Capstone Green Energy Holdings has secured a $112.5 million strategic investment aimed at simplifying its capital structure, strengthening its balance sheet, and accelerating growth initiatives, including expansion into AI data center energy solutions.
The transaction is led by funds managed by Monarch Alternative Capital LP and includes $80 million in newly issued senior convertible preferred stock and $15 million in common stock. An additional $17.5 million will be raised through a concurrent private placement involving existing investors.
A major portion of the proceeds, $85 million, will be used to fully redeem legacy preferred equity held by an entity controlled by Goldman Sachs. This move will result in Capstone Green Energy LLC becoming a wholly owned subsidiary and marks a significant step in simplifying the company’s capital structure.
The preferred stock issued in the deal carries a 5.00% annual dividend, is convertible at $5.00 per share, and includes provisions for mandatory conversion if the company’s stock trades above $15.00 for a sustained period. The PIPE financing values shares at $4.50 each.
Beyond balance sheet restructuring, Capstone plans to deploy remaining funds toward growth initiatives, including scaling engineering capabilities, increasing production capacity, and targeting emerging demand from AI-driven data center infrastructure.
As part of the agreement, Monarch will gain the right to appoint two independent directors to the company’s seven-member board. Capstone also committed to pursuing a listing on a U.S. national securities exchange within 12 months of closing.
The deal is expected to close around March 31, 2026, subject to customary conditions.
KEY QUOTES:
“This is a breakout moment for Capstone Green Energy. Monarch’s investment is more than capital – it is a strategic endorsement in our technology platform, our people, and the accelerating demand for clean distributed energy solutions at a time when AI data centers are fundamentally reshaping global energy infrastructure. This transaction accomplishes a key objective we have worked towards for the past two years – having a clean, agile capital structure, which allows our team to properly invest in and grow our business. It further helps to establish a defined path to a U.S. national securities exchange listing. Capstone has not been better positioned than it is today.”
Vince Canino, President And Chief Executive Officer, Capstone Green Energy
“This investment validates the meaningful progress we have made transforming Capstone. Building on our $15 million private placement in November, it further accelerates our trajectory. Together with Monarch, we are focused on executing on our strategy and delivering lasting value for all stakeholders.”
Robert Powelson, Interim Chairman Of The Board, Capstone Green Energy

