Eos Energy Enterprises Announces Preliminary Second Quarter 2026 Financial Results, Expects Record Quarterly Revenue and Backlog, and Sets Second Quarter 2026 Conference Call Date

Eos Energy Enterprises, Inc. (NASDAQ: EOSE) (“Eos” or the “Company”), America’s leading innovator in designing, manufacturing, and providing zinc-based long-duration energy storage (LDES) systems sourced and manufactured in the United States, today announced preliminary financial results for the second quarter ended June 30, 2026.

Based on preliminary financial information, Eos currently expects: Revenue of $68 million to $69 million, representing the highest quarterly revenue in its history, driven by a more than three-fold increase in shipments compared to the prior-year period. Revenue recognized during the first half of 2026 surpassed the Company's total revenue for 2025.

Gross margin loss between 69% and 73%, reflecting continued progress in manufacturing scale and operational execution. The second quarter marked the Company's transition to operating two commercial production lines across two manufacturing facilities. Battery Line 2 commenced commercial production in mid-June and has delivered strong initial results, achieving higher yields and faster cycle time than Battery Line 1 as it operates in the early stages of production ramp. While start-up costs and lower initial production volumes are expected to create near-term cost absorption pressure, as is typical during the early stages of a production ramp-up, the expansion significantly increases capacity and establishes the foundation for stronger unit economics an...