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Preliminary 2025 facility recordOperating

Anchorage, AK · EIA plant 68611

International Battery Substation (IBSS)

International Battery Substation (IBSS) is a storage power facility in Anchorage, AK, with 40 MW of operating capacity.

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Operating capacity40 MW1 operating generators
Proposed capacity0 MW0 proposed generators
UtilityChugach Electric Assn IncEIA-reported operator
Balancing authorityCEAChugach Electric Assn Inc

Capacity profile

Fuel and technology

Nameplate capacity
Operating
Storage40 MW
ProposedNo proposed capacity reported
Reported technologiesBatteries

Nearby in AK

Related facilities

AK · 0.3 miSouthcentral Power Project204 MW →AK · 3.9 miHank Nikkels Plant 178 MW →AK · 7.7 miGeorge M Sullivan Generation Plant 2347 MW →AK · 11.4 miFire Island Wind18 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