Built on years of proven in-house AI and optimization expertise, AIONA expected to help energy organizations translate AI strategy into measurable economic and operational results

Stem Inc. (NYSE:STEM), a global leader in AI-enabled clean energy software and services, today announced the launch of AIONA, Stem's AI services offering developed in direct response to growing customer and market demand for practical, execution-focused artificial intelligence solutions.

AIONA builds on Stem's deep experience applying AI, data science, optimization, and automation across complex clean energy environments. Through its PowerTrack™ platform and broader software and services portfolio, Stem supports customers managing solar, storage, and hybrid assets across global markets. AIONA will extend that same outcomes-driven, operational expertise to help organizations identify where AI can create measurable value and deploy solutions that improve performance, efficiency, and decision-making.

"Our customers consistently tell us that AI is a priority, but knowing where it will drive real value and how to deploy it responsibly is the hard part," said Arun Narayanan, Chief Executive Officer of Stem. "AIONA is not a new capability we built for the market. It reflects AI expertise we have developed and deployed internally for years, including in our products, and our operations, and how we serve customers every day. We are not just advising on AI. We identify the right problems to solve, engineer purpose-built agents, integrate them into operations, and deliver measurable outcomes. With a strong foundation in AI-enabled clean energy software, Stem is well positioned to support energy organizations as they define and execute their AI strategies."

Through AIONA, Stem will work with existing clean energy customers and other organizations across the energy sector to assess data maturity, identify operational inefficiencies, and prioritize high-value use cases. The offering will then move from assessment to execution, with structured value discovery, prioritized roadmaps, and deployment of production-grade AI solutions, including custom agents designed to automate complex processes, improve decision-making, optimize performance, and reduce operational risk. Beyond deployment, AIONA will support integration, governance, performance measurement, and change management to help solutions scale and deliver sustained financial and operational impact.

"Our customers are not looking for another strategy deck or proof of concept that never makes it to production. AIONA is the result of listening closely to what our customers actually need," said Tatjana Legans, Vice President of Marketing and New Business at Stem. "They need a partner who can sit alongside their teams, identify the highest-impact opportunities, and build something that works in production. AIONA is built to do exactly that."

AIONA is available immediately to existing Stem customers and other organizations across the energy market in North America and select international markets. For more information, visit stem.com/ai-services.

About Stem

Stem (NYSE:STEM) is a global leader reimagining technology to support the energy transition. We turn complexity into clarity and potential into performance.

Stem helps asset owners, operators, and energy stakeholders unlock the full value of their portfolios by enabling the intelligent development, deployment, and operation of clean energy assets. Stem's integrated software suite, PowerTrack™, is the industry-standard and best-in-class platform for asset monitoring and optimization and is backed by expert professional and managed services, all delivered under one roof. Designed to address complex energy challenges seamlessly, our technology transforms raw data into clear, actionable insights, providing the visibility and intelligence needed to drive performance. With projects across 55 countries, customers have trusted Stem for nearly 20 years to maximize the value of their clean energy investments.

Driven by human and artificial intelligence, Stem is unlocking energy intelligence. Learn more at stem.com.

Forward-Looking Statements

This press release, as well as other statements we make, contains "forward-looking statements" within the meaning of the federal securities laws, which include any statements that are not historical facts. Such statements often contain words such as "expect," "may," "can," "believe," "predict," "plan," "potential," "projected," "projections," "forecast," "estimate," "intend," "anticipate," "ambition," "goal," "target," "think," "should," "could," "would," "will," "hope," "see," "likely," and other similar words. Forward-looking statements address matters that are, to varying degrees, uncertain, such as statements about AIONA, our business strategies and those of our customers; our ability to retain or upgrade current customers, and our ability to further penetrate existing markets or expand into new markets. Such forward-looking statements are subject to risks, uncertainties, and other factors that could cause actual results or outcomes to differ materially from those expressed or implied by such forward-looking statements, including but not limited to our operational and strategic initiatives; including from our cost reduction, workforce reduction and restructuring efforts; our inability to successfully execute on our strategy; the effects of the One Big Beautiful Bill on our business and that of our customers; disruptions in sales, production, service or other business activities; general macroeconomic and business conditions in key regions of the world, including inflationary pressures, general economic slowdown or a recession, high interest rates, changes in monetary policy, changes in trade policies, including tariffs or other trade restrictions or the threat of such actions, and instability in financial institutions; the direct and indirect effects of widespread health emergencies on our workforce, operations, financial results and cash flows; geopolitical instability, such as the armed conflicts between Russia and Ukraine and in the Gaza Strip and nearby areas; the results of operations and financial condition of our customers; pricing pressures; severe weather and seasonal factors; our inability to continue to grow and manage our growth effectively; our inability to attract and retain qualified employees and key personnel; our inability to comply with, and the effect on our business of, evolving legal standards and regulations, including those concerning data protection, consumer privacy, sustainability, and evolving labor standards; risks relating to the development and performance of our software-enabled services; our inability to retain or upgrade current customers, further penetrate existing markets or expand into new markets; the risk that our business, financial condition and results of operations may be adversely affected by other political, economic, business and competitive factors; and other risks and uncertainties discussed in this release and in our most recent Forms 10-K, 10-Q and 8-K led with or furnished to the SEC. If one or more of these or other risks or uncertainties materialize (or the consequences of any such development changes), or should our underlying assumptions prove incorrect, our actual results or outcomes, or the timing of these results or outcomes, may vary materially from those reflected in our forward-looking statements. Forward-looking statements and other statements in this release regarding our environmental, social, and other sustainability plans and goals are not an indication that these statements are necessarily material to the Company, investors, or other stakeholders, or required to be disclosed in our lings under U.S. securities laws or any other laws or requirements applicable to the Company. In addition, historical, current, and forward-looking environmental, social, and sustainability-related statements may be based on standards for measuring progress that are still developing, internal controls and processes that continue to evolve, and assumptions that are subject to change in the future. Forward-looking statements in this press release are made as of the date of this release, and the Company disclaims any intention or obligation to update publicly or revise such forward-looking statements, whether as a result of new information, future events, or otherwise, except as required by law.

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For News Media:

Stem Investor Contacts

Erin Reed, Stem

Marc Silverberg, ICR

IR@stem.com

Stem Media Contact

Tatjana Legans, Stem

press@stem.com

Stem Launches AIONA, a Dedicated AI Services Offering Built for Operational Impact