
Net interest cover (x EBIT)	6.1		5.4		12	%
Average interest rate (%)	6.7	%	6.6	%	2	%

• Completed US$250 million US Private Placement debt issuance over 7 to 15 years with all proceeds hedged to Australian dollars and used to repay shorter term facilities

• Additional committed facilities in excess of $300 million are immediately available

[LOGO]

Tax reconciliation

	Jun 03($m)		Jun 02($m)
Profit before tax	246.6		187.9
Prima facie tax	74.0		56.4
add non-deductible amortisation	12.6		16.5
less tax loss benefit	0.0		(11.3	)
less tax free income	(6.2	)	(4.6	)
less other permanent differences	(0.2	)	(2.7	)
equals Tax expense	80.2		54.3
Tax paid*	(39.6	)	(22.5	)
Subvention payments +	(10.0	)	(18.0	)

* $36 million expected to be refunded in December half 2003

+ Final subvention payments of $4 million will be made by December 2003

[LOGO]

The OCAT ratio improved largely due to immediate cash flow from acquisitions

	Jun 03 ($m)		Jun 02($m)
EBITDA	491		405
Non-cash items (net)	13		(17	)
Change in Working Capital	39		16
Stay in business Capex (net)	(94	)	(65	)
Tax/Subvention Payments	(50	)	(40	)
OCAT	399		299
Net Interest Paid	(49	)	(43	)
Free cash flow	350		256
Funds Employed	2,465		2,189
OCAT Ratio	15.6	%	13.7	%

[LOGO]

Capital expenditure increased on the back of higher SIB and significant acquisitions

	Jun 03 ($m)	Jun 02($m)
Stay in business	97.1	64.9
Growth
Exploration & Production	128.8	74.3
Retail	19.2	69.8
Generation	3.7	46.0
Networks	0.0	0.1
Total capital expenditure	248.8	255.2
Acquisitions	275.6	148.0
Capex including acquisitions	524.3	403.2

• SIB capex increase mostly due to higher Cooper Basin expenditure

• Acquisitions included CitiPower ($132 m), Mt Stuart Power Station ($89 million), and CSG assets ($50 million)

[LOGO]

OCFR for the E&P segment is lower due to high up-front capex on development projects ............

	FundsEmployed($m)	OperatingCash flow($m)	OCFRJun 03(%)		OCFRJun 02(%)
Exploration & Production	888	126	14.2	%	16.7	%
Retail	1,117	243	21.8	%	16.4	%
Generation	309	50	16.1	%	10.7	%
Networks	152	26	17.1	%	16.8	%

.......while Retail and Generation have benefited from immediate cash-flow associated with acquisitions

[LOGO]

Origin has steadily grown returns per share

[GRAPHIC APPEARS HERE]

• Free cash flow per share up 34% reflecting the strong contribution of the Retail business and Mt Stuart

• EPS is up 23%

• A final dividend per share of 5¢ (franked to 2¢) brings total dividend per share to 10¢ (franked to 4¢)

• Dividend payout ratio of 40% is consistent with Board guidance in October 2002

Origin continues to achieve EPS growth in excess of the long term goal of 10 - 15% pa

* Free Cash Flow (as calculated on slide 14) per share

[LOGO]

[GRAPHIC APPEARS HERE]

E&P: EBITDA reflects steady gas production while oil from the Perth Basin makes initial contribution

[GRAPHIC APPEARS HERE]

* Includes acquisitions ¨

• Perth Basin oil offsets sale of Bodalla assets and decline in oil production

• 2P reserves increased by 433PJe to 1,573 PJe net of production of 84 PJe

• Major contracts signed for Cooper Basin and CSG

• Capital Expenditure significantly higher due to developments in Perth Basin, CSG and Bass/Otway

• Origin has made a bid for minority shareholdings in OCA of $4.25 per share, to close on 22 September

• New Otway Basin acreage Perth and Surat Basin follow-up provide exploration upside

[LOGO]

Oil production from the Perth Basin has reversed the decline in liquids production of the last few years

[GRAPHIC APPEARS HERE]

• Bodalla assets sold in FY ’02 for $16 million

• $24 million invested in the Perth Basin in FY ’03 has replaced the declining Eromanga fields with a new producing province

• Perth Basin fields producing in excess of 3,000 bopd Origin net, targeting 5,000 bopd net in calendar 2004

