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Preliminary 2025 facility recordMixed

Melba, ID · EIA plant 66325

Hemmingway BESS

Hemmingway BESS is a storage power facility in Melba, ID, with 116 MW of operating capacity.

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Operating capacity116 MW2 operating generators
Proposed capacity50 MW1 proposed generators
UtilityIdaho Power CoEIA-reported operator
Balancing authorityIPCOIdaho Power Company

Capacity profile

Fuel and technology

Nameplate capacity
Operating
Storage116 MW
Proposed
Storage50 MW
Reported technologiesBatteries

Nearby in ID

Related facilities

ID · 5.3 miMelba BESS2 MW →ID · 12.1 miMora Drop Hydroelectric Project2 MW →ID · 14.8 miMurphy Flat Solar20 MW →ID · 15.5 miKuna BESS150 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