8-K: Energy Vault Surges on Record Backlog and Raised Guidance

Energy Vault Holdings, Inc. reported a strong second quarter of 2026 with revenue up 104% year-over-year, significantly expanded gross margins, and a record contract backlog of $2 billion, leading to raised full-year revenue and gross margin guidance.

Summary

• Energy Vault Holdings, Inc. announced its financial results for the second quarter ended June 30, 2026, showcasing significant year-over-year growth.
• Revenue for Q2 2026 reached $17.4 million, a 104% increase compared to the prior-year period, driven by progress in Australia-based BESS projects.
• GAAP gross profit rose by 114% to $5.4 million, with GAAP gross margin improving to 31.0%. Adjusted gross margin saw a substantial increase to 38.6%.
• The company's contract backlog expanded to approximately $2 billion, a 107% increase year-over-year, with about 40% expected to convert to revenue in the next 12-18 months and 60% from owned and operated projects.
• Global MW under operation, construction, and ready-to-build (RTB) grew to approximately 1.1 GW, up 476% year-over-year.
• Cash and cash equivalents increased to $148 million, marking the sixth consecutive quarterly increase.
• Full-year 2026 revenue guidance has been raised to $270-310 million, and GAAP gross margin guidance is now projected at 20-25%.
• A significant strategic agreement was executed for 1.25 GW of integrated power, storage, and software infrastructure for hyperscaler AI data centers, expected to generate $500-600 million in near-term revenue.

Sentiment

Score: 8

Explanation: StockSavvy.ai views this as a strongly positive report, driven by significant revenue growth, expanded gross margins, and a substantial increase in contract backlog, alongside raised full-year guidance.

Positives

• Revenue increased by 104% year-over-year to $17.4 million in Q2 2026.
• GAAP gross margin improved to 31.0% in Q2 2026, up 140 basis points year-over-year.
• Adjusted gross margin expanded significantly to 38.6% in Q2 2026, up 900 basis points year-over-year.
• Contract backlog reached a record ~$2 billion as of August 10, 2026, up 107% year-over-year.
• Global MW under operation, construction, and RTB grew to ~1.1 GW, a 476% increase year-over-year.
• Cash and cash equivalents grew 26% sequentially to $148 million, the sixth consecutive quarterly increase.
• Full-year 2026 revenue guidance was raised to $270-310 million.
• Full-year 2026 GAAP gross margin guidance was lifted to 20-25%.

Negatives

• GAAP net loss for Q2 2026 was $29.7 million, compared to $34.9 million in the prior-year period.
• Adjusted EBITDA loss for Q2 2026 was $17.0 million, compared to a loss of $13.6 million in the prior-year period.
• Adjusted net loss for Q2 2026 was $24.6 million, compared to $18.4 million in the prior-year period.
• General and administrative expenses increased to $22.7 million in Q2 2026 from $19.1 million in Q2 2025.
• Long-term debt increased significantly to $165.0 million as of June 30, 2026, from $38.0 million as of December 31, 2025.

Risks

• The company faces risks related to the uncertainty of awards, bookings, and backlog translating into future revenue.
• There is no assurance that non-binding letters of intent will result in binding financings, orders, or sales.
• The company's ability to successfully provide AI power infrastructure and secure additional work is a risk.
• Products or services could be alleged to be defective or experience other failures.
• The implementation, market acceptance, and success of the business model and growth strategy are subject to risk.
• Developments in U.S. and global trade policy, including tariffs, could impact the business.
• Changes in tax laws and government regulations, including those related to clean-energy tax credits, pose risks.
• Investment in development projects may not achieve commercial operations within the predicted timeframe or at all.

Future Outlook

Full-year 2026 revenue guidance has been increased to $270-310 million, and GAAP gross margin guidance has been raised to 20-25%. The company targets $160-200 million in total cash at year-end 2026. The company expects to generate approximately $180 million in annual run-rate EBITDA over the next 18-36 months from its owned and operated assets.

Management Comments

• "Our second quarter results reinforce our confidence in our outlook, with revenue more than doubling year-over-year, gross margin expanding significantly and backlog soaring to record levels of ~$2 billion."
• "Importantly ~ 60% of our $2 billion backlog represents long-term, annual recurring revenue from our owned energy infrastructure assets while ~40% represents more near-term revenue conversion and deliveries over the next 12-18 months at strong gross margins as our most recent Q2 results demonstrate."
• "We have a large delivery ramp into our second half and even greater ramp in 2027 given the growth in contracted backlog as we continue building a more predictable, higher-margin and recurring revenue profile that will drive significant long-term shareholder value."

Industry Context

StockSavvy.ai notes that Energy Vault's strong performance and raised guidance align with the increasing demand for grid-scale energy storage and AI-driven infrastructure solutions, particularly from hyperscalers. The company's focus on a 'Build, Own & Operate' model and expansion into key markets like Japan and Texas positions it to capitalize on these trends.

Comparison to Industry Standards

• Energy Vault's revenue growth of 104% in Q2 2026 significantly outpaces the average growth rates seen in many traditional energy infrastructure companies.
• The expansion of GAAP gross margins to 31.0% and adjusted gross margins to 38.6% indicates improving operational efficiency, which is a key benchmark for profitability in the energy storage sector.
• The contract backlog of $2 billion, representing a 107% year-over-year increase, demonstrates strong market traction, a critical indicator for future revenue visibility that is highly valued by investors in this capital-intensive industry.
• The company's target of generating $180 million in annual run-rate EBITDA over 18-36 months from its owned assets suggests a strategic shift towards recurring revenue streams, a model increasingly favored across the energy sector for its stability.

Management Changes

Stakeholder Impact

• Shareholders: Potential for increased value due to strong revenue growth, improved margins, raised guidance, and expansion of recurring revenue streams.
• Employees: Continued growth and expansion may lead to increased employment opportunities and potential for career advancement.
• Customers: Benefit from enhanced energy infrastructure solutions, particularly for AI data centers and utilities, with improved reliability and cost efficiency.
• Suppliers: Increased project execution and backlog suggest sustained demand for components and services.
• Creditors: Improved financial performance and cash generation may strengthen the company's ability to service debt obligations.

Next Steps

• Continue execution of growth plans and capitalize on record contract bookings.
• Focus on converting approximately 40% of the $2 billion backlog to revenue over the next 12-18 months.
• Advance the 'own and operate' strategy with the global multi-asset class portfolio.
• Deliver on the expected $180 million in annual run-rate EBITDA over the next 18-36 months.
• Scale infrastructure to meet rapidly growing AI power demand, as seen in the Texas AI Campus project.
• Integrate the acquired Japanese BESS development portfolio and advance projects towards notice to proceed.

Key Dates

Recommendation

The filing indicates significantly better-than-expected results, with substantial revenue growth, margin expansion, a record backlog, and raised forward guidance. The strategic expansion into AI infrastructure and the strengthening of the balance sheet with increased cash reserves, coupled with key management appointments, present a compelling growth narrative that warrants a strong buy recommendation.

Keywords

Energy Storage, AI Infrastructure, Grid-Scale, Revenue Guidance, Gross Margin, Contract Backlog, BESS, Hyperscaler