Eos Energy Enterprises reported a sharp revenue increase but widened net losses as it scales zinc battery production for utilities.
Eos Energy Enterprises reported $114.2 million in revenue for fiscal year 2025, up from $15.6 million the prior year, driven by utility-scale zinc battery sales. The company posted a net loss of $969.6 million, reflecting an 849.1% negative net margin as it invests in manufacturing expansion.
Two customers accounted for 70.3% of total revenue, highlighting concentration risk. Eos focuses on long-duration energy storage to relieve grid congestion and integrate renewables, competing with hydrogen-based solutions like Plug Power.
Shares remain under pressure as investors weigh growth potential against persistent losses and high capital expenditures.