Average Oil Price Realised
FY ’02		A$ 42.37
FY ‘03		A$ 46.06

[LOGO]

Net 2P reserves increase of 433 PJe (5 times production) positions Origin to address gas market opportunities

[GRAPHIC APPEARS HERE]

Proved and Probable Reserves (PJe*)
2P reserves at 30 June, 2002		1,140
plus Exploration success		82
plus Otway reserves upgrade		232
plus CSG acquisition (July ’02)		164
plus revisions & adjustments		39
less production		84
2P reserves at 30 June, 2003		1,573

• Will book significant additional reserves in September upon completion of Durham field CSG appraisal program

• Provisioning and write-downs in FY’03 was $16.6 million

• Exploration carrying values in Greenfields areas without imminent production now only $21 million.

* PJE - petajoule equivalent - a measure of energy

[LOGO]

Origin and OCA have continued to progress the commercialisation of CSG resources...........

[GRAPHIC APPEARS HERE]

• July ’02 - increased equity in the Fairview (24%) and Durham (89%-99%) fields

• Dec ’02 - Origin/OCA agreement with AGL to supply 340 PJ of gas over 13 years

• Gas supply agreement with AMC unlikely to proceed

• Expenditure of $89 million (incl. acquisitions) during FY ’03 is expected to increase to around $100 million during FY ’04

• Myall Creek stratigraphic trap in the Surat Basin provides encouraging new play to complement Bowen Basin CSG

..........while exploration success at Myall Creek has added upside to the Surat Basin

[LOGO]

Significant progress has continued to be made in the Otway and Bass Basins

BassGas Project (37.5%)		Otway Gas Project (29.75%)
• Final Government & JV approval given		• Reserves in the Thylacine and Geographe fields now booked as 2P (298 PJe)
• Construction commenced in January 2003 - now 45% complete		• 3-phase development agreed by the JV parties
• Total cost around $450 million to provide 20 PJ and over 1 million barrels of liquids per annum gross (Origin share ~$170 million)		• Initial development cost of $750 million to provide 60 PJ/a gross (Origin share ~$220 million)
• Development on schedule and on budget		• EES/EIS submitted and on public exhibtion through July and August ‘03
• First gas in third quarter 2004		• First gas early 2006

[LOGO]

Additional permits have been secured in the Otway Basin in joint venture with Woodside............

[GRAPHIC APPEARS HERE]

• Near-shore permit Vic/P37(V) on trend between Minerva and Port Campbell fields

• Deep-water permit T/34P adjacent to Thylacine field and prospective for both gas and oil

• Exploration programs will be integrated with work on existing permits

• Trefoil exploration well to be drilled in FY’ 04 utilising the rig drilling BassGas development wells

..........to complement and leverage from existing Bass and Otway Basin exploration & development plans

[LOGO]

Oil and gas developments in the Perth Basin have been commercialised with further drilling to come

[GRAPHIC APPEARS HERE]

• Hovea field successfully developed with facilities capable of producing in excess of 5000 bopd

• Long term production tests at Eremia and Jingemia established flow rates of around 1000 and 1800 bopd respectively

• Program of up to 10 wells spanning development, appraisal and exploration planned for FY ’04

• Beharra Springs North and Hovea 2 gas discoveries to be followed up with further gas exploration

[LOGO]

Retail: EBITDA up 39% to $232 million on contributions from CitiPower, favourable wholesale position and cessation of agency payments

[GRAPHIC APPEARS HERE]

+ Includes agency sales in Victoria

* Includes acquisitions ¨

• Retail revenues increase 46% on the back of CitiPower acquisition, the cessation of the Gascor agency agreement, and a full year of 2002 tariff increases

• Additional benefits from significant improvements in working capital and billing, but billing system change-over delayed from June to August ‘03

• FRC fully introduced in Victoria and partially in SA. Churn within industry expectations.

• Achieved milestone of 30,000 green energy customers and market share leadership for grid-connected solar systems

[LOGO]

Retail business: all areas contributed to the result

	Natural Gas *	Electricity	LPG
Revenue (A$m)	841	1,547	417
Gross Margin (A$m)	131	285	114
Sales - (PJ)	123
Sales - (TWh)		15
LPG (Ktonnes)			479
Total Sales (PJe)	123	54	24
Customer # (‘000)	986	851	200+

* Gross revenue received from customers (including Retained Profit component). Gross Margin is after payment of Retained Profit

[LOGO]

The gradual introduction of FRC has produced variable churn data, but annualised rates appear to be stabilising.

