Sunnova Releases 2023 Sustainability Report, Delivering On its Efforts to Empower, Adapt, and Evolve

Sunnova Energy International, Inc. ("Sunnova") (NYSE: NOVA), an industry-leading adaptive energy services company, has announced the publication of its fourth annual Sustainability Report for the year ending December 31, 2023. The report includes details on current sustainability progress, reflections on strategy, and its plans to meet the needs of valued customers, investors, regulators, communities, and employees. This is also the third year in which the company has publicly reported progress on sustainability goals.

"In just four short years, we've greatly evolved our sustainability strategy and the way in which we serve our customers through our adaptive energy services," said Kelsey Hultberg, EVP of Sustainability and Corporate Communications at Sunnova. "This report transparently communicates the current progress on our strategy and continuing efforts to sustainably power the energy independence of our customers and communities, in addition to delivering value to our investors and employees."

The report contains several key highlights and progress updates, including:

• Surpassing our 2023 goal to offset 52 million MTCO₂e through our customer base over the systems' useful life.
• Improved supplier engagement with sustainability reporting and due diligence assessments.
• Aligning new customer and community impact case studies with relevant UN Sustainable Development Goals.
• Investing in talent development and corporate governance with over 10,000 hours of employee development training and over 37,000 hours of safety training.
• Achieving more than 1,200 community service hours in 2023 alone.

"Sunnova is determined to help America achieve the transition to a net-zero economy," said William J. (John) Berger, Chief Executive Officer at Sunnova. "It requires innovation, bold action, thoughtfulness, and alignment with leading climate science, all without sacrificing affordability, resilience, and energy equity. As we look ahead, our focus remains on positively impacting customers and their communities by sustainably powering the home and business of the future through innovative solutions and unparalleled customer service."

Please click here to view Sunnova's 2023 Sustainability Report.

About Sunnova
This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking statements generally relate to future events or Sunnova's future financial or operating performance. In some cases, you can identify forward-looking statements because they contain words such as "may," "will," "should," "expects," "plans," "anticipates," "going to," "could," "intends," "target," "projects," "contemplates," "believes," "estimates," "predicts," "potential" or "continue" or the negative of these words or other similar terms or expressions that concern Sunnova's expectations, strategy, priorities, plans or intentions. Forward-looking statements in this release include, but are not limited to, statements regarding our ESG goals and our ability to achieve such goals and the related timing thereof. Sunnova's expectations and beliefs regarding these matters may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including risks regarding our ability to forecast our business due to our limited operating history, the effects of the coronavirus pandemic on our business and operations, supply chain uncertainties, results of operations and financial position, our competition, changes in regulations applicable to our business, fluctuations in the solar and home-building markets, availability of capital, and our ability to attract and retain dealers and customers and manage our dealer and strategic partner relationships. The forward-looking statements contained in this release are also subject to other risks and uncertainties, including those more fully described in Sunnova's filings with the Securities and Exchange Commission, including Sunnova's annual report on Form 10-K for the year ended December 31, 2023, and subsequent quarterly reports on Form 10-Q. The forward-looking statements in this release are based on information available to Sunnova as of the date hereof, and Sunnova disclaims any obligation to update any forward-looking statements, except as required by law.