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Preliminary 2025 facility recordOperating

Tolleson, AZ · EIA plant 66334

Sierra Estrella Energy Storage

Sierra Estrella Energy Storage is a storage power facility in Tolleson, AZ, with 250 MW of operating capacity.

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Operating capacity250 MW1 operating generators
Proposed capacity0 MW0 proposed generators
UtilitySierra Estrella Energy Storage, LLCEIA-reported operator
Balancing authoritySRPSalt River Project

Capacity profile

Fuel and technology

Nameplate capacity
Operating
Storage250 MW
ProposedNo proposed capacity reported
Reported technologiesBatteries

Nearby in AZ

Related facilities

AZ · 1.5 miEstrella Mountain PV2 MW →AZ · 5.6 miPluto Energy Storage75 MW →AZ · 5.8 miMacys Goodyear3 MW →AZ · 6.0 miWhite Tank Energy Storage100 MW →

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