[GRAPHIC APPEARS HERE]

Origin Customer Numbers (‘000)	Natural Gas	Electricity
Jun ‘02	986	582
CitiPower	—	264
Jun ‘03	986	851
Change net of acquisition	—	+5

Sources:

Graph: Various websites including Vencorp, Nemmco, Gasmarketco, ESAA, AGA

Table: Company information

Origin’s net position is flat for gas customers and a modest increase in electricity customer numbers

[LOGO]

A well structured portfolio of contracts enabled access to low pool prices whilst maintaining a well covered position

[GRAPHIC APPEARS HERE]

• The pool price is not a good indication of true purchasing costs

• Historic forward curves tend to reflect trends in the rolling annual spot curve

• These historic curves approximate the buying costs of retailers

• Effective management of electricity exposures requires purchase costs to be locked in 6-24 months or more ahead

[LOGO]

LPG margins have been maintained despite increased purchasing costs

[GRAPHIC APPEARS HERE]

• Cost of LPG benchmark CP up $74 per tonne (17%) on previous year

• Pacific volumes up but Australian volumes affected by drought and decline in Autogas sector. Overall volumes down 2%

• Margins were maintained despite these pressures

• Government announcement re the abolition of the “excise free” status of auto LPG unlikely to have a major impact for several years

[LOGO]

Generation: EBITDA up 60% to $48.3 million on contributions from Mt Stuart and tolling agreement with Retail

[GRAPHIC APPEARS HERE]

* Includes acquisitions ¨

# Total Sales Revenue includes inter-segment sales under the tolling agreement with Retail

• Acquired Mt Stuart in December 2002

• Tolling agreement means all plant is contracted with either 3rd parties or Origin Retail

• Significant progress was made in the development of renewable energy projects such as solar, wind and HDR

[LOGO]

Origin continues to add capacity in its Generation business with interests in over 880MW of installed capacity............

Major Origin Power Plants	OriginInt. %	CapacityMwe	Type	Operation	Contracting Party
Osborne	50	180	Cogen	Base	NRG Flinders & Penrice
Worsley	50	120	Cogen	Base	Western Power & Worsley
Bulwer Is.	50	32	Cogen	Base	BP
OneSteel	100	8	Cogen	Base	OneSteel
Mt Stuart	100	288	OCGT	Peak	Enertrade
Quarantine	100	96	OCGT	Peak	Origin Retail
Ladbroke	100	80	OCGT	Base/ Int	Origin Retail
Roma	100	74	OCGT	Peak	Origin Retail

• Increased maturity of the electricity market has enabled Origin to implement a Tolling Agreement to cover Quarantine, Ladbroke and Roma

• Market based structure comprising

- Payments for capacity based on capital invested and fixed costs

- Payments for performance based on availability and running hours

........with all plants now covered by contracts with 3rd parties or Origin Retail

[LOGO]

Origin has established a portfolio of renewable generation projects that provide value in an uncertain environment

[GRAPHIC APPEARS HERE]

• Solar: Origin SLIVER® Solar Cell technology tested and commercial viability established. Planning for pilot plant well advanced

• Wind: Option to acquire 50% equity interest in Challicum Hills and progressed plans for development of the Kemmiss Hill Rd and Troubridge wind farms in SA

• HDR: Origin has taken a 19% stake in Geodynamics at a cost of $5 million and secured arrangements to take up to 50% of the potential output

[LOGO]

Networks: EBITDA up 4% to $23.4 million including higher distributions from Envestra

[GRAPHIC APPEARS HERE]

* excludes acquisitions

• Distributions from Envestra were $1.2 million higher due to increased shareholding

• Steady increase in Management fees offset by changes to other fees earned from Envestra

• More than 25,000 customers added to networks under management, 300 km of new pipe laid and 105 km of mains replaced.

• In JV with United Utilities won a 10 year contract for management of water network & treatment assets of Coliban Water in country Victoria. Revenues of $120 million over ten years expected.

[LOGO]

SEA Gas pipeline: Steady progress made in construction - on budget and on schedule with 530 km laid to mid August

[GRAPHIC APPEARS HERE]

Commissioning scheduled for October 2003 and first commercial gas January 2004

[LOGO]

[GRAPHIC APPEARS HERE]

There are a number of factors influencing the profit outlook for FY ’04.........................

