Jr. R&D Data Engineer

Google is partnering with Eos Energy and MN8 Energy to build the Mammoth Solar project in West Virginia, representing a capital investment of up to $350 million. The facility will power Google's regional data centres, including an upcoming West Virginia facility. The project combines 86 MW of solar power with hybrid battery storage: 70 MW/280 MWh lithium-ion and 10 MW/100 MWh of Eos's Z3 zinc-based long-duration storage system. This marks Google's first deployment of Eos's Z3 technology. Eos Energy, trading at approximately $4 per share with a $1.5 billion market cap, could benefit significantly from the partnership. The project represents the first deployment under a 750 MWh master supply agreement between MN8 and Eos signed in October 2025. However, Eos's financials show substantial losses. Whilst revenue grew from $5 million in 2021 to $114 million in 2025, net losses expanded from $124 million to $970 million over the same period.

Bloom Energy and Eos Energy Enterprises both serve the growing energy infrastructure sector, but target different markets. Bloom provides onsite power through solid oxide fuel cell technology for data centres and utilities, whilst Eos offers zinc-based long-duration energy storage for renewable energy grids. Bloom reported revenue exceeding $2 billion in fiscal 2025, representing approximately 37% growth, though it posted a net loss of roughly $88.4 million. The company maintains partnerships including a $5 billion financing framework with Brookfield. Eos achieved revenue of approximately $114.2 million in 2025, a 630% increase year-over-year, but reported a significantly wider net loss of nearly $1.75 billion as it ramped up commercial manufacturing. Both companies face distinct risks. Bloom contends with pending securities litigation and supply chain dependencies linked to China. Eos confronts ongoing losses, reliance on external capital, and competition from larger battery manufacturers. For 2026, Bloom expects revenue to leap 85% to $3.75 billion, driven by AI data centre demand. Eos projects revenue to more than double, with management citing a $25 billion business pipeline.

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.