Bennett Mountain — Plant Summary
- EIA Plant ID
- 55733
- Capacity
- 172.8 MW
- Primary Fuel
- Natural Gas
- Technology
- Natural Gas Fired Combustion Turbine
- Status
- Operating
- Location
- Elmore, ID
- Operating Since
- 2005
- Generators
- 1
- Operator
- Idaho Power Co
- Parent Company
- IDACORP
- Annual Generation
- 919,148 MWh
- Capacity Factor
- 60.4%
- Balancing Authority
- Idaho Power Company
- ISO/RTO
- —
- NERC Region
- WECC
Bennett Mountain
OperatingNatural Gas
Ranked #4 of 9 Natural Gas plants in ID#789 of 2009 nationally
172.8 MW Natural Gas operating in Elmore, ID — Idaho Power Company
EIAWD
172.8 MW
Nameplate Capacity
1
Generators
unit
Natural Gas Fired Combustion Turbine
Technology
2005
Operating Since
Location
Coordinates
43.1470, -115.6670
County
Elmore, ID
Nearby Plants
- Elmore BESSBESS4 MW · 5.3 km
- Evander Andrews Power ComplexNatural Gas270.9 MW · 6.5 km
- Mt. Home Solar 1, LLCSolar20 MW · 7.2 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Idaho Power Co | Idaho Power | — |
| Owner(s) | Idaho Power Co | IDACORP | — |
| Status | Operating | — | — |
Ownership Chain
About
Bennett Mountain is a 172.8 MW natural gas-fired power plant located in Elmore County, Idaho. The plant began operating in 2005 and has one natural gas-fired combustion turbine generator. It is owned by IDACORP and operated by Idaho Power Company. The plant is located within the Idaho Power Company balancing authority and the Western Electricity Coordinating Council (WECC) NERC region.
In the most recent year with available data, Bennett Mountain generated 919,148 MWh of electricity, achieving a capacity factor of 60.4%. The plant ranks fourth out of five power plants in Idaho and 787th out of 945 nationally. Financial data indicates an installed cost of $310.65 per kW, based on FERC filings.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Idaho Power Company
Grid Voltage
230 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
114.3K MWh
Latest Month
919.1K MWh
Annual Generation
60.4%
Capacity Factor
Jan 2022 – Dec 2024
Financial DataBeta
Source: FERC Form 1HIGH
$391/kW
Installed Cost
$52.1/MWh
Operating Cost
Idaho Power Company
Reporting Utility
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Pricing & Market Data
Market Position
LMP Node
BMPR_GNODE011
Pricing Hub
—
News & Articles (3)Beta
Regulatory·permitting
Idaho Power Company; Notice of Intent To File License Application, Filing of Pre-Application Document, and Approving Use of the Traditional Licensing Process
Idaho Power Company (applicant)
Federal Register (FERC)·3 days ago
Industry·corporate
Idaho Power plans more generation via natural gas
Idaho Power plans to expand one natural gas-fired plant in southwest Idaho and build another as customer growth continues.
Idaho Power (operator)
Capital Press·4 weeks ago
Industry·corporate
PSPPs provide half of capacity of under-construction and announced hydropower plants, study says
The share of pumped storage power plants (PSPPs) in the global capacity structure of HPPs of all types that are undergoing construction and planning reached 49...
The Global Energy Association·2 years ago
Last updated 2026-03-25
View all articles