Mainline Windfarm
6000 N Foxtail Way, Glenns Ferry, ID 83623Plant Summary Information
Mainline Windfarm is ranked #18 out of 33 wind farms in Idaho in terms of total annual net electricity generation.
Mainline Windfarm generated 12.2 GWh during the 3-month period between September 2025 to December 2025.
| Plant Name | Mainline Windfarm |
|---|---|
| Utility Name | Mountain Air Projects, LLC |
| Location | Elmore County, ID |
| Initial Operation Date | December 2012 |
| Last Update | Dec 2025 |
| Annual Generation | 52.2 GWh |
| Annual Consumption | 192.9 k MMBtu |
| Ranked #4,157 out of 13,081 Power Plants Nationwide | |
| Ranked #1,018 out of 1,366 Wind Power Plants Nationwide | |
| Ranked #56 out of 142 Idaho Power Plants | |
| Ranked #18 out of 33 Idaho Wind Power Plants | |
| Fuel Types | Wind |
| Previous Operator |
Aegis Renewables LLC (2013 to 2020) Mountain Air Projects, LLC (2021 to 2025) |
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Monthly Net Generation for Mainline Windfarm
Monthly Plant Fuel Consumption for Mainline Windfarm
Mainline Windfarm Details
| Summary Information | |
|---|---|
| Plant Name | Mainline Windfarm (57429) |
| Plant Address | 6000 N Foxtail Way, Glenns Ferry, ID 83623 |
| Utility | Mountain Air Projects, LLC (64742) |
| Latitude, Longitude | 43.04835, -115.41289 |
| Generation Dates on File | Dec 2012 to Dec 2025 |
| Initial Operation Date | December 2012 |
| Annual Generation | 52.2 GWh |
| Fuel Types | Wind |
| Federal Energy Regulatory Commission (FERC) Information | |
| FERC Cogeneration Status | No |
| FERC Small Power Producer Status | Yes |
| FERC Small Power Producer Docket Number | 10-527 |
| FERC Exempt Wholesale Generator Status | No |
| Regulatory Information | |
|---|---|
| Regulatory Status | Non-Regulated |
| NERC Region | WECC |
| Balancing Authority | Idaho Power Company (IPCO) |
| NAICS Code | Utilities (22) |
| Sector | IPP Non-CHP (2) |
| Water Source | |
| Ash Impoundment | |
| Transmission / Distribution Owner | Idaho Power Co (9191) ID |
| Grid Voltage | 230.00 kV |
| Energy Storage | No |
Generator 1 Details Operating December 2012
| Technology | Onshore Wind Turbine |
|---|---|
| Prime Mover | Wind Turbine, Onshore |
| Ownership | Single Owner |
| Nameplate Capacity | 23 MW |
| Summer Capacity | 23 MW |
| Winter Capacity | 23 MW |
| Minimum Load | 1 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | December 2012 |
| Combined Heat & Power | No |
| Sector Name | IPP Non-CHP (2) |
| Energy Source | Wind |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Turbines/Hydrokinetic Buoys | 10 |
| Turbine Details | |
| Number Of Turbines | 10 |
|---|---|
| Predominant Turbine Manufacturer | Siemens |
| Predominant Turbine Model Number | SWT-2.3-101 |
| Design Wind Speed | 13.4 MPH |
| Wind Quality Class | 2 - Medium Wind |
| Turbine Hub Height Feet | 262.4 |
Mainline Windfarm Plant Owners
| Owner Name | Address | Ownership | We couldn't locate any owners for this plant |
|---|
Power Plants with Similar Net Generation
Power plants with a similar annual net generation from Wind.
| Rank | Plant Name | Plant Location | Annual Generation |
|---|---|---|---|
| #1008 | Vansycle | Touchet, OR | 54.9 GWh |
| #1009 | Forward Windpower LLC | Berlin, PA | 54.8 GWh |
| #1010 | South Fork Wind Farm | Round Lake, MN | 54.4 GWh |
| #1011 | Desert Meadow Windfarm | Glenns Ferry, ID | 54.3 GWh |
| #1012 | Carroll Area Wind Farm | Templeton, IA | 53.8 GWh |
| #1013 | Rising Tree Wind Farm II | Mojave, CA | 53.7 GWh |
| #1014 | Taconite Ridge 1 Wind Energy Center | Mountain Iron, MN | 53.1 GWh |
| #1015 | Hammett Hill Windfarm | Glenns Ferry, ID | 53.1 GWh |
| #1016 | Grant County Wind LLC | Woodstock, MN | 52.9 GWh |
| #1017 | Spruce Mountain WInd | Bryant Pond, ME | 52.6 GWh |
| #1019 | San Gorgonio Farms Wind Farm | Whitewater, CA | 51.7 GWh |
| #1020 | McKinley Wind Park | Pigeon, MI | 51.4 GWh |
| #1021 | Montfort Wind Energy Center | Montfort, WI | 51.3 GWh |
| #1022 | Milner Dam Wind Park LLC | Burley, ID | 50.5 GWh |
| #1023 | Sawtooth Wind Project | Glenns Ferry, ID | 49.9 GWh |
| #1024 | Fire Island Wind | Anchorage, AK | 49.8 GWh |
| #1025 | Mozart Wind Farm | Jayton, TX | 49.5 GWh |
| #1026 | Oasis Alta | Mojave, CA | 49.3 GWh |
| #1027 | Ryegrass Windfarm | Glenns Ferry, ID | 48.7 GWh |
| #1028 | Coastal Virginia Offshore Wind (CVOW) Pi | Virginia Beach, VA | 48.4 GWh |
Nearby Power Plants
Below are closest 20 power plants surrounding Mainline Windfarm.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| Anderson Ranch | Mountain Home, ID | 85.8 GWh | 21.4 mi |
| Bennett Creek Windfarm LLC - Mountain Home | Mountain Home, ID | 36.6 GWh | 3.4 mi |
| Bennett Mountain | Mountain Home, ID | 999.1 GWh | 14.5 mi |
| Black Mesa Solar, LLC | King Hill, ID | 90.4 GWh | 15.2 mi |
| Bliss (ID) | Bliss, ID | 297.7 GWh | 19.6 mi |
| Camp Reed | Glenns Ferry, ID | 59.0 GWh | 24.6 mi |
| Cassia Gulch | Hagerman, ID | 35.0 GWh | 23.3 mi |
| Cassia Wind | Hagerman, ID | 17.2 GWh | 23.7 mi |
| Cold Springs Windfarm | Glenns Ferry, ID | 46.6 GWh | 1.5 mi |
| Desert Meadow Windfarm | Glenns Ferry, ID | 54.3 GWh | 2.1 mi |
| Evander Andrews Power Complex | Mountain Home, ID | 926.4 GWh | 18.6 mi |
| Hammett Hill Windfarm | Glenns Ferry, ID | 53.1 GWh | 3.9 mi |
| High Mesa | King Hill, ID | 68.4 GWh | 22.3 mi |
| Mountain Home | Mountain Home, ID | 31.2 GWh | 3 mi |
| Mt. Home Solar 1, LLC | Pocatello, ID | 48.5 GWh | 18 mi |
| Payne's Ferry | Hagerman, ID | 59.2 GWh | 25.5 mi |
| Ryegrass Windfarm | Glenns Ferry, ID | 48.7 GWh | 1.6 mi |
| Sawtooth Wind Project | Glenns Ferry, ID | 49.9 GWh | 4.7 mi |
| Tuana Springs | Hagerman, ID | 27.1 GWh | 22.8 mi |
| Two Ponds Windfarm | Glenns Ferry, ID | 55.2 GWh | 3.7 mi |