Madison Dam
950 Ennis Lake Road, Ennis, MT 59729Plant Summary Information
Madison Dam is ranked #40 out of 69 power plants in Montana in terms of total annual net electricity generation.
Madison Dam is comprised of 4 generators and generated 17.1 GWh during the 3-month period between June 2023 to September 2023.
| Plant Name | Madison Dam |
|---|---|
| Utility Name | NorthWestern Energy (MT Hydro) |
| Location | Madison County, MT |
| Initial Operation Date | September 1906 |
| Last Update | Sep 2023 |
| Annual Generation | 69.9 GWh |
| Annual Consumption | 253.8 k MMBtu |
| Ranked #3,544 out of 11,835 Power Plants Nationwide | |
| Ranked #433 out of 1,371 Water Power Plants Nationwide | |
| Ranked #40 out of 69 Montana Power Plants | |
| Ranked #16 out of 23 Montana Water Power Plants | |
| Fuel Types | Water |
| Previous Operators |
PPL Montana LLC (2013 to 2013) NorthWestern Energy (2014 to 2020) NorthWestern Energy (MT hdro) (2021 to 2021) NorthWestern Energy (MT Hydro) (2022 to 2023) |
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Monthly Net Generation for Madison Dam
Madison Dam Details
| Summary Information | |
|---|---|
| Plant Name | Madison Dam (6422) |
| Plant Address | 950 Ennis Lake Road, Ennis, MT 59729 |
| Utility | NorthWestern Energy (MT Hydro) (13902) |
| Latitude, Longitude | 45.48787, -111.63381 |
| Generation Dates on File | Jan 2001 to Sep 2023 |
| Initial Operation Date | September 1906 |
| Annual Generation | 69.9 GWh |
| Fuel Types | Water |
| Federal Energy Regulatory Commission (FERC) Information | |
| FERC Cogeneration Status | No |
| FERC Small Power Producer Status | No |
| FERC Exempt Wholesale Generator Status | Yes |
| FERC Exempt Wholesale Generator Docket Number | 99-185-000 |
| Regulatory Information | |
|---|---|
| Regulatory Status | Regulated |
| NERC Region | WECC |
| Balancing Authority | NorthWestern Energy (NWMT) (NWMT) |
| NAICS Code | Utilities (22) |
| Sector | Electric Utility (1) |
| Water Source | Madison River |
| Ash Impoundment | No |
| Transmission / Distribution Owner | NorthWestern Energy LLC - (MT) (12825) MT |
| Grid Voltage | 100.00 kV |
| Energy Storage | No |
Generator MAD5 Details Operating December 2021
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 4.1 MW |
| Nameplate Power Factor | 0.9 |
| Summer Capacity | 4.1 MW |
| Winter Capacity | 4.1 MW |
| Minimum Load | 0.5 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | December 2021 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Water |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | 1H |
Generator MAD6 Details Operating December 2021
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 4.1 MW |
| Nameplate Power Factor | 0.9 |
| Summer Capacity | 4.1 MW |
| Winter Capacity | 4.1 MW |
| Minimum Load | 0.5 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | December 2021 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Water |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | 1H |
Generator MAD7 Details Operating January 2022
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 4.1 MW |
| Nameplate Power Factor | 0.9 |
| Summer Capacity | 4.1 MW |
| Winter Capacity | 4.1 MW |
| Minimum Load | 0.5 MW |
| Uprate/Derate Completed | No |
|---|---|
| Status | Operating |
| First Operation Date | January 2022 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Water |
| Time From Cold Shutdown To Full Load | 1H |
Generator MAD8 Details Operating March 2022
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 4.1 MW |
| Nameplate Power Factor | 0.9 |
| Summer Capacity | 4.1 MW |
| Winter Capacity | 4.1 MW |
| Minimum Load | 0.5 MW |
| Uprate/Derate Completed | No |
|---|---|
| Status | Operating |
| First Operation Date | March 2022 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Water |
| Time From Cold Shutdown To Full Load | 1H |
Madison Dam Plant Owners
| Owner Name | Address | Generator | 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 Water.