Positives		Negatives
• Increased oil production from the Perth Basin		• Gas production volumes will remain steady prior to additional sales from BassGas and CSG in FY ‘05
• Full integration of the CitiPower business will reduce costs		• Additional costs associated with gradual introduction of FRC in SA
• Compared to prior period no Gascor payments		• Continued Government capping of energy tariffs creates uncertainty in margins
• Full year contribution from Mt Stuart power station		• Lower contribution from electricity purchasing contracts
• SEA Gas pipeline will commence operation in early 2004

....while increased capital expenditure on development projects will continue to drive growth

[LOGO]

This Capital expenditure will be largely covered by cash flows from the business over the next few years

[GRAPHIC APPEARS HERE]

• Committed or highly likely development projects underpin the growth of the company over the next several years

• Current free cash flow will cover the majority of the capital required for this organic growth

• Conservative gearing of 29% and borrowing capacity of over $400 million provide funding flexibility

[LOGO]

Origin maintains the long term goal of achieving EPS growth of 10-15% pa through sound strategy, effective acquisitions and internally generated growth............

[GRAPHIC APPEARS HERE]

• Growth of the retail business has delivered significant value and may now plateau for a period

• A modest decline in E&P has been reversed and major projects will see contributions from this area increase significantly going forward

• Gas generation assets have been added by development and acquisition, and a solid portfolio of renewable energy projects has been aggregated

.........largely funded through cash flow from existing businesses

[LOGO]

[GRAPHIC APPEARS HERE]

Item 7.

To	Company Announcements Office	Facsimile	1300 300 021
Company	Australian Stock Exchange Limited	Date	21 August 2003
From	Bill Hundy	Pages	8
Subject	EXPLORATION AND PRODUCTION PRESENTATION

Please find attached a copy of a presentation that Mr Rob Willink, General Manager, Exploration will deliver to the financial market today.

A copy of this presentation can also be obtained from our website www.originenergy.com.au under the Investor Centre - Presentations section.

Regards

LOGO

Bill Hundy

Company Secretary

~~Item~~02 89220 6467 – bill.hundy@originenergy.com.au

~~[GRAPHIC~~Origin ~~APPEARS~~Energy ~~HERE]~~ Limited ABN 30 000 051 696 · Level 39, AMP Centre, 50 Bridge Street Sydney NSW 2000

~~Otway~~GPO ~~Basin~~Box -5376, ~~Hot~~Sydney ~~Spot~~NSW 12001 · Telephone (02) 9220 6400 · Facsimile (02) 9235 1661 · www.originenergy.com.au

~~[GRAPHIC~~Appendix ~~APPEARS~~3B ~~HERE]~~

•New ~~Following~~issue ~~the~~announcement ~~Thylacine and Geographe gas discoveries the offshore Otway has attracted many new players~~

•Rule ~~Prospectivity~~2.7, ~~centres~~3.10.3, on3.10.4, a3.10.5 ~~reservoir fairway known as the Shipwreck Trough~~

•Appendix ~~Origin~~3B ~~has recently acquired interests in the deep water permit T/34P and the near shore permit Vic/P37(V) - both along this trend~~

~~[LOGO]~~New issue announcement,

2application for quotation of additional securities

~~SCHEMATIC~~and ~~SECTION~~agreement ~~OFFSHORE OTWAY BASIN~~

~~[GRAPHIC~~Information ~~APPEARS~~or ~~HERE]~~documents not available now must be given to ASX as soon as available. Information and documents given to ASX become ASX’s property and may be made public.

~~[LOGO]~~Introduced 1/7/96. Origin: Appendix 5. Amended 1/7/98, 1/9/99, 1/7/2000, 30/9/2001, 11/3/2002.

3Name of entity ORIGIN ENERGY LIMITED

~~Otway~~ABN ~~Basin:~~30 ~~Proposed~~000 ~~activity~~051 ~~2004-2006~~ 696

~~[GRAPHIC~~We ~~APPEARS~~(the ~~HERE]~~entity) give ASX the following information.

