South Mills Solar, LLC
170 S. Mills Road, Hardin, MT 59034Plant Summary Information
South Mills Solar, LLC is ranked #6 out of 9 solar farms in Montana in terms of total annual net electricity generation.
South Mills Solar, LLC generated 564.0 MWh during the 3-month period between September 2025 to December 2025.
| Plant Name | South Mills Solar, LLC |
|---|---|
| Utility Name | Adapture Renewables, Inc. |
| Location | Big Horn County, MT |
| Initial Operation Date | April 2017 |
| Last Update | Dec 2025 |
| Annual Generation | 4.9 GWh |
| Annual Consumption | 17.3 k MMBtu |
| Ranked #8,120 out of 12,613 Power Plants Nationwide | |
| Ranked #3,267 out of 6,463 Solar Power Plants Nationwide | |
| Ranked #63 out of 71 Montana Power Plants | |
| Ranked #6 out of 9 Montana Solar Power Plants | |
| Fuel Types | Solar |
| Previous Operator |
Enerparc Inc. (2016 to 2019) Adapture Renewables, Inc. (2020 to 2024) |
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Monthly Net Generation for South Mills Solar, LLC
Monthly Plant Fuel Consumption for South Mills Solar, LLC
South Mills Solar, LLC Details
| Summary Information | |
|---|---|
| Plant Name | South Mills Solar, LLC (61290) |
| Plant Address | 170 S. Mills Road, Hardin, MT 59034 |
| Utility | Adapture Renewables, Inc. (60496) |
| Latitude, Longitude | 45.73011, -107.63262 |
| Generation Dates on File | Apr 2017 to Dec 2025 |
| Initial Operation Date | April 2017 |
| Annual Generation | 4.9 GWh |
| Fuel Types | Solar |
| Federal Energy Regulatory Commission (FERC) Information | |
| FERC Cogeneration Status | No |
| FERC Small Power Producer Status | Yes |
| FERC Small Power Producer Docket Number | 15-408-000 |
| FERC Exempt Wholesale Generator Status | No |
| Regulatory Information | |
|---|---|
| Regulatory Status | Non-Regulated |
| NERC Region | WECC |
| Balancing Authority | NorthWestern Energy (NWMT) (NWMT) |
| NAICS Code | Utilities (22) |
| Sector | IPP Non-CHP (2) |
| Water Source | |
| Ash Impoundment | No |
| Transmission / Distribution Owner | NorthWestern Energy LLC - (MT) (12825) MT |
| Grid Voltage | 12.40 kV |
| Energy Storage | No |
Generator SMSMT Details Operating April 2017
| Technology | Solar Photovoltaic |
|---|---|
| Prime Mover | Photovoltaic |
| Ownership | Single Owner |
| Nameplate Capacity | 3 MW |
| Summer Capacity | 3 MW |
| Winter Capacity | 3 MW |
| Uprate/Derate Completed | No |
|---|---|
| Status | Operating |
| First Operation Date | April 2017 |
| Combined Heat & Power | No |
| Sector Name | IPP Non-CHP (2) |
| Energy Source | Solar |
| Solar Details | |
| Single Axis Tracking | Yes |
|---|---|
| Azimuth Angle | 90 |
| Tilt Angle | 45 |
| DC Net Capacity | 4.2 MW |
| Crystalline Silicon | Yes |
| Net Metering Agreement | No |
| Virtual Net Metering Agreement | No |
South Mills Solar, LLC Plant Owners
| Owner Name | Address | Ownership | We couldn't locate any owners for this plant |
|---|
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| #3275 | Viking Solar CSG | Palmyra, IL | 4.9 GWh |
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Nearby Power Plants
Below are closest 20 power plants surrounding South Mills Solar, LLC.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| Beaver Creek Wind Facility | Big Timber, MT | 161.3 GWh | 91.1 mi |
| Clearwater Wind I | Miles City, MT | 1.3 TWh | 96.1 mi |
| Colstrip | Colstrip, MT | 9.2 TWh | 50.2 mi |
| Colstrip Energy LP | Colstrip, MT | 287.5 GWh | 50 mi |
| Elk Basin Gasoline Plant | Powell, WY | 6.7 GWh | 78.3 mi |
| Garland Canal Power Plant | Powell, WY | 8.8 GWh | 91.7 mi |
| Hardin Generator Project | Hardin, MT | 481.0 GWh | 2.5 mi |
| Magpie Solar, LLC | Lavina, MT | 4.9 GWh | 73.7 mi |
| MTSUN | Billings, MT | 149.0 GWh | 47.5 mi |
| Musselshell Wind Project | Shawmut, MT | 23.1 GWh | 96.5 mi |
| Musselshell Wind Project Two LLC | Shawmut, MT | 26.5 GWh | 96.5 mi |
| Pryor Mountain Wind | Bridger, MT | 750.8 GWh | 64.5 mi |
| River Bend Solar, LLC (MT) | Reed Point, MT | 3.1 GWh | 93.2 mi |
| South Dry Creek Hydro | Red Lodge, MT | 3.8 GWh | 82.6 mi |
| Stillwater Wind, LLC | Reed Point, MT | 252.7 GWh | 89.3 mi |
| Two Dot Wind Broadview East LLC | Broadview, MT | 4.2 GWh | 62 mi |
| Western Sugar Cooperative - Billings | Billings, MT | 5.3 GWh | 41.9 mi |
| Yellowstone County Generating Station | Laurel, MT | 383.4 GWh | 54.7 mi |
| Yellowstone Energy LP | Billings, MT | 458.4 GWh | 38.7 mi |
| Yellowtail | Hardin, MT | 798.4 GWh | 33.2 mi |