Long-Duration Energy Storage
Multi-hour and multi-day storage for renewable-heavy grids.
Beyond lithium-ion, long-duration storage includes flow batteries, gravity storage, thermal storage, and compressed air systems designed to deliver power for 10–100+ hours. These technologies smooth out multi-day renewable fluctuations, enabling grids to operate reliably with very high penetrations of wind and solar.
Technology Readiness Level
5
Validated
Impact
5
Very High
Investment
4
High
Category
Hardware
Physical infrastructure, equipment, and devices.
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