Energy Vault Holdings, Inc. (NYSE:NRGV) is one of the best renewable energy penny stocks to buy.
On March 3, 2026, Energy Vault said it closed an upsized $150 million financing in convertible senior notes, above the $125 million size it had initially announced. The company said the deal was aimed at strengthening its balance sheet and supporting execution of its own-and-operate strategy.
Energy Vault also said it used part of the proceeds to repay existing higher-cost debt. Specifically, on February 19, 2026, the company redeemed about $45 million in aggregate principal amount of senior unsecured convertible debentures previously issued to YA II PN, Ltd., an affiliate of Yorkville Advisors. According to the release, it removed the principal from Energy Vault’s balance sheet and improved future financial flexibility.
The company added that it entered into a capped call derivative transaction at a 100% premium to the pre-announcement closing price of $4.06, resulting in an effective future conversion price of $8.12 per share. Energy Vault said the structure was designed to reduce potential dilution.
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Management linked the financing to what it described as strong preliminary 2025 results, including above-consensus revenue, gross margin, and total cash, as well as progress toward profitability. Chairman and CEO Robert Piconi said the company achieved positive adjusted EBITDA in the fourth quarter and increased cash and liquidity sequentially through the year. Energy Vault said it would provide full fourth-quarter and full-year 2025 results, along with its 2026 outlook, on March 17, 2026.
Energy Vault Holdings, Inc. (NYSE:NRGV) develops, deploys, and operates utility-scale energy storage systems. Its offerings include battery, gravity, and green hydrogen storage technologies, supported by an energy management software and integration platform for utilities, independent power producers, and large industrial users.
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