•Part ~~Construction~~1 of– ~~the~~All ~~Otway~~issues ~~Gas project will begin with the Thylacine field to be developed first~~

•You ~~Exploration~~must ~~activity~~complete ~~will~~the ~~centre~~relevant ~~around~~sections ~~acquisition~~(attach ofsheets ~~modern~~if 3Dthere ~~seismic~~is ~~data~~not ~~followed~~enough ~~by an active drilling campaign~~space). ~~Origin will participate in at least 4 exploration wells~~

• Meanwhile in the Bass Basin Origin will drill the Trefoil prospect utilising the rig that will also drill the Yolla development wells (next page)

~~[LOGO]~~+ See chapter 19 for defined terms.

411/3/2002

~~[GRAPHIC~~Appendix ~~APPEARS~~3B ~~HERE]~~ Page 20

~~North~~Appendix ~~Perth~~3B ~~Basin – Hot Spot 2~~

~~[GRAPHIC~~New ~~APPEARS~~issue ~~HERE]~~announcement

[LOGO]

4	Do the +securities rank equally in all respects from the date of allotment with an existing +class of quoted +securities? If the additional securities do not rank equally, please state: · the date from which they do · the extent to which they participate for the next dividend, (in the case of a trust, distribution) or interest payment · the extent to which they do not rank equally, other than in relation to the next dividend, distribution or interest payment	Yes

5	Issue price or consideration	$1.76

6	Purpose of the issue (If issued as consideration for the acquisition of assets, clearly identify those assets)	Issued as a result of the exercise of Options issued pursuant to the rules of the Origin Energy Senior Executive Option Plan (previously the Boral Limited Senior Executive Option Plan)

7	Dates of entering +securities into uncertificated holdings or despatch of certificates	14 August 2003

		Number	+Class
8	Number and +class of all +securities quoted on ASX (including the securities in clause 2 if applicable)	657,855,151	Ordinary

6+ See chapter 19 for defined terms.

~~North~~11/3/2002 ~~Perth Basin – Hot Spot 2~~

~~[GRAPHIC~~Appendix ~~APPEARS~~3B ~~HERE]~~Page 21

•Appendix ~~Hovea,~~3B ~~Jingemia, Eremia and Cliff Head discoveries have changed industry perception of region from poorly prospective for gas to highly prospective for both gas and oil~~

•New ~~Current~~issue ~~target~~announcement ~~is for 10,000 bopd gross by end of calendar year (5,000 bopd Origin net)~~

• Onshore discoveries can be rapidly developed to provide early cash flow


			Number	+Class
	9	Number and +class of all +securities not quoted on ASX (including the securities in clause 2 if applicable)	11,366,600	Options

	10	Dividend policy (in the case of a trust, distribution policy) on the increased capital (interests)	All Shares Participate Equally

Part 2 – Bonus issue or pro rata issue

	11	Is security holder approval required?	N/A

	12	Is the issue renounceable or non-renounceable?	N/A

	13	Ratio in which the +securities will be offered	N/A

	14	+Class of +securities to which the offer relates	N/A

	15	+Record date to determine entitlements	N/A

	16	Will holdings on different registers (or subregisters) be aggregated for calculating entitlements?	N/A

	17	Policy for deciding entitlements in relation to fractions	N/A

	18	Names of countries in which the entity has +security holders who will not be sent new issue documents Note: Security holders must be told how their entitlements are to be dealt with. Cross reference: rule 7.7.	N/A

	19	Closing date for receipt of acceptances or renunciations	N/A

	20	Names of any underwriters	N/A

•+ 3DSee ~~seismic~~chapter is19 ~~again~~for ~~providing~~defined ~~new insights into this geologically complex area~~terms.

~~[LOGO]~~11/3/2002

7Appendix 3B Page 22

~~North~~Appendix ~~Perth~~3B ~~Basin~~

~~Schematic~~New ~~Structural~~issue ~~Section~~announcement

[GRAPHIC APPEARS HERE]

21	Amount of any underwriting fee or commission	N/A

22	Names of any brokers to the issue	N/A

23	Fee or commission payable to the broker to the issue	N/A

24	Amount of any handling fee payable to brokers who lodge acceptances or renunciations on behalf of ⁺security holders	N/A

25	If the issue is contingent on ⁺security holders’ approval, the date of the meeting	N/A

26	Date entitlement and acceptance form and prospectus or Product Disclosure Statement will be sent to persons entitled	N/A

27	If the entity has issued options, and the terms entitle option holders to participate on exercise, the date on which notices will be sent to option holders	N/A

28	Date rights trading will begin (if applicable)	N/A

29	Date rights trading will end (if applicable)	N/A

30	How do ⁺security holders sell their entitlements in full through a broker?	N/A

31	How do ⁺security holders sell part of their entitlements through a broker and accept for the balance?	N/A

~~[LOGO]~~+ See chapter 19 for defined terms.

