Ameresco (AMRC) Q2 2026 earnings review
Massive Data Center Awards Mask Severe Cash Burn and Bottom-Line Weakness
Ameresco's Q2 2026 was defined by a historic backlog expansion, driven by $1.2B in new data center power infrastructure awards. Top-line revenue grew a steady 9% YoY. However, beneath the impressive sales pipeline, earnings quality and cash conversion are deteriorating. GAAP Net Income dropped 24% YoY, heavily burdened by interest, depreciation, and the new Neogenyx JV non-controlling interest. More alarmingly, operating cash flow plunged to negative $107M as unbilled receivables ballooned to nearly $890M. Management raised full-year EPS guidance, but this was entirely driven by a favorable accounting change for tax credits, not operational outperformance.
🐂 Bull Case
The company successfully secured $1.2B in data center awards in a single quarter, bringing the total number of awarded data center projects to five. This positions Ameresco perfectly for the AI-driven 'behind-the-meter' power boom.
O&M segment revenue surged 29% YoY while its Adjusted EBITDA skyrocketed 184%, highlighting excellent operating leverage in the recurring revenue base.
🐻 Bear Case
GAAP Operating Cash Flow was deeply negative at -$107.2M for the quarter. Even backing out ESPC and ITC timing (Adjusted OCF), cash flow was -$65.3M. Working capital is being trapped in massive unbilled revenues.
Management raised FY26 Non-GAAP EPS guidance by ~$0.05, but explicitly stated this was due to shifting to a new accounting policy for transferable tax credits, yielding a larger expected tax benefit (-25% to -40%). Operational EBITDA guidance remained flat.
⚖️ Verdict: ⚪
Neutral. The long-term backlog story is undeniably spectacular, but the short-term reality is a capital-intensive slog. Investors must weigh exceptional multi-year revenue visibility against immediate cash flow burn and complex JV accounting.
Key Themes
Data Center Boom Triggers Historic Backlog Spike
Ameresco's strategic pivot toward capital-intensive 'Power Infrastructure' is paying off rapidly. Total Awarded Project Backlog spiked 65% YoY to $4.4B, with $1.2B coming from just three new behind-the-meter data center projects. Data centers now represent 24% of the total project backlog. This confirms the macroeconomic thesis that grid-constrained tech giants are increasingly relying on private microgrids, reciprocating engines, and battery energy storage systems (BESS).
Severe Cash Burn and Working Capital Traps
Despite framing execution as 'outstanding,' cash flow data contradicts the narrative. Operating Cash Flow for Q2 was -$107.2M. Even using management's preferred 'Adjusted Cash from Operations' metric, cash flow was -$65.3M (reversing from +$49.5M a year ago). The culprit is working capital: 'Unbilled Revenue' sits at an astonishing $889.7M, up nearly $90M since year-end 2025. Ameresco is effectively financing massive infrastructure buildouts on its own balance sheet before it can bill customers.
O&M Segment Shows Explosive Operating Leverage
The unsung hero of Q2 was the Operations & Maintenance (O&M) segment. Revenue grew a solid 29% to $36.1M, but Adjusted EBITDA nearly tripled, surging 184% to $9.8M. The Adjusted EBITDA margin for this segment expanded dramatically from 12.3% in 25Q2 to 27.1% in 26Q2. As the installed base of complex microgrids and energy assets scales, this recurring, high-margin revenue stream is accelerating.
Energy Asset Profitability Compresses
While Energy Asset revenue grew 21% YoY to $75.9M, the segment swung from a $3.4M Net Income profit last year to a $2.8M Net Loss this quarter. Adjusted EBITDA margin for the segment dropped from 53.7% to 45.9%. This deceleration in profitability is driven by higher depreciation and interest expenses from newly operational assets, alongside margin dilution from the Neogenyx JV structure.
Guidance Raise Driven by Tax Accounting, Not Operations
Ameresco raised its FY26 Non-GAAP EPS guidance from $1.06-$1.28 to $1.15-$1.35. However, operational guidance (Revenue and Adjusted EBITDA) remained completely unchanged. Management explicitly tied the EPS raise to a change in accounting policy for transferable tax credits in H2, effectively front-loading the recognition of these credits rather than amortizing them over the asset lives. This boosts paper EPS but does not represent an acceleration in underlying business fundamentals.
Other KPIs
A massive drag on liquidity. Unbilled revenue increased by $90.6M since December 31, 2025. This indicates a high volume of percentage-of-completion project work where costs have been incurred but billing milestones have not yet been reached. Reversing this trend is critical to restoring positive cash flow.
Stable. Corporate leverage remains just below the 3.5x covenant limit. However, total Energy Asset Debt reached $1.55 billion, representing a 69% advance rate against the $2.24B Energy Asset Book Value. The company relies heavily on non-recourse project debt to fund its rapid expansion.
Guidance
Stable. Reaffirmed from prior guidance. At the $2.1B midpoint, this implies approximately 8.7% YoY growth from FY25's $1.93B, maintaining steady, high-single-digit expansion.
Stable. Reaffirmed from prior guidance. At the $260M midpoint, implies roughly 9.6% YoY growth from FY25's $237.2M. The company expects margin cadence to remain steady, with H2 contributing heavily to the total.
Accelerating artificially. Raised from the Q1 guide of $1.06-$1.28. The company expects an effective tax benefit rate between -25% and -40%, driven by a new accounting methodology for investment tax credits, lowering the recognized tax burden.
Key Questions
Unbilled Revenue Normalization
With unbilled revenues approaching $900M and driving severe negative operating cash flow, what specific billing milestones do you expect to cross in H2 to reverse this working capital drain?
Data Center Conversion Timeline
You added $1.2B in data center awards this quarter. Given the complexity of these 10-20 year agreements and required grid interconnects, what is the realistic timeline for these to transition from 'Awarded' to 'Contracted' backlog and begin generating project revenue?
Energy Asset Margins
Energy Asset Adjusted EBITDA margins fell nearly 800 basis points YoY. How much of this is structural due to the new Neogenyx JV non-controlling interests versus temporary operational hiccups?