Full-Time
Manufactures aqueous zinc battery energy storage
No salary listed
Company Does Not Provide H1B Sponsorship
Warrendale, PA, USA
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Eos Energy Storage develops and manufactures aqueous zinc battery energy storage systems for commercial, industrial, utility, and renewable energy customers. The systems store electrical energy in an aqueous zinc chemistry and are designed for 3 to 12 hours of use to support grid resiliency, peak shaving, demand management, and intermittent renewable generation. The products are modular battery packs with simplified components aimed at reducing production costs and risks while delivering reliable storage for microgrids and large-scale projects. Compared with typical lithium-ion approaches, Eos focuses on a different chemistry and a streamlined design to provide cost-effective, safe energy storage for grid applications. The company’s goal is to accelerate the transition to clean energy by enabling reliable, affordable storage that boosts grid reliability and supports renewable integration.
Company Size
201-500
Company Stage
IPO
Headquarters
Edison, New Jersey
Founded
2008
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Health Insurance
Paid Vacation
Flexible Work Hours
Eos Energy Enterprises reported a Q2 2026 net loss of $276 million, primarily from non-cash fair value adjustments of warrants and derivatives. The company tightened its 2026 revenue guidance to $300 million to $350 million due to manufacturing downtime during facility consolidation. Management is accelerating the consolidation of production into its Thorn Hill facility, which is expected to reduce conversion costs by 10% to 15% with a nine-month payback period. The company achieved record cube shipments and a 20% sequential output increase at its Turtle Creek facility whilst maintaining flat labour costs. Eos expects a 72-point improvement in adjusted gross margin over the next 12 months through material cost reductions and manufacturing efficiencies. The company anticipates closing the second year tranche of its advanced request loan by the end of Q3.
Eos Energy Enterprises reported record revenue of $68.8 million in Q2 2026, up 351% year-over-year and 21% sequentially. Cube deliveries increased 207% year-over-year. The company achieved its seventh consecutive quarter of gross margin improvement, with adjusted gross margin improving 132 points year-over-year. It ended the quarter with $364 million in total cash and nearly 100% free cash flow conversion from operations. The company's fleet has cumulatively discharged 6.5 gigawatt hours of energy. Its pipeline grew to $24.6 billion (nearly 112 GWh), up 31% year-over-year, with 51% being eight hours or longer and 32% data centre related. Eos narrowed its 2026 revenue guidance to $300 million to $350 million as it consolidates manufacturing operations. Despite revenue growth, the company reported a gross loss of $48.8 million and adjusted EBITDA loss of $71.4 million.
Eos Energy Enterprises completed a $37.7 million composite units offering on 21 July 2026, followed by a $19.9 million shelf registration for common stock. Since the capital raises, the company's share price has declined sharply, with a 39.1% drop over 30 days and 73.94% year-to-date fall. The stock now trades at $3.38, below analyst fair value estimates. One narrative values the shares at $3.20, suggesting 5.6% overvaluation, whilst a discounted cash flow model estimates fair value at $4.52, implying 25.3% undervaluation. Investors face significant risks including the company's $939 million in liabilities against only $114 million in revenue, high customer concentration, and complex debt structure. The investment depends on zinc-based battery technology commercialisation and continued policy support.
Eos Energy Enterprises raised approximately $263 million for Frontier Power USA, combining a $37.7 million rights offering with institutional investments from Hudson Bay Capital Management and Cerberus Capital Management. The financing aims to support over $1 billion in deployable project capital for long-duration energy storage using the company's zinc battery systems. Shareholders subscribed for only 6.9 million of 27.4 million units offered, representing roughly 25% participation. Eos shares fell approximately 5.5% to $3.76 on 23 July, about 31% below the $5.481 rights offering price. The company reported preliminary second-quarter revenue between $68 million and $69 million, more than tripling from the prior year. However, gross margins remained negative at 69% to 73%, reflecting start-up expenses and low initial production volumes. The financing creates significant dilution, with approximately 20.6 million new shares issued immediately and warrants potentially adding another 39 million shares. Cerberus will control four of seven Frontier Power USA board seats.
Eos Energy Enterprises won a U.S. defense contract to supply its zinc-based long-duration energy storage technology in support of the Golden Dome for America missile-defense initiative, providing resilient power for critical defense infrastructure.