Energy Vault Reports Third Quarter 2025 Financial Results

Contract revenue backlog of $920 million, up 112% year-to-date

Q3 2025 Revenue of $33.3 million improved 27x versus the prior year, driven by increased Energy Storage Solutions projects in Australia and first revenue streams from US-based own and operate Asset Vault projects

Q3 2025 GAAP gross profit of $9.0 million up nearly 18x versus the prior year, driven by increased revenue and favorable business mix, resulting in Q3 2025 gross margin of 27.0% and 32.6% year-to date

Q3 2025 Adjusted EBITDA loss narrowed 59% to $6.0 million versus a loss of $14.7 million in the prior year period

Cash as of September 30, 2025 was $61.9 million, up 7% sequentially and in-line with previously guidance

Closed $300 million preferred equity agreement with OIC for the launch of ‘Asset Vault', Energy Vault's new build, own and operate business; completed acquisition of 150 MW Sosa BESS project in Texas, the 4^th project within Asset Vault for a total of 340 MW under operation and construction

Asset Vault Fund 1 expected to contribute $100-150 million in recurring Adjusted EBITDA by year-end 2029 from 1.5GW+ in attractive projects across high-growth markets in the U.S., Australia, and Europe

Announced agreement with EU Green Energy to deploy 1.8 GWh of BESS in Europe

Announced collaboration with Crusoe, the AI Factory Company, to power and accelerate the deployment of Crusoe SPARK modular data centers, enabled by Energy Vault's advanced energy storage solutions and AI-augmented energy management software

Reaffirming full year 2025 guidance across all key metrics; well positioned to execute on growth in 2026 and beyond

Energy Vault Holdings, Inc. (NYSE:NRGV) ("Energy Vault" or "the Company"), a leader in sustainable, grid-scale energy storage solutions, announced financial results for the third quarter ended September 30, 2025.

"Following a strong operational quarter, we made major progress on our ‘build-own-operate' Asset Vault strategy, targeting 1.5 gigawatts of storage capacity within the inaugural fund, including the acquisition of an attractive 150 megawatt project in Texas and the closing of a $300 million non-dilutive preferred equity investment from Orion Infrastructure Capital (OIC)," said Robert Piconi, Chairman of the Board and CEO of Energy Vault. "Our commercial team also unlocked new regional markets and super high growth new market segments, including agreements with EU Green Energy and Crusoe, the AI Factory Company. Importantly, we also increased our cash balance by completing a $50 million non-dilutive financing facility that is incremental to the OIC funding. We are reaffirming full-year 2025 guidance for all key metrics, including our forecast to continue to grow our cash balance sequentially in 2025 projecting $75-$100 million in cash at the end of the year, which, together with our strong $920 million backlog, positions us well for continued growth in 2026 and beyond."

Third Quarter 2025 Financial Highlights

• Revenue backlog as of September 30, 2025, reached $920 million, 112% higher year-to-date. The backlog increase reflects new projects with Consumers Energy, a long-term service agreement (LTSA) with an existing customer, and long-term offtake agreements in the U.S. and Australia

• Q3 2025 revenue of $33.3 million was up significantly from $1.2 million in the prior-year period, driven by Australia project execution and initial contributions from Asset Vault projects, including Calistoga and Cross Trails

• Q3 2025 GAAP gross profit of $9.0 million improved significantly from $0.5 million in the prior year period; GAAP gross margin were 27.0%, relatively flat sequentially

• Exited September 30, 2025 with total cash (including restricted cash) of $61.9 million reflecting an increase of 7% sequentially and consistent with the previously issued guidance range

• Q3 2025 GAAP operating expenses of $26.6 million and adjusted operating expenses of $16.2 million, flat sequentially, as ongoing cost reduction initiatives were generally offset by start-up costs and development expenses related to Asset Vault

• Q3 2025 Adjusted EBITDA loss improved to $6.0 million, up from $14.7 in the prior year quarter, driven by higher revenue and gross profit

Operating and Other Recent Highlights

• Closed $300 million preferred equity agreement with OIC for the launch of new Own & Operate business called ‘Asset Vault'; expected to contribute $100-150 million in recurring Adjusted EBITDA by year-end 2029

