Additional Order Underscores Long-Time Customer’s Trust in Capstone’s Clean, Reliable Power Solutions to Meet Growing Energy Demand

Capstone Green Energy Holdings, Inc. (the "Company” or “Capstone”) (OTCID: CGEH) and Capstone Green Energy, LLC, announced that E-Finity Distributed Generation, Capstone’s distributor for the Mid-Atlantic, Southeastern United States, and the Caribbean, has secured a follow-on order from one of the nation’s leading natural gas producers. The order includes a pre-commissioned skid featuring three C65 microturbines and E-Finity’s m-TIM controller, slated for commissioning this October in the Marcellus Shale region.

With this addition, the customer expands its Capstone fleet to more than 150 units, one of the largest microturbine fleets in the country, demonstrating long-term trust in Capstone’s technology and E-Finity’s service expertise. The microturbines were chosen for their ability to deliver reliable power, ultra-low emissions, and consistent performance, especially in remote, off-grid environments where uninterrupted power is essential.

The pre-commissioned skid is designed for same-day connection and startup, eliminating the need for on-site commissioning. It is also pre-engineered for future scalability, allowing a fourth C65 microturbine to be added to meet potential load growth. The system will be fueled by on-site pipeline natural gas, ensuring seamless integration with the customer’s existing infrastructure.

“Our relentless focus on delivering customer value through innovative, clean, and reliable power solutions continues to resonate with leaders in the natural gas sector,” said Vince Canino, President and CEO of Capstone Green Energy. “This follow-on order is a clear signal that our products and service model are making a difference where it counts, in the field, where reliability is not optional. We are proud to support our partners in driving operational success.”

Capstone’s microturbine systems are known for their low maintenance requirements, low emissions profile, and ability to deliver clean, reliable power in the most demanding environments. This project highlights the growing need for efficient on-site power solutions that enable operators to meet stringent air quality regulations while enhancing operational resilience.

“This order underscores the strength of our technology and service in meeting the demanding needs of natural gas producers,” said Jeff Beiter, Founder and CEO of E-Finity Distributed Generation. “The fully pre-commissioned skid enables rapid deployment with no on-site commissioning, a major advantage for operations in remote areas. Our customer’s commitment to expanding their fleet reflects the durability of Capstone microturbines and the continued faith in the E-Finity team to provide top-tier service.”

About Capstone Green Energy

For nearly four decades, Capstone Green Energy has been a leader in clean technology, pioneering the use of microturbines to revolutionize how businesses manage their energy needs in a sustainable manner. In collaboration with our global network of dedicated distributors, we have shipped over 10,600 units to 88 countries, helping customers significantly reduce their carbon footprints through high-efficiency, on-site energy systems and microgrid solutions.

Our commitment to a cleaner, more resilient energy future remains steadfast. Today, we offer a comprehensive range of microturbine products, from 65kW systems to multi-megawatt solutions, tailored to meet the specific needs of commercial, industrial, and utility-scale customers. In addition to our core microturbine technology, Capstone’s growing portfolio includes flexible Energy-as-a-Service (EaaS) offerings, such as build-own & transfer models, PPA’s, lease to own and rental solutions, are designed to provide maximum value and energy security.

Capstone’s fast, turnkey power rental solutions are designed for customers with limited capital budgets or short-term energy needs. For more information, please contact us at rentals@CGRNenergy.com.

In our pursuit of cutting-edge energy solutions, Capstone has forged strategic partnerships to expand our impact and capabilities. Through these collaborations, we proudly offer advanced technologies that leverage renewable gas and heat recovery solutions—further enhancing the sustainability, efficiency, and reliability of our clients' operations. These integrated offerings reflect our commitment to building a cleaner, more responsible energy future.

For more information about the Company, please visit www.CapstoneGreenEnergy.com. Follow Capstone Green Energy on Twitter, LinkedIn, Instagram, Facebook, and YouTube.

Cautionary Notes

This release contains forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. The Company has tried to identify these forward-looking statements by using words such as “expect,” “anticipate,” “believe,” “could,” “should,” “estimate,” “intend,” “may,” “will,” “plan,” “goal” and similar terms and phrases, but such words, terms and phrases are not the exclusive means of identifying such statements. Actual results, performance and achievements could differ materially from those expressed in, or implied by, these forward-looking statements due to a variety of risks, uncertainties and other factors, including, but not limited to, the following: the Company’s liquidity position and ability to access capital; the Company’s ability to continue as a going concern; the Company’s ability to successfully remediate the material weaknesses in internal control over financial reporting; the Company’s ability to realize the anticipated benefits of its financial restructuring; the Company’s ability to comply with the restrictions imposed by covenants contained in the exit financing and the new subsidiary limited liability company agreement; the uncertainty associated with the imposition of tariffs and trade barriers and changes in trade policies; employee attrition and the Company’s ability to retain senior management and other key personnel; the Company's ability to develop new products and enhance existing products; product quality issues, including the adequacy of reserves therefor and warranty cost exposure; intense competition; financial performance of the oil and natural gas industry and other general business, industry and economic conditions; the impact of litigation and regulatory proceedings; inquiries from the SEC; the potential material adverse effect on the price of the Company’s common stock and stockholder lawsuits. For a detailed discussion of factors that could affect the Company’s future operating results, please see the Company’s filings with the Securities and Exchange Commission, including the risk factors contained in our most recent Annual Report on Form 10-K. Except as expressly required by the federal securities laws, the Company undertakes no obligation to update or revise any forward-looking statements, whether as a result of new information, changed circumstances or future events or for any other reason.

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Our customer’s commitment to expanding their fleet reflects the durability of Capstone microturbines and the continued faith in the E-Finity team to provide top-tier service.