Eos Energy (EOSE) Stock: Record Q2 Revenue and $807M Backlog Sends Stock Higher

TLDR

• Eos Energy expects Q2 revenue of $68M–$69M, the highest in company history
• First-half 2026 revenue has already surpassed all of 2025 revenue
• Backlog hit a record $807 million as of June 30, up ~25% from the prior quarter
• Battery Line 2 entered commercial production during Q2, expanding manufacturing capacity
• EOSE stock jumped nearly 10% following the preliminary results announcement

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Eos Energy Enterprises (EOSE) stock surged nearly 10% on Wednesday after the company released preliminary Q2 2026 results, pointing to record revenue and a record order backlog.

The stock was trading up 9.38% at $4.78 in premarket Thursday following the announcement.

Eos Energy Enterprises, Inc., EOSE

Eos expects Q2 revenue between $68 million and $69 million. That’s the highest quarterly revenue in the company’s history.

Combined with Q1 results, first-half 2026 revenue has already topped the company’s full-year 2025 figure. That kind of year-over-year acceleration doesn’t happen by accident.

Shipments more than tripled compared to the same period a year ago. New orders also exceeded quarterly shipments, meaning the pipeline is still building.

The company reported a record backlog of approximately $807 million as of June 30. That’s up roughly 25% from the previous quarter and gives Eos strong forward revenue visibility.

Total cash, including restricted cash, is expected to reach around $364 million. Customer collections of approximately $78 million actually surpassed quarterly revenue — a healthy sign for cash flow dynamics.

Battery Line 2 Now in Commercial Production

Eos began commercial production on Battery Line 2 during Q2, giving the company two active commercial production lines across two manufacturing facilities.

The expansion comes at a cost. Eos expects a gross margin loss of 69% to 73% for the quarter, reflecting start-up costs and lower initial production volumes typical of a ramp phase.

Management said the expanded capacity should improve unit economics over time as volumes increase and efficiencies kick in.

CEO Joe Mastrangelo called the quarter one of “disciplined execution,” saying the results demonstrate that investments in the manufacturing platform are translating into stronger top-line and commercial performance.

Frontier Power USA Partnership Adds Long-Term Upside

Earlier this year, Eos partnered with private equity firm Cerberus to launch Frontier Power USA — an independent company focused on developing and operating long-duration battery energy storage projects using Eos technology.

The partnership expands Eos’s commercial reach beyond just selling batteries to also having a committed customer for large-scale storage deployment.

Full Q2 earnings are scheduled for August 5, when the company will provide a complete financial update.

Eos Energy’s 52-week range sits between $4.05 and $19.86, with the stock currently trading well below its highs as margins remain under pressure during the production ramp.