• Completed acquisition of the 150MW / 300MWh Sosa Battery Energy Storage System (BESS) Project in Texas, marking the fourth project in the Asset Vault portfolio; Fund 1 now targets more than 1.5GW of high-quality storage projects across high-growth markets in the U.S., Australia, and Europe

• Placed 8.5MW / 293MWh Calistoga Resiliency Center and 57MW / 114MWh Cross Trails in service, collectively expected to contribute annualized Adjusted EBITDA of $10 million; project financing completed, and Investment tax credit (ITC) transfer expected to close this year

• Completed $50 million Securities Purchase Agreement with YA II PN, of which, $30 million has been drawn to date

• Announced agreement with EU Green Energy to deploy up to 1.8 GWh of BESS over the next four years, with a 400 MWh project in Albania, subject to final Albanian legislative approval

• Demonstrated sustainability leadership once again, earning a 2025 Corporate Sustainability Assessment score of 74/100 from S&P Global Sustainable1 and currently placing us in the 98th percentile of the Machinery and Electrical Equipment industry.

Business Outlook

• Reaffirming full year 2025 guidance across all key metrics

• Estimating full year 2025 revenue of $200-250 million (within the prior guidance range), reflecting the timing of U.S. battery deliveries and project timelines

• Estimating full year 2025 gross margin of 14-16%, in line with our historical average

• Cost side initiatives in place, now scaling up development activity and support services for Asset Vault

• Targeting $75-100 million in total cash at the end of 2025 including recent Asset Vault capitalization, approximately $40 million in net ITC proceeds, customer receivables and other growth initiatives

• During the recent Investor and Analyst Day (held on October 29, 2025, replay available on our website) management guided to $40 million in recurring Adjusted EBITDA associated with its first four Asset Vault projects (including the recently acquired/announced 150MW Sosa project), accelerating to $100-150 million in recurring Adjusted EBITDA by year end 2029

• We encourage you to watch the recording to gain a deeper understanding of our integrated approach and strategic direction as we accelerate the global deployment of advanced energy storage.

Watch the recording here

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Conference Call Information

Energy Vault will host a conference call today, November 10, 2025 at 4:30 PM ET to discuss the results, followed by a Q&A session. A live webcast of the call can be accessed at https://investors.energyvault.com/events-and-presentations/events. Participants may access the call at 1-877-704-4453, international callers may use 1-201-389-0920, and request to join the Energy Vault Holdings earnings call. A live webcast will also be available at https://investors.energyvault.com/events-and-presentations/events. A telephonic replay of the call will be available shortly after the conclusion of the call and until Monday, November 24, 2025. Participants may access the replay at 1-844-512-2921, international callers may use 1-412-317-6671 and enter access code 13756385. An archived replay of the call will also be available on the investors portion of the Energy Vault website at https://investors.energyvault.com/.

About Energy Vault

Energy Vault® develops, deploys and operates utility-scale energy storage solutions designed to transform the world's approach to sustainable energy storage. The Company's comprehensive offerings include proprietary battery, gravity and green hydrogen energy storage technologies supporting a variety of customer use cases delivering safe and reliable energy system dispatching and optimization. Each storage solution is supported by the Company's technology-agnostic energy management system software and integration platform. Unique to the industry, Energy Vault's innovative technology portfolio delivers customized short, long and multi-day/ultra-long duration energy storage solutions to help utilities, independent power producers, and large industrial energy users significantly reduce levelized energy costs while maintaining power reliability. Since 2024, Energy Vault has executed an "Own & Operate" asset management strategy developed to generate predictable, recurring and high margin tolling revenue streams, positioning the Company for continued growth in the rapidly evolving energy storage asset infrastructure market. Please visit www.energyvault.com for more information.

Non-GAAP measures

Energy Vault has provided a reconciliation of net loss to adjusted EBITDA, with net loss being the most directly comparable GAAP measure, for the historical periods in this press release. Energy Vault has also provided a reconciliation of reported S&M, R&D and G&A expenses to adjusted S&M expenses, adjusted R&D expenses, and adjusted G&A expenses, respectively, and a reconciliation of reported operating expenses to adjusted operating expenses for the historical periods in this press release. A reconciliation of projected non-GAAP measures for the full-year 2024 has not been provided because certain information necessary to calculate such measures on a GAAP basis is not available without unreasonable efforts or dependent on the timing of future events outside of our control. Therefore, because of the uncertainty and variability of the nature of the amount of future adjustments, which could be significant, the Company is unable to provide a reconciliation for these forward-looking non-GAAP measures without unreasonable effort.

