Capstone Green Energy (Nasdaq: CGRN) (“Capstone”, or the “Company”), a global leader in carbon reduction and on-site resilient green Energy as a Service (EaaS) solutions, today announced that it has commenced an underwritten public offering of shares of its common stock and warrants to purchase shares of its common stock. The offering is subject to market and other conditions, and there can be no assurance as to whether or when the offering may be completed, or as to the actual size or terms of the offering.

Lake Street Capital Markets, LLC is acting as the sole book-running manager for the offering and Joseph Gunnar & Co. is acting as co-manager for the offering.

Capstone intends to use the net proceeds from the offering for working capital, general corporate purposes and growth initiatives, including to expand its Energy as a Service long-term rental fleet.

A shelf registration statement on Form S-3 (File No. 333-254547) relating to the securities being offered was filed with the U.S. Securities and Exchange Commission (the “SEC”) on March 22, 2021, and became effective on April 14, 2021. The offering will be made only by means of a prospectus supplement and accompanying prospectus that form a part of the shelf registration statement. A preliminary prospectus supplement and accompanying prospectus relating to the proposed offering will be filed with the SEC and will be available on the SEC's website, located at www.sec.gov. Alternatively, copies of the prospectus supplement and accompanying prospectus may be obtained, when available, from Lake Street Capital Markets, LLC, Attn: Syndicate Department, 920 Second Avenue South, Suite 700, Minneapolis, MN 55402, by calling (612) 326-1305, or by emailing This email address is being protected from spambots. You need JavaScript enabled to view it.. Before you invest, you should read the preliminary prospectus supplement and accompanying prospectus, together with the information incorporated therein, for more complete information about Capstone and the proposed offering.

About Capstone:

Capstone Green Energy (www.CapstoneGreenEnergy.com) (NASDAQ: CGRN) is a leading provider of customized microgrid solutions and on-site energy technology systems focused on helping customers around the globe meet their environmental, energy savings, and resiliency goals. Capstone Green Energy focuses on four key business lines. Through its Energy as a Service (EaaS) business, it offers rental solutions utilizing its microturbine energy systems and battery storage systems, comprehensive Factory Protection Plan (FPP) service contracts that guarantee life-cycle costs, as well as aftermarket parts. Energy Generation Technologies (EGT) are driven by the Company's industry-leading, highly efficient, low-emission, resilient microturbine energy systems offering scalable solutions in addition to a broad range of customer-tailored solutions, including hybrid energy systems and larger frame industrial turbines. The Energy Storage Solutions (ESS) business line designs and installs microgrid storage systems creating customized solutions using a combination of battery technologies and monitoring software. Through Hydrogen & Sustainable Products (H2S), Capstone Green Energy offers customers a variety of hydrogen products, including the Company’s microturbine energy systems.

Forward-Looking Statements:

This release contains forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995, including statements regarding the Company’s proposed offering and other statements regarding the Company's expectations, beliefs, plans, intentions, and strategies. 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, without limitation, risks that the proposed offering is not completed due to market conditions, failure to satisfy the conditions to closing of the offering or other factors and other risks described in the Company's prior press releases and in its filings with the SEC, including under the heading "Risk Factors" in the Company's preliminary prospectus supplement and accompanying prospectus related to the proposed offering and any other filings with the SEC. You are cautioned not to place undue reliance on these forward-looking statements. Except as expressly required by the federal securities laws, the Company undertakes no obligation to update or revise this press release (including any forward-looking statements contained herein), whether as a result of new information, changed circumstances or future events or for any other reason, except as required by law. Furthermore, the Company cannot guarantee future results, events, levels of activity, performance, projections or achievements.