| Rank | Plant Name | Plant Location | Annual Generation |
|---|---|---|---|
| #423 | Allegheny Hydro No 8 | Adrian, PA | 73.2 GWh |
| #424 | Buffalo Bill | Cody, WY | 73.2 GWh |
| #425 | Rollins | Colfax, CA | 73.1 GWh |
| #426 | Cornell | Chippewa Falls, WI | 72.9 GWh |
| #427 | Grace | Grace, ID | 72.9 GWh |
| #428 | Twin Cities Hydro LLC | St. Paul, MN | 71.6 GWh |
| #429 | Copco 1 | Hornbrook, CA | 71.4 GWh |
| #430 | Swan Lake | Ketchikan, AK | 70.6 GWh |
| #431 | Pejepscot Hydroelectric Project | Topsham, ME | 70.6 GWh |
| #432 | Lloyd Shoals | Jackson, GA | 70.3 GWh |
| #434 | Nimbus | Folsom, CA | 69.9 GWh |
| #435 | Ocoee 1 | Benton, TN | 69.8 GWh |
| #436 | Blake | Parishville, NY | 69.8 GWh |
| #437 | Hydro Kennebec Project | Winslow, ME | 69.6 GWh |
| #438 | Mojave Siphon | Hesperia, CA | 69.6 GWh |
| #439 | E J West | Lake Luzerne, NY | 69.4 GWh |
| #440 | Deer Rips | Auburn, ME | 69.3 GWh |
| #441 | Robbs Peak | Fresh Pond, CA | 69.1 GWh |
| #442 | San Francisquito 2 | Saugus, CA | 69.0 GWh |
| #443 | Deferiet | Deferiet, NY | 68.6 GWh |
Nearby Power Plants
Below are closest 20 power plants surrounding Madison Dam.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| Apex Solar | Dillon, MT | 151.7 GWh | 56.7 mi |
| Ashton | Ashton, ID | 30.2 GWh | 97.6 mi |
| Basin Creek Plant | Butte, MT | 179.3 GWh | 52.5 mi |
| Big Timber Wind Farm | Big Timber, MT | 68.2 GWh | 99.1 mi |
| Broadwater Power Project | Toston, MT | 39.4 GWh | 45.1 mi |
| Canyon Ferry | Helena, MT | 276.5 GWh | 80.4 mi |
| Chester Diversion Hydroelectric Project | Chester, ID | 7.7 GWh | 101.6 mi |
| Dave Gates Generating Station | Anaconda, MT | 483.4 GWh | 73.5 mi |
| Falls River Hydro | Ashton, ID | 44.2 GWh | 99.6 mi |
| Flint Creek Hydroelectric LLC | Philipsburg, MT | 11.0 GWh | 94.9 mi |
| Gordon Butte Wind LLC | Martinsdale, MT | 66.5 GWh | 89.2 mi |
| Great Divide Solar, LLC | Canyon Creek, MT | 6.2 GWh | 95.7 mi |
| Green Meadow Solar, LLC | Helena, MT | 5.6 GWh | 85.9 mi |
| Hauser | Helena, MT | 142.8 GWh | 89.1 mi |
| Holter | Wolf Creek, MT | 281.6 GWh | 105.4 mi |
| Island Park | Island Park, ID | 16.3 GWh | 74.8 mi |
| Lake (WY) | Yellowstone, WY | 252.0 MWh | 90.4 mi |
| Mystic | Fishtail, MT | 62.3 GWh | 92.6 mi |
| Old Faithful | Yellowstone, WY | 249.0 MWh | 81.5 mi |
| Two Dot Wind Farm | Two Dot, MT | 33.1 GWh | 99.6 mi |