Energy Vault Upsizes Convertible Note to $150M, Repays $45M in Higher-Cost Debt — Energy Vault Holdings, Inc.

Event summary

Energy Vault closed a $150M convertible note offering, upsized from $125M, to strengthen its balance sheet.
Repaid $45M in higher-cost convertible debentures to Yorkville Advisors, improving financial flexibility.
Executed a capped call derivative transaction at a 100% premium to reduce potential dilution.
Reported strong preliminary 2025 results, including positive adjusted EBITDA in Q4 and sequential liquidity growth.

The big picture

Energy Vault's upsized convertible note offering and debt repayment reflect a strategic move to optimize its capital structure amid strong operational performance. The company's focus on high-margin infrastructure verticals and AI power solutions positions it to capitalize on the growing demand for sustainable energy storage and AI-driven power management. The transaction enhances liquidity and financial flexibility, supporting its expansion plans in key growth markets.

What we're watching

Execution Risk: How Energy Vault will deploy the new capital to support its 'own-and-operate' strategy and expand into higher-margin infrastructure verticals.
Market Demand: Whether the accelerated demand for the company's products and services will sustain its strong financial performance.
Strategic Expansion: The pace at which Energy Vault integrates its AI compute infrastructure partnerships with Crusoe and Peak Energy into its core business.