811/3/2002

~~North~~Appendix ~~Basin~~3B -Page 3D23 ~~seismic is identifying prospects not seen on 2D seismic alone~~

~~[GRAPHIC~~Appendix ~~APPEARS HERE]~~3B

9New issue announcement

Perth Basin: Proposed activity 2004-2008

	32	How do +security holders dispose of their entitlements (except by sale through a broker)?	N/A

	33	+Despatch date	N/A

Part 3 – Quotation of securities
You need only complete this section if you are applying for quotation of securities

	34	Type of securities (tick one)

	(a)	Securities described in Part 1

	(b)	All other securities Example: restricted securities at the end of the escrowed period, partly paid securities that become fully paid, employee incentive share securities when restriction ends, securities issued on expiry or conversion of convertible securities

Entities that have ticked box 34(a)

Additional securities forming a new class of securities
(If the additional securities do not form a new class, go to 43)

Tick to indicate you are providing the information or documents

	35	If the +securities are +equity securities, the names of the 20 largest holders of the additional +securities, and the number and percentage of additional +securities held by those holders

	36	If the +securities are +equity securities, a distribution schedule of the additional +securities setting out the number of holders in the categories 1 – 1,000 1,001 – 5,000 5,001 – 10,000 10,001 – 100,000 100,001 and over

	37	A copy of any trust deed for the additional +securities

(now go to 43)

~~[GRAPHIC~~+ ~~APPEARS~~See ~~HERE]~~chapter 19 for defined terms.

•11/3/2002 ~~Increasing use of 3D seismic will result in better prospect delineation~~

•Appendix ~~Integration~~3B ofPage ~~new~~24 ~~geological models should help maintain a high success rate~~

•Appendix ~~Very~~3B ~~active exploration, appraisal and development program proposed~~

•New ~~Western~~issue ~~Australian~~announcement ~~gas market dynamics mean either gas or oil in this area will very valuable~~

[LOGO]

Entities that have ticked box 34(a)

	38	Number of securities for which +quotation is sought

	39	Class of +securities for which quotation is sought

	40	Do the +securities rank equally in all respects from the date of allotment with an existing +class of quoted +securities? If the additional securities do not rank equally, please state: · the date from which they do · the extent to which they participate for the next dividend, (in the case of a trust, distribution) or interest payment · the extent to which they do not rank equally, other than in relation to the next dividend, distribution or interest payment

	41	Reason for request for quotation now Example: In the case of restricted securities, end of restriction period (if issued upon conversion of another security, clearly identify that other security)

			Number	+Class

	42	Number and +class of all +securities quoted on ASX (including the securities in clause 38)

(now go to 43)

10+ See chapter 19 for defined terms.

~~Surat Basin - Hot Spot~~ 11/3/2002

~~[GRAPHIC~~Appendix ~~APPEARS~~3B ~~HERE]~~Page 25

11All entities

~~Schematic~~Fees ~~Cross Section - Surat Basin~~

[GRAPHIC APPEARS HERE]

		43		Payment method (tick one)
				Cheque attached

				Electronic payment made Note: Payment may be made electronically if Appendix 3B is given to ASX electronically at the same time.

				Periodic payment as agreed with the home branch has been arranged Note: Arrangements can be made for employee incentive schemes that involve frequent issues of securities.


Quotation agreement

	1	+Quotation of our additional +securities is in ASX’s absolute discretion. ASX may quote the +securities on any conditions it decides.

	2	We warrant the following to ASX.

		·	The issue of the +securities to be quoted complies with the law and is not for an illegal purpose.

		·	There is no reason why those +securities should not be granted +quotation.

		·	An offer of the ⁺securities for sale within 12 months after their issue will not require disclosure under section 707(3) or section 1012C(6) of the Corporations Act.

			Note: An entity may need to obtain appropriate warranties from subscribers for the securities in order to be able to give this warranty

		·	Section 724 or section 1016E of the Corporations Act does not apply to any applications received by us in relation to any +securities to be quoted and that no-one has any right to return any +securities to be quoted under sections 737, 738 or 1016F of the Corporations Act at the time that we request that the +securities be quoted.

