Gem State — Plant Summary
- EIA Plant ID
- 790
- Capacity
- 23.4 MW
- Primary Fuel
- Hydro
- Technology
- Conventional Hydroelectric
- Status
- Operating
- Location
- Bonneville, ID
- Operating Since
- 1988
- Generators
- 1
- Operator
- City of Idaho Falls - (ID)
- Parent Company
- —
- Annual Generation
- 108,516 MWh
- Capacity Factor
- 52.8%
- Balancing Authority
- PacifiCorp - East
- ISO/RTO
- —
- NERC Region
- WECC
Gem State
OperatingHydro
Ranked #19 of 76 Hydro plants in ID#451 of 1454 nationally
23.4 MW Hydro operating in Bonneville, ID — PacifiCorp - East
EIAWD
23.4 MW
Nameplate Capacity
1
Generators
unit
Conventional Hydroelectric
Technology
1988
Operating Since
Location
Coordinates
43.4202, -112.1019
County
Bonneville, ID
Nearby Plants
- Lower No 2Hydro3 MW · 6.2 km
- Lower No 1Hydro8 MW · 6.3 km
- Cedar Creek Wind, LLCWind160 MW · 10.9 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | City of Idaho Falls - (ID) | — | — |
| Owner(s) | City of Idaho Falls - (ID) | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
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
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
PacifiCorp - East
Grid Voltage
161 kV
Regulatory Status
RE
Entity Type
Municipal
Sector
Electric Utility
Generation
6.4K MWh
Latest Month
108.5K MWh
Annual Generation
52.8%
Capacity Factor
Jan 2022 – Dec 2024
Financial Data
No financial data available for this plant.
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (10)Beta
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Last updated 2026-03-14
View all 10 articles