Long-Duration

Energy Storage That's Safe

Enable resilient, reliable energy today

ESS iron flow batteries ensure electricity is available when it’s needed despite aging infrastructure, climate impacts, remote locations, or fluctuations in supply and demand.

Make renewable baseload energy possible

Mitigate renewable intermittency and eliminate the need for fossil fuel plants with up to 12 hours of storage. ESS batteries are the foundation for a decarbonized grid.

Maximize value with flexible storage

Iron flow technology allows for unlimited cycling with zero capacity degradation over a 25-year design life. That enables stacked revenue streams.

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Sycamore International solar and energy storage

Iron flow batteries

Long-duration energy storage (LDES) is the linchpin of the energy transition, and ESS batteries are purpose-built to enable decarbonization. As the first commercial manufacturer of iron flow battery technology, ESS is delivering safe, sustainable, and flexible LDES around the world.

Applications

Green baseload energy

Utility-scale DER

Industrial microgrids

Electrifying transport

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Upcoming events

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LDES insights

A California Plan: How California Leads Decarbonization white paper cover image

A California Plan:
How California Leads Decarbonization