Preliminary 2025 facility recordProposed

Mesa, AZ · EIA plant 68477

Pediment BESS I

Pediment BESS I is a storage power facility in Mesa, AZ, with 250 MW of proposed capacity.

Operating capacity0 MW0 operating generators
Proposed capacity250 MW1 proposed generators
UtilityPediment BESS I LLCEIA-reported operator
Balancing authoritySRPSalt River Project

Capacity profile

Fuel and technology

Nameplate capacity
OperatingNo operating capacity reported
Proposed
Storage250 MW
Reported technologiesBatteries

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