Developed pipeline represents uncontracted potential revenue from third-party projects where potential prospective customers have either awarded the Company a project or shortlisted the Company for consideration. It also includes potential tolling revenue from projects where the Company is in advanced negotiations to build, own, and operate energy storage systems. Developed pipeline is an internal management metric that we construct using information from our global sales team and is monitored by management to understand the potential anticipated growth of our Company and to estimate potential future revenue. Developed pipeline is influenced by the prevailing foreign exchange rates and equipment prices and may vary from period to period if these inputs change.

Backlog represents contracted but unrecognized revenue from third-party projects and services yet to be completed, unrecognized revenue or other income from IP licensing agreements, and unrecognized revenue from tolling arrangements for projects operated by Energy Vault or affiliates. Backlog includes any potential future variable payments from tolling and offtake arrangements that the Company believes is probable of being realized. Probable future variable payments are forecasted by an independent third-party firm using simulation software that factors in current and projected energy market dynamics, historical and forecasted volatility, and location specific data. The Company considers the low-end simulation results to be probable. Potential future IP royalties are not included in backlog. Backlog is a common measurement used in our industry. Our methodology for determining backlog may not, however, be comparable to the methodologies used by others.

Forward-Looking Statements

This press release includes forward-looking statements that reflect the Company's current views with respect to, among other things, the Company's operations and financial performance. Forward-looking statements include information concerning possible or assumed future results of operations, including descriptions of our business plan and strategies. These statements often include words such as "anticipate," "expect," "contemplate," "continue," "suggest," "plan," "potential," "predict," "believe," "intend," "project," "forecast," "estimate," "target," "project," "projections," "should," "target," "could," "would," "may," "might," "will" and other similar expressions. We base these forward-looking statements or projections on our current expectations, plans, and assumptions, which we have made in light of our experience in our industry, as well as our perceptions of historical trends, current conditions, expected future developments and other factors we believe are appropriate under the circumstances at the time. These forward-looking statements are based on our beliefs, assumptions, and expectations of future performance, taking into account the information currently available to us. These forward-looking statements are only predictions based upon our current expectations and projections about future events. These forward-looking statements involve significant risks and uncertainties that could cause our actual results, level of activity, performance or achievements to differ materially from the results, level of activity, performance or achievements expressed or implied by the forward-looking statements, including changes in our strategy, expansion plans, customer opportunities, future operations, future financial position, estimated revenues and losses, expected monetization of tax credits, expected financings, projected costs, prospects and plans; the uncertainly of our awards, bookings, backlog and developed pipeline equating to future revenue; the lack of assurance that non-binding letters of intent and other indication of interest can result in binding financings, orders or sales; the possibility of our products to be or alleged to be defective or experience other failures; the implementation, market acceptance and success of our business model and growth strategy; our ability to develop and maintain our brand and reputation; developments and projections relating to our business, our competitors, and industry; the impact of macroeconomic uncertainty, including with respect to uncertainty about the future relationship between the United States and other countries with respect to trade policies, taxes, government regulations, and tariffs; investment in development projects that may not achieve commercial operations in our predicted timeframe or at all; our efforts to diversify our supply chain to lessen the impact of tariffs; the ability of our suppliers to deliver necessary components or raw materials for construction of our energy storage systems in a timely manner; the impact of health epidemics, on our business and the actions we may take in response thereto; our expectations regarding our ability to obtain and maintain intellectual property protection and not infringe on the rights of others; expectations regarding the time during which we will be an emerging growth company under the JOBS Act; our future capital requirements and sources and uses of cash; the international nature of our operations and the impact of war or other hostilities on our business and global markets; our ability to obtain funding for our operations and future growth; our business, expansion plans and opportunities, including our expectation that our first two-owned projects will begin generating revenue in 2025, and other important factors discussed under the caption "Risk Factors" in our Annual Report on Form 10-K for the year ended December 31, 2024 filed with the SEC on April 1, 2025, as such factors may be updated from time to time in its other filings with the SEC, accessible on the SEC's website at www.sec.gov. New risks emerge from time to time, and it is not possible for our management to predict all risks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements we may make. Any forward-looking statement made by us in this press release speaks only as of the date of this press release and is expressly qualified in its entirety by the cautionary statements included in this press release. We undertake no obligation to publicly update or review any forward-looking statement, whether as a result of new information, future developments or otherwise, except as may be required by any applicable laws. You should not place undue reliance on our forward-looking statements.

