Search
Search plants, projects, owners, and states
Search plants, projects, owners, and states
40 MW BESS operating in Anchorage, AK — Chugach Electric Assn Inc
40 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2024
Operating Since
Coordinates
61.1699, -149.9131
County
Anchorage, AK
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Chugach Electric Assn Inc | — | — |
| Owner(s) | Chugach Electric Assn Inc, Matanuska Electric Assn Inc | — | — |
| Status | Operating | — | — |
The International Battery Substation (IBSS) is a 40 MW battery energy storage system located in Anchorage County, Alaska. The plant, which began operating in 2024, is owned and operated by Chugach Electric Association Inc. It is the third-largest of six battery storage facilities in Alaska, and ranks 630th out of 1205 such facilities nationally.
The facility consists of a single generator utilizing lithium-ion battery (LIB) chemistry. The battery system has a total storage capacity of 80 MWh, providing a duration of 2 hours at its full 40 MW output. The plant's primary fuel is listed as "MWH," indicating that it draws power from the grid to charge its batteries. The International Battery Substation operates within the balancing authority of Chugach Electric Association Inc.
Generated from EIA, GEM, and public data sources
Grid Region
Other
Market
Bilateral Market
NERC Region
—
Balancing Authority
−302 MWh
Net Charging
-2.5K MWh
Annual Net Energy
-0.9%
Capacity Factor
Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.
2023
$1,361/kW
Est. Construction Cost
Total estimated cost: $54.4M
This plant is in a bilateral market territory without organized wholesale pricing. Nodal pricing data is not available.
No news articles linked yet for this plant.
News enrichment runs on demand — we have the pipeline, we just haven't fetched coverage for this plant yet. Request a detailed re-run and we'll add it.
No ask pi reports yet for this entity.
ask pi about International Battery Substation (IBSS)Chugach Electric Assn Inc (CEA)
Grid Voltage
35.0 kV
Regulatory Status
RE — Regulated
Entity Type
Cooperative
Sector
Electric Utility