Eos Energy (EOSE) Stock Jumps 36% on Cerberus Deal and Q1 Earnings Beat

TLDR

• Eos Energy (EOSE) surged 36.7% pre-market after announcing a major partnership with Cerberus Capital Management.
• The two companies will form Frontier Power USA to build and operate long-duration battery energy storage projects using Eos’ Z3 zinc bromide technology.
• Cerberus is anchoring the venture with a $100M equity commitment and extending its EOSE lock-up through year-end 2026.
• Q1 revenue hit $56.96M, up 445% year over year, with diluted EPS of $0.12 versus a loss of $0.20 in the prior year period.
• Eos reaffirmed its full-year 2026 revenue guidance of $300M–$400M.

Eos Energy Enterprises had a busy morning. The long-duration energy storage company came into Wednesday with two pieces of news — a major strategic partnership and a Q1 earnings beat — and the market took notice fast, sending the stock up 36.7% in pre-market trading.

The stock was up 36.7% pre-market to kick off Wednesday, May 13.

Eos Energy Enterprises, Inc., EOSE

Eos and Cerberus Capital Management are forming a new independent company called Frontier Power USA. The joint venture will build, own, and operate a portfolio of long-duration battery energy storage projects, all running on Eos’ proprietary zinc bromide-based Z3 technology.

The structure brings together three pieces: Eos’ vertically integrated technology stack, Cerberus’ institutional capital and operating experience, and a performance wrap from Ariel Green, which underwrites Z3 performance and helps project debt reach investment-grade status at competitive terms.

Cerberus is putting real money behind this. The firm committed $100M in equity to anchor Frontier Power USA and agreed to extend its existing EOSE lock-up through the end of 2026.

In exchange, Cerberus is set to receive Eos warrants and controlling equity in Frontier Power USA.

Q1 Numbers Come In Strong

On the earnings side, Eos reported Q1 2026 revenue of $56.96M — a 445% jump compared to $10.46M in the same period last year.

Diluted EPS came in at $0.12, compared to a loss of $0.20 per share a year ago, a 160% swing.

Net income attributable to shareholders reached $508.88M for the quarter, up from $15.14M in Q1 2025.

The revenue growth was driven by higher product deliveries, increased average selling prices, and expanded third-party material sales.

Manufacturing and Product Updates

The company has transitioned its manufacturing to the next-generation Z3 platform, with the first automated production line now in commercial operation.

Capital spending was heavy in the quarter. Eos put $35.1M into capital expenditures in Q1, focused on expanding its Warrendale facility and scaling automated Z3 production.

On the product side, Eos launched its DawnOS software in 2025 and introduced Eos Indensity in January 2026. Both are aimed at improving system intelligence, density, and deployment flexibility.

The company also expanded its service offerings, including battery management systems, project management, commissioning, and long-term maintenance to support commercial deployments.

For the full year, Eos reaffirmed revenue guidance of $300M–$400M.

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