Non-GAAP Financial Measures

To complement our condensed consolidated statements of operations, we use non-GAAP financial measures of adjusted selling and marketing ("S&M") expenses, adjusted research and development ("R&D") expenses, adjusted general and administrative ("G&A") expenses, adjusted operating expenses, adjusted net loss, and adjusted EBITDA. Management believes that these non-GAAP financial measures complement our GAAP amounts and such measures are useful to securities analysts and investors to evaluate our ongoing results of operations when considered alongside our GAAP measures. The presentation of these non-GAAP measures is not meant to be considered in isolation or as an alternative to other measures of financial performance calculated in accordance with GAAP. These non-GAAP measures and their reconciliation to GAAP financial measures are shown below.

The following table provides a reconciliation from GAAP S&M expenses to non-GAAP adjusted S&M expenses (amounts in thousands, unaudited):

The following table provides a reconciliation from GAAP R&D expenses to non-GAAP adjusted R&D expenses (amounts in thousands, unaudited):

The following table provides a reconciliation from GAAP G&A expenses to non-GAAP adjusted G&A expenses (amounts in thousands, unaudited):

The following table provides a reconciliation from GAAP operating expenses to non-GAAP operating expenses (amounts in thousands, unaudited):

The following table provides a reconciliation from net loss attributable to Energy Vault Holdings, Inc and net loss per share attributable to Energy Vault Holdings, Inc - basic and diluted, to non-GAAP adjusted net loss and non-GAAP adjusted net loss per share attributable to Energy Vault Holdings, Inc - basic and diluted (amounts in thousands except per share data, unaudited):

The following table provides a reconciliation from net loss to non-GAAP adjusted EBITDA, with net loss being the most directly comparable GAAP measure (amounts in thousands, unaudited):

We present adjusted EBITDA, which is net loss excluding adjustments that are outlined in the quantitative reconciliation provided above, as a supplemental measure of our performance and because we believe this measure is frequently used by securities analysts, investors, and other interested parties in the evaluation of companies in our industry. The items excluded from adjusted EBITDA are excluded in order to better reflect our continuing operations.

In evaluating adjusted EBITDA, one should be aware that in the future we may incur expenses similar to the adjustments noted above. Our presentation of adjusted EBITDA should not be construed as an inference that our future results will be unaffected by these types of adjustments. Adjusted EBITDA is not a measurement of our financial performance under GAAP and should not be considered as an alternative to net loss, operating loss, or any other performance measures derived in accordance with GAAP or as an alternative to cash flow from operating activities as a measure of our liquidity.

Our adjusted EBITDA measure has limitations as an analytical tool, and should not be considered in isolation or as a substitute for analysis of our results as reported under GAAP. Some of these limitations are:

• it does not reflect our cash expenditures, future requirements for capital expenditures, or contractual commitments;

• it does not reflect changes in, or cash requirements for, our working capital needs;

• it does not reflect stock-based compensation, which is an ongoing expense;

• although depreciation, amortization, and accretion are non-cash charges, the assets being depreciated and amortized will often have to be replaced in the future, and our adjusted EBITDA measure does not reflect any cash requirements for such replacements;

• it is not adjusted for all non-cash income or expense items that are reflected in our condensed consolidated statements of cash flows;

• it does not reflect the impact of earnings or charges resulting from matters we consider not to be indicative of our ongoing operations;

• it does not reflect limitations on or costs related to transferring earnings from our subsidiaries to us; and

• other companies in our industry may calculate this measure differently than we do, limiting its usefulness as a comparative measure.

Because of these limitations, adjusted EBITDA should not be considered as a measure of discretionary cash available to us to invest in the growth of our business or as a measure of cash that will be available to use to meet our obligations. You should compensate for these limitations by relying primarily on our GAAP results and using adjusted EBITDA only supplementally.

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