Langley Gulch Power Plant

Interstate 84 and Highway 30, New Plymouth, ID 83655

Plant Summary Information

Langley Gulch Power Plant is ranked #2 out of 141 power plants in Idaho in terms of total annual net electricity generation.

Langley Gulch Power Plant is comprised of 2 generators and generated 403.4 GWh during the 3-month period between September 2025 to December 2025.

Plant Name	Langley Gulch Power Plant
Utility Name	Idaho Power Co
Location	Payette County, ID
Initial Operation Date	June 2012
Last Update	Dec 2025
Annual Generation	1.8 TWh
Annual Consumption	14.5 M MMBtu
Ranked #553 out of 12,613 Power Plants Nationwide
Ranked #341 out of 2,246 Natural Gas Power Plants Nationwide
Ranked #2 out of 141 Idaho Power Plants
Ranked #1 out of 9 Idaho Natural Gas Power Plants
Fuel Types	Natural Gas

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Summary Information
Plant Name	Langley Gulch Power Plant (57028)
Plant Address	Interstate 84 and Highway 30, New Plymouth, ID 83655
Utility	Idaho Power Co (9191)
Latitude, Longitude	43.90444, -116.81972
Generation Dates on File	Jun 2012 to Dec 2025
Initial Operation Date	June 2012
Annual Generation	1.8 TWh
Fuel Types	Natural Gas

Federal Energy Regulatory Commission (FERC) Information
FERC Cogeneration Status	No
FERC Small Power Producer Status	No
FERC Exempt Wholesale Generator Status	No

Regulatory Information
Regulatory Status	Regulated
NERC Region	WECC
Balancing Authority	Idaho Power Company (IPCO)
NAICS Code	Utilities (22)
Sector	Electric Utility (1)
Water Source	Snake River Plain Aquifer Well
Ash Impoundment	No
Transmission / Distribution Owner	Idaho Power Co (9191) ID
Grid Voltage	230.00 kV
Energy Storage	No

Natural Gas Information
Pipeline Name	NORTHWEST PIPELINE GP
Natural Gas Storage	No
Liquefied Natural Gas Storage	No

* Data obtained from the 2024 EIA 860 Report

Technology	Natural Gas Fired Combined Cycle
Prime Mover	Combined Cycle Combustion Turbine Part
Unit Code	LG1
Ownership	Single Owner
Can Bypass Heat Recovery Steam Generator	No
RTO ISO LMP Node Designation	LGPR_2_G011_G012-APND
RTO ISO Location Designation For Reporting Wholesale Sales Data	LGPR_2_G011_G012
Nameplate Capacity	187 MW
Nameplate Power Factor	0.85
Summer Capacity	186.77 MW
Winter Capacity	202.21 MW
Minimum Load	120 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	June 2012
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Natural Gas
Startup Source	Natural Gas
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No
Cofire Fuels	No

Technology	Natural Gas Fired Combined Cycle
Prime Mover	Combined Cycle Steam Part
Unit Code	LG1
Ownership	Single Owner
Duct Burners	Yes
RTO ISO LMP Node Designation	LGPR_2_G011_G012-APND
RTO ISO Location Designation For Reporting Wholesale Sales Data	LGPR_2_G011_G012
Nameplate Capacity	131.5 MW
Nameplate Power Factor	0.85
Summer Capacity	118.66 MW
Winter Capacity	99.42 MW
Minimum Load	23.7 MW

Uprate/Derate Completed	No
Status	Operating
First Operation Date	June 2012
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Natural Gas
Startup Source	Natural Gas
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	12H
Multiple Fuels	No
Cofire Fuels	No

Owner Name	Address	Generator	Ownership
*We couldn't locate any owners for this plant*

Power plants with a similar annual net generation from Natural Gas.

Rank	Plant Name	Plant Location	Annual Generation
#331	Noblesville	Noblesville, IN	1.8 TWh
#332	C D McIntosh Jr	Lakeland, FL	1.8 TWh
#333	Rockingham County CT Station	Reidsville, NC	1.8 TWh
#334	Salem Harbor Power Development LP	Salem, MA	1.8 TWh
#335	Cunningham	Hobbs, NM	1.8 TWh
#336	E C Gaston	Wilsonville, AL	3.8 TWh
#337	Watson Cogeneration	Carson, CA	2.3 TWh
#338	Mystic Generating Station	Charlestown, MA	1.8 TWh
#339	Sutter Energy Center	Yuba City, CA	1.8 TWh
#340	Texas City Power Plant	Texas City, TX	1.8 TWh
#342	Hopewell Cogeneration	Hopewell, VA	1.8 TWh
#343	Apache Station	Cochise, AZ	2.2 TWh
#344	Treasure Coast Energy Center	Ft. Pierce, FL	1.7 TWh
#345	St Francis Energy Facility	Campbell, MO	1.7 TWh
#346	Nichols	Amarillo, TX	1.7 TWh
#347	Frederickson Power LP	Tacoma, WA	1.7 TWh
#348	Freeport Energy	Freeport, TX	1.7 TWh
#349	La Paloma Generating Plant	McKittrick, CA	1.7 TWh
#350	Beaver	Clatskanie, OR	1.7 TWh
#351	West Lorain	Lorain, OH	1.7 TWh

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Hidden Hollow Energy	Boise, ID	18.1 GWh	30.9 mi
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Hyline Solar Center, LLC	Ontario, OR	20.3 GWh	19.3 mi
Michell Butte Power Project	Nyssa, OR	5.3 GWh	19.1 mi
Mora Drop Hydroelectric Project	Kuna, ID	4.3 GWh	35.3 mi
Morgan Solar Center	Ontario, OR	6.5 GWh	13.1 mi
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Ontario Solar Center	Ontario, OR	6.8 GWh	17.7 mi
Open Range Solar Center, LLC	Nyssa, OR	22.0 GWh	14.3 mi
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Vale Solar Center	Ontario, OR	5.5 GWh	35.6 mi
Verde Light Community Solar	Ontario, OR	6.7 GWh	12.9 mi