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ESS Tech makes long-duration iron flow batteries for grid and commercial storage, like a giant rechargeable battery that stores renewable energy for hours.
Revenue is minimal (USD 0.01B in 2024) and gross profit is negative, so no business line pays the bills; losses are ongoing, with net income at USD -0.09B in 2024.
Iron flow chemistry is niche, but competitors like Tesla and Fluence offer lithium-ion alternatives with scale and cost advantages, weakening ESS's position. moat_level: eroding