		·	We warrant that if confirmation is required under section 1017F of the Corporations Act in relation to the +securities to be quoted, it has been provided at the time that we request that the +securities be quoted.

		·	If we are a trust, we warrant that no person has the right to return the +securities to be quoted under section 1019B of the Corporations Act at the time that we request that the +securities be quoted.

	3	We will indemnify ASX to the fullest extent permitted by law in respect of any claim, action or expense arising from or connected with any breach of the warranties in this agreement.

	4	We give ASX the information and documents required by this form. If any information or document not available now, will give it to ASX before +quotation of the +securities begins. We acknowledge that ASX is relying on the information and documents. We warrant that they are (will be) true and complete.

~~Surat~~+ ~~Basin~~See -chapter ~~Hot~~19 ~~Spot~~for 3defined terms.

•11/3/2002 ~~Recent successes in the Surat Basin suggest a large gas resource may be stratigraphically trapped at Myall Creek in the Permian Tinowon Fm.~~

•Appendix A3B ~~further~~Page 426 ~~wells will be drilled starting in September, and 3D seismic will be acquired to define the aerial extent of the accumulation~~

• This renewed activity in the Surat Basin complements the CSG assets of Origin/OCA in the Bowen Basin

Sign here:		Date: 18 August 2003

	Company Secretary

Print name:	William M Hundy

~~[GRAPHIC~~+ ~~APPEARS~~See ~~HERE]~~chapter 19 for defined terms.

1311/3/2002

~~New~~Appendix ~~Zealand.......the~~3B ~~next~~Page ~~Hot~~27 ~~Spot?~~

LOGO

~~[GRAPHIC~~Item ~~APPEARS~~6 ~~HERE]~~

• The gap between supply and demand is widening as Maui goes into serious decline

To	Company Announcements Office	Facsimile	1300 300 021

Company	Australian Stock Exchange Limited	Date	21 August 2003

From	Bill Hundy	Pages	2

Subject	ORIGIN ENERGY LIMITED (ORG): TAKEOVER BID FOR OIL COMPANY OF AUSTRALIA LIMITED (OCA)

•In ~~Although~~accordance with item 8 of section 633(1) of the ~~commercial~~Corporations ~~imperative~~Act, attached is a notice from Origin Energy Limited that its bidder’s statement and all offers in relation to ~~find~~its ~~more~~takeover ~~gas~~bid isfor ~~there,~~all of the ~~area~~ordinary isshares ~~technically~~in ~~difficult~~Oil toCompany ~~explore~~of Australia Limited have been sent as required by item 6 of section 633(1) of the Corporations Act.

•Regards ~~Re-entry and deepening of Tuihu-1A is imminent and Origin is currently studying several gazettal areas~~

LOGO

~~[LOGO]~~Bill Hundy

14Company Secretary

02 9220 6467 – bill.hundy@originenergy.com.au

Origin Energy Limited ABN 30 000 051 696 · Level 39, AMP Centre, 50 Bridge Street Sydney NSW 2000

GPO Box 5376, Sydney NSW 2001 · Telephone (02) 9220 6400 · Facsimile (02) 9235 1661 · www.originenergy.com.au

CORPORATIONS ACT 2001

SECTION 633(1)

NOTICE THAT BIDDER’S STATEMENT AND OFFERS HAVE BEEN SENT

Origin Energy Limited (ABN 30 000 051 696) hereby gives notice that its bidder’s statement and offers in relation to its takeover bid for all of the ordinary shares in Oil Company of Australia Limited (ABN 68 001 646 331) have been sent as required by item 6 of subsection 633(1) of the Corporations Act.

The date of the offers is 20 August 2003.

Dated the 21st day of August 2003

LOGO

Bruce Beeren

Director

Origin Energy Limited

Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

~~Origin~~ORIGIN ~~Energy~~ENERGY ~~Limited~~LIMITED By: /s/ WILLIAM HUNDY Name: William Hundy Title: Company Secretary

Date: September 49, 2003

+Class of +securities issued or to be issued

Ordinary Fully Paid Shares

Number of +securities issued or to be issued (if known) or maximum number which may be issued

19,050

Principal terms of the +securities (eg, if options, exercise price and expiry date; if partly paid +securities, the amount outstanding and due dates for payment; if +convertible securities, the conversion price and dates for conversion)

Fully Paid Ordinary Shares

Filing Compare · ORIGIN ENERGY LTD