NuScale Power to Host Analyst Day on October 6, 2023 PORTLAND, 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 an Analyst Day on Friday, October 6, 2023, from 8:00 a.m. to 12:00 p.m. ET at the New York Stock Exchange. President and Chief Executive Officer John Hopkins, Chief Financial Officer Ramsey Hamady, and other senior leaders and key industry thought leaders will deliver presentations focused on NuScale’s technology, strategy, recent business developments, and opportunities ahead within the energy transition landscape. Those interested in attending the Analyst Day in person must pre-register by contacting ir@nuscalepower.com. A live webcast and related materials will also be available on the NuScale Power Events & Presentations page. A replay will be available for 30 days. About NuScale Power Corporation NuScale Power Corporation (NYSE: SMR) is the industry-leading provider of proprietary and innovative advanced small modular reactor nuclear technology, with a mission to help power the global energy transition by delivering safe, scalable, and reliable carbon- free energy. The company’s groundbreaking VOYGR™ SMR plants are powered by the NuScale Power Module™, 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 design 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, district heating, desalination, commercial-scale hydrogen production, and other process heat applications. Founded in 2007, NuScale is headquartered in Portland, Ore. 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 to the effect that the Company or its management "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 severity and duration of the COVID-19 pandemic and actions by governments, businesses and individuals in response to the pandemic, including the duration and severity of economic disruptions; 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, 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; risks related to provisions of our convertible preferred stock; 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, including the general economic conditions and other risks, uncertainties and factors (a) set forth in the section entitled “Risk Factors” and “Cautionary Statement Regarding Forward-Looking Statements” in the Company’s prospectus dated and filed with the U.S. Securities and Exchange Commission (“SEC”) on July 1, 2022, which is part of the registration statement on Form S-1 declared effective by the SEC on June 30, 2022, in the section entitled “Risk Factors,” (b) set forth in the section entitled “Risk Factors” and “Special Note Regarding Forward-Looking Statements” in the Company’s annual report filed on Form 10-K filed with the SEC on March 15, 2023, and under similar headings in prior filings with the SEC, and (c) associated with companies like the Company that

operate in the energy industry. 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 its forward-looking statements in light of new information or future events. Contacts Investor contact Scott Kozak, Director, Investor Relations, NuScale Power skozak@nuscalepower.com Media contact Diane Hughes, Vice President, Marketing & Communications, NuScale Power dhughes@nuscalepower.com