0001628280-26-034368
SEC filingEos Energy's Q1 2026 revenue surged 445% YoY to $57.0M on higher deliveries and pricing, though cost of goods sold exceeded revenue, resulting in a negative gross margin as the company scales production.
For the three months ended March 31, 2026, Eos Energy Enterprises reported a significant increase in revenue, which grew by $46.5 million, or 445%, to $57.0 million compared to $10.5 million in the prior-year period. This growth was primarily attributed to an increase in product deliveries, a higher average selling price, and increased revenue from third-party materials, partially offset by a decline in service revenue.
Despite the top-line growth, the company's cost of goods sold (COGS) increased at a faster rate, rising by $66.4 million, or 190%, to $101.4 million. This resulted in COGS significantly exceeding revenue. The increase in COGS was driven by higher cube deliveries, increased direct and indirect labor, higher field service costs associated with the increased deliveries, and higher volume-driven warranty accruals. The company recognized a $10.3 million reduction in COGS related to the Inflation Reduction Act (IRA) production tax credit (PTC), compared to $1.8 million in the prior year. The company explicitly stated it expects COGS to exceed revenues in the near term as it continues to scale production.
Operating expenses also increased. Research and development (R&D) expenses rose by $3.9 million, or 57%, to $10.7 million, due to higher facility, materials, and payroll costs. Selling, general, and administrative (SG&A) expenses increased by $3.1 million, or 15%, to $24.1 million, driven by higher facility, marketing, and insurance costs.
The company reported net income of $508.9 million for the quarter. This was entirely due to substantial non-cash gains totaling $577.0 million, primarily from changes in the fair value of warrants ($168.7 million), derivatives ($165.9 million), and derivatives with related parties ($267.2 million). These fair value adjustments were largely driven by a decrease in the company's common stock price quarter-over-quarter. Cash used in operating activities was $119.7 million, with net cash outflows from changes in operating assets and liabilities of $51.6 million, driven by increases in contract assets and grant receivables, and decreases in contract liabilities and accounts payable.
The MD&A does not provide a breakdown of financial performance by operating segment. The narrative focuses on the company's single BESS product line and its related services. The discussion highlights the successful transition to the Eos Z3 battery platform, which is the core of its current product offering. The company also detailed the introduction of two new strategic offerings: the DawnOS software platform, designed to enhance BESS value and reliability, and Eos Indensity, a new high-density energy storage architecture targeting up to 1 GWh per acre. These are presented as integral components of the future product portfolio, indicating a strategic shift toward integrated hardware, software, and architecture solutions.
The company's growth strategy is centered on scaling production of its Z3 battery to meet increasing customer demand from utilities, independent power producers, and C&I customers. Management expects capital expenditures and working capital requirements to increase to support this growth, with total capex for Q1 2026 at $35.1 million, up from $4.9 million in the prior year. The company continues to rely on outside capital and expects this to continue until it reaches profitability. It highlighted $186.6 million in remaining availability under its DOE Loan Facility but noted that failure to achieve funding conditions could require seeking alternative capital. Strategic priorities include leveraging legislative incentives like the IRA and OBBBA production tax credits, and pursuing new market opportunities, as evidenced by the joint development agreement with TURBINE‑X Energy to deploy power infrastructure for AI data centers.
Eos Energy Enterprises reported net income of $508.9 million for Q1 2026, yet operating cash flow was deeply negative at -$119.7 million. This massive divergence is driven by $577.0 million in non-cash adjustments, primarily changes in fair value of warrants and derivatives, which inflated net income but did not generate cash. The underlying cash generation remains weak, with a $51.6 million working capital drain from increases in contract assets and grant receivables, and decreases in contract liabilities and accounts payable.
Capital expenditures surged to $35.1 million from $4.9 million in Q1 2025, reflecting aggressive investment in the Warrendale manufacturing facility. With negative operating cash flow and high capex, the company's cash burn is substantial. Financing activities provided only $2.7 million, a sharp decline from $42.2 million in the prior year, as the company did not complete significant capital transactions. The company drew $90.9 million previously under its DOE Loan Facility but has not accessed additional tranches.
No dividends were paid. Share repurchases of $0.5 million in the prior year were related to employee tax withholding, not a capital return program. The company's unrestricted cash position of $410.7 million provides a runway, but the widening gap between reported net income and actual cash generation, combined with escalating capex, signals a need for continued external financing to sustain operations and growth.