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Eos Energy Enterprises vs Energy Vault Holdings

Energy Vault Holdings is the larger business, with $204m of revenue in fiscal 2025 against $114m for Eos Energy Enterprises (1.8 times as much). Eos Energy Enterprises grew faster (631.8% against 340.9%). Energy Vault Holdings kept more of each dollar of sales as profit: a net margin of -50.9% against -849.1%.

Latest fiscal yearEos Energy EnterprisesEOSE, 2025Energy Vault HoldingsNRGV, 2025
Revenue $114m $204m
Revenue growth 631.8% 340.9%
Net income −$970m −$104m
Operating margin -227.0% -36.5%
Net margin -849.1% -50.9%
Return on equity — -107.0%
Free cash flow −$265m −$46.7m
Cash $568m $58.3m
Total debt $939m $99.6m
Debt to equity — 147.6%
Dividend per share — —
Dividend yield — —
Share buybacks — —
Employees 787 142
Market value $634m $565m
Price vs our value range — —
Moat score 17 (Weak) 17 (Weak)
Insider trades, 12 months 6 buys, 24 sales 11 buys, 5 sales

Each figure is from the company's latest annual report and links to the page it comes from. Fiscal years can end on different dates. Market value and the value verdict use the delayed price shown on the stock pages. Not a recommendation.

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Figures from each company's latest annual report filed with the SEC (10-K or 20-F), as reported, with the fiscal year shown. Not investment advice. How we read filings: methodology.