No definition available.

Name:	tgen_DueToEnergyProductionAgreements
Namespace Prefix:	tgen_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Energy Production Agreements, Percentage Of Excess Cash Flows Above Threshold

No definition available.

Name:	tgen_EnergyProductionAgreementsPercentageOfExcessCashFlowsAboveThreshold
Namespace Prefix:	tgen_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

Energy Production Agreements, Percentage Of Shortfall Of Cash Flows Below Threshold

No definition available.

Name:	tgen_EnergyProductionAgreementsPercentageOfShortfallOfCashFlowsBelowThreshold
Namespace Prefix:	tgen_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Number of Energy Producing Sites Sold

No definition available.

Name:	tgen_NumberofEnergyProducingSitesSold
Namespace Prefix:	tgen_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Number of Sales of Energy Producing Assets

No definition available.

Name:	tgen_NumberofSalesofEnergyProducingAssets
Namespace Prefix:	tgen_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3A
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482099/360-10-50-3A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3A
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482099/360-10-50-3A

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 12
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-12

TECOGEN INC. 10-Q