NuScale Power to Hold Third Quarter 2025 Earnings Conference Call CORVALLIS, Ore. – NuScale Power Corporation (NYSE: SMR), the industry-leading provider of proprietary and innovative advanced small modular reactor nuclear technology, today announced it will host a conference call to review third quarter 2025 results on Thursday, November 6, 2025, at 5:00 p.m. ET. The conference call may be accessed by dialing (888) 550-5460 with conference ID 4347254 or by visiting the Quarterly Results page of the company’s website. A replay of the webcast will be available for 30 days. About NuScale Power Founded in 2007, NuScale Power Corporation (NYSE: SMR) is the industry-leading provider of proprietary and innovative advanced small modular reactor (SMR) nuclear technology, with a mission to help power the global energy transition by delivering safe, scalable, and reliable carbon-free energy. The NuScale Power Module™, the company’s groundbreaking SMR technology, is a small, safe, pressurized water reactor that can each generate 77 megawatts of electricity (MWe) or 250 megawatts thermal (gross), and can be scaled to meet customer needs through an array of flexible configurations up to 924 MWe (12 modules) of output. As the first and only SMR to have its designs certified by the U.S. Nuclear Regulatory Commission, NuScale is well-positioned to serve diverse customers across the world by supplying nuclear energy for electrical generation, data centers, district heating, desalination, commercial-scale hydrogen production, and other process heat applications. To learn more, visit NuScale Power’s website or follow us on LinkedIn, Facebook, Instagram, X and YouTube. Forward Looking Statements This release may contain forward-looking statements (including without limitation statements containing words such as "will," "believes," "expects," “anticipates,” "plans" or other similar expressions). These forward-looking statements include statements relating to strategic and operational plans, capital deployment, future growth, new awards, backlog, earnings and the outlook for the Company’s business. Actual results may differ materially as a result of a number of factors, including, among other things, the Company’s liquidity and ability to raise capital; the Company’s use of assumptions and estimates in modeling the financial impact of the Partnership Milestones Agreement (“PMA”); NuScale’s ability to make payments under the PMA, and the timing thereof; the Company's ability to make payments under the guaranty agreement related to the PMA, and the timing thereof; the Company's failure to receive new contract awards; cost overruns, project delays or other problems arising from project execution activities, including the failure to meet cost and schedule estimates; intense competition in the industries in which we operate; failure of our partners to perform their obligations; cyber-security breaches; foreign economic and political uncertainties; client cancellations of, or scope adjustments to, existing contracts; failure to maintain safe worksites and international security risks; risks or uncertainties associated with events outside of our control, including weather conditions, pandemics (including COVID-19),

public health crises, political crises or other catastrophic events; the use of estimates and assumptions in preparing our financial statements; client delays or defaults in making payments; the failure of our suppliers, subcontractors and other third parties to adequately perform services under our contracts; uncertainties, restrictions and regulations impacting our government contracts; the inability to hire and retain qualified personnel; the potential impact of certain tax matters; possible information technology interruptions; the Company's ability to secure appropriate insurance; liabilities associated with the performance of nuclear services; foreign currency risks; the loss of one or a few clients that account for a significant portion of the Company's revenues; damage to our reputation; failure to adequately protect intellectual property rights; asset impairments; climate change and related environmental issues; increasing scrutiny with respect to sustainability practices; the availability of credit and restrictions imposed by credit facilities for our clients, suppliers, subcontractors or other partners; failure to obtain favorable results in existing or future litigation and regulatory proceedings, dispute resolution proceedings or claims, including claims for additional costs; failure by us or our employees, agents or partners to comply with laws; new or changing legal requirements, including those relating to environmental, health and safety matters; failure to successfully implement our strategic and operational initiatives and restrictions on possible transactions imposed by our charter documents and Delaware law. Caution must be exercised in relying on these and other forward-looking statements. Due to known and unknown risks, the Company’s results may differ materially from its expectations and projections. Additional information concerning these and other factors can be found in the Company's public periodic filings with the Securities and Exchange Commission (the “SEC”), including the general economic conditions and other risks, uncertainties and factors set forth in the section entitled “Cautionary Note Regarding Forward-Looking Statements” and “Summary of Risk Factors” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024 and in subsequent filings with the SEC. The referenced SEC filings are available either publicly or upon request from NuScale's Investor Relations Department at ir@nuscalepower.com. The Company disclaims any intent or obligation other than as required by law to update the forward- looking statements. Investor Contact Rodney McMahan, Senior Director, Investor Relations, NuScale Power ir@nuscalepower.com Media Contact Chuck Goodnight, Vice President, Business Development, NuScale Power media@nuscalepower.com

NUSCALE POWER Corp 8-K