Energy Vault Backlog Hits $2.3B as Cash Triples to $236M

Energy Vault Holdings (NYSE: NRGV) reported third-quarter 2026 revenue of $13.1 million on 10 November 2026, down 61% from $33.3 million a year earlier, while contract backlog reached $2.3 billion and total cash climbed to $236 million. The company affirmed full-year 2026 revenue guidance of $290-310 million and issued preliminary 2027 revenue guidance of $600-700 million with adjusted EBITDA of $40-50 million.

Context — Why Energy Vault's Q3 Matters Now

The headline revenue decline is planned, not accidental. Energy Vault said the drop reflects the timing of project deliveries, with fourth-quarter handovers expected to carry the full-year target. Revenue of $13.1 million against a $290-310 million annual guide puts roughly 95% of the year's top line into the final quarter.

That concentration is the central fact of this print. Backlog rose 147% year-over-year to $2.3 billion, split between about $800 million of Build and Transfer work and $1.5 billion of Build, Own & Operate contracts. The company also affirmed 2026 gross margin of 20-22% and said it expects $170-200 million in total cash at year-end, alongside a reduction in corporate-level recourse debt versus the third quarter.

Management tied the pipeline to AI and data-center power demand. Chief Executive Robert Piconi said Energy Vault "continued advancing our integrated Build, Own & Operate strategy," and cited non-recourse financing for 275 MW of Rolls-Royce MTU reciprocating engine capacity. The company began fourth-quarter deliveries to a 1.25GW hybrid generation and storage project in Texas supporting AI compute.

The balance sheet shifted more than the income statement. Total cash and equivalents, including restricted cash, rose $88 million sequentially and $174 million year-over-year. Corporate-level recourse debt fell $12 million quarter-over-quarter. That combination — more liquidity, less recourse use — is what gives the 2027 guidance any credibility.

Data — What the Numbers Show

Gross margin was the loudest line. GAAP gross margin hit 71.0% versus 27.0% a year earlier, but $4.3 million of tariff refunds flattered the figure. Excluding those refunds, GAAP gross margin was 37.9%. Adjusted gross margin, which adds back non-cash depreciation and amortization, was 81.1% — or 48.0% without the tariff benefit.

Metric	Q3 2026	Q3 2025
Revenue	$13.1M	$33.3M
GAAP gross margin	71.0%	27.0%
Adjusted gross margin	81.1%	30.6%
GAAP net loss	$28.2M	$26.8M
Adjusted EBITDA	-$14.7M	-$6.0M

Operating expenses rose to $33.9 million, up 27% year-over-year, with adjusted operating expenses of $25.2 million, a 56% increase. GAAP net loss widened to $28.2 million, or $(0.17) per share, from $26.8 million. Adjusted net loss was $22.9 million, or $(0.14) per share, and adjusted EBITDA swung to a $14.7 million loss from $6.0 million.

The cash build is the offset. Cash of $236 million against a $290-310 million revenue guide implies the company is funding development with capital, not operating cash. Balance-sheet totals grew to $702.0 million in assets from $312.9 million at 31 December 2025, with contract liabilities rising to $245.5 million from $6.6 million — customer prepayments that will convert to revenue as projects ship.

Analysis — What It Means for Energy Storage and AI Power

Energy Vault sits at the intersection of two traded themes: grid-scale storage and AI data-center power. Its Build, Own & Operate model converts one-time equipment sales into recurring tolling and offtake revenue, which is why the $1.5 billion O&O backlog matters more than the quarter's revenue print. Peers in the storage space trade on bookings and pipeline, not quarterly shipments, because delivery schedules are lumpy by design.

The AI angle is the second-order trade. Non-recourse financing for 275 MW of reciprocating engine capacity, an Italian government designation for the Digital Vault Sulcis project, and the Texas hybrid project tie NRGV's order book to hyperscaler power demand. Companies exposed to data-center electricity procurement — utilities, independent power producers, and storage developers — read this as a demand signal rather than a margin story.

The counter-argument is execution. A 95% fourth-quarter revenue concentration leaves no room for slippage, and the company has already missed delivery timing once this year. Adjusted EBITDA remains negative, and the 2027 guide of $40-50 million implies a swing of roughly $55-65 million from the current run rate. Tariff refunds are non-recurring, so the underlying 37.9% GAAP margin is the honest baseline.

Positioning reflects that tension. NRGV trades as a development-stage infrastructure name, where holders are underwriting backlog conversion and cash runway rather than near-term earnings. The $236 million cash position and declining recourse debt give longs a cushion; the negative adjusted EBITDA and concentrated delivery schedule give shorts their case. Flow tends to follow project-financing headlines and grid-approval news.

Outlook — What to Watch Next

Four catalysts sit on the calendar. Fourth-quarter deliveries must convert the $290-310 million guide, with the company pointing to expected project handovers. Formal grid interconnection approval for the 125 MW / 1 GWh Stoney Creek project in Australia clears the path to an accelerated construction ramp. Multiple project financings in the U.S. and Australia remain underway, and the S2G Investments credit facility of up to $40 million supports development and construction.

On the numbers, watch the year-end cash print against the $170-200 million guide, and whether corporate recourse debt falls as promised. Gross margin for the full year is guided to 20-22%, so any mix shift toward O&O revenue would be the signal that the model is compounding. The 2027 revenue range of $600-700 million is the level that separates a pipeline story from an operating business.

Frequently Asked Questions

Why did Energy Vault's revenue fall 61% in Q3 2026?

The company attributed the decline to the timing of project deliveries, not lost business. Revenue of $13.1 million versus $33.3 million a year earlier reflects a schedule that pushes handovers into the fourth quarter. Energy Vault affirmed full-year 2026 revenue of $290-310 million, which requires roughly 95% of annual revenue to land in Q4. Backlog of $2.3 billion, up 147% year-over-year, is the offsetting measure.

What does the $2.3 billion backlog actually include?

Backlog splits into about $800 million of Build and Transfer work and $1.5 billion of Build, Own & Operate contracts. It covers contracted and contingent option bookings, including fixed payments and estimated variable payments the company believes are probable. Potential future IP royalties, uncontracted residual asset values, and unexercised renewal options are excluded. Contingent option backlog depends on Energy Vault exercising purchase rights and completing projects.

How does the 2027 guidance compare with 2026?

Preliminary 2027 revenue guidance of $600-700 million would roughly double the affirmed 2026 range of $290-310 million. Adjusted EBITDA of $40-50 million would mark a swing from the current negative run rate, with Q3 2026 adjusted EBITDA at a $14.7 million loss. The company did not provide a GAAP reconciliation for the forward figures, citing unavailable information and future events outside its control.

Bottom Line

Energy Vault's cash and backlog improved sharply, but the 2027 profit target rests entirely on converting a fourth-quarter-heavy delivery schedule.

Disclaimer: This article is for informational purposes only and does not constitute investment advice. CFD trading carries high risk of capital loss.