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Preliminary 2025 facility recordOperating

Gilbert, AZ · EIA plant 66333

Superstition Energy Storage

Superstition Energy Storage is a storage power facility in Gilbert, AZ, with 90 MW of operating capacity.

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Operating capacity90 MW1 operating generators
Proposed capacity0 MW0 proposed generators
UtilitySuperstition Energy Storage, LLCEIA-reported operator
Balancing authoritySRPSalt River Project

Capacity profile

Fuel and technology

Nameplate capacity
Operating
Storage90 MW
ProposedNo proposed capacity reported
Reported technologiesBatteries

Nearby in AZ

Related facilities

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Source quality

Preliminary facility data

This page uses the EIA-860 2025 Early Release. EIA identifies the release as preliminary, so it should not be used for official state or national aggregation. Capacity is nameplate capacity, not real-time output or annual generation.

Read methodologyEIA-860 source