Eos Energy Enterprises designs and manufactures zinc-based battery energy storage systems (BESS) for utility-scale, microgrid, and commercial and industrial applications. Eos' core product is the Z3 battery module, which uses a proprietary zinc-halide chemistry to store and discharge electricity over 3- to 12-hour or longer periods. Eos sells turnkey DC storage systems directly to utility-scale renewable developers, independent power producers, and microgrid developers, with no distributor intermediary. Eos operates a single manufacturing line in Turtle Creek, PA, and revenue scales with production volume and average selling price per project. The company is pre-profitability and is actively ramping utilization toward full capacity, targeting positive gross margins by exiting Q1 FY26. A key near-term revenue and liquidity lever is the IRA's 45X manufacturing tax credit, which Eos earns on battery capacity produced and sold, and can sell for cash. Eos also holds a $303.5M DOE-guaranteed loan to fund expansion to 8 GWh of annual capacity across multiple lines by 2027. Eos argues its zinc-halide chemistry is non-flammable, operates across wide temperatures without HVAC, degrades slowly over a claimed ~25-year system life, and qualifies for domestic content bonuses — positioning it against Li-ion for longer-duration applications where Li-ion is less competitive.