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23.4 MW Hydro operating in Bonneville, ID — PacifiCorp - East
23.4 MW
Nameplate Capacity
1
Generators
unit
Conventional Hydroelectric
Technology
1988
Operating Since
Coordinates
43.4202, -112.1019
County
Bonneville, ID
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | City of Idaho Falls - (ID) | — | — |
| Owner(s) | City of Idaho Falls - (ID) | — | — |
| Status | Operating | — | — |
Located in Bonneville County, Idaho, the Gem State hydroelectric plant has a total capacity of 23.4 MW. The plant began operating in 1988 and is owned and operated by the City of Idaho Falls. It utilizes conventional hydroelectric technology with one generator and its primary fuel source is water (WAT). Gem State is ranked 19th out of 76 power plants in Idaho and 457th nationally out of 1464 plants.
In the most recent year with available data, the plant generated 108,516 MWh of electricity, achieving a capacity factor of 52.8%. The Gem State plant operates within the PacifiCorp - East balancing authority and the Western Electricity Coordinating Council (WECC) NERC region.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
6.4K MWh
Latest Month
108.5K MWh
Annual Generation
52.8%
Capacity Factor
2013
$2,294/kW
Est. Construction Cost
Total estimated cost: $53.7M
This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
Last updated 2026-03-14
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ask pi about Gem StatePacifiCorp - East (PACE)
Grid Voltage
161.0 kV
Regulatory Status
RE — Regulated
Entity Type
Municipal
Sector
Electric Utility