Mossyrock
418 Gershick Road, Silver Creek, WA 98585Plant Summary Information
Mossyrock is ranked #25 out of 131 power plants in Washington in terms of total annual net electricity generation.
Mossyrock is comprised of 2 generators and generated 389.1 GWh during the 3-month period between December 2023 to March 2024.
| Plant Name | Mossyrock |
|---|---|
| Utility Name | City of Tacoma - (WA) |
| Location | Lewis County, WA |
| Initial Operation Date | October 1968 |
| Last Update | Mar 2024 |
| Annual Generation | 853.1 GWh |
| Annual Consumption | 2.9 M MMBtu |
| Ranked #856 out of 11,249 Power Plants Nationwide | |
| Ranked #55 out of 1,354 Water Power Plants Nationwide | |
| Ranked #25 out of 131 Washington Power Plants | |
| Ranked #13 out of 69 Washington Water Power Plants | |
| Fuel Types | Water |
| Previous Operator |
City of Tacoma - (WA) (2013 to 2015) City of Tacoma - (WA) (2016 to 2022) |
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Monthly Net Generation for Mossyrock
Mossyrock Details
| Summary Information | |
|---|---|
| Plant Name | Mossyrock (3918) |
| Plant Address | 418 Gershick Road Silver Creek, WA 98585 |
| Utility | City of Tacoma - (WA) (18429) |
| Latitude, Longitude | 46.5347, -122.4247 |
| Generation Dates on File | Jan 2001 to Mar 2024 |
| Initial Operation Date | October 1968 |
| Annual Generation | 853.1 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 | No |
| Regulatory Information | |
|---|---|
| Regulatory Status | Regulated |
| NERC Region | WECC |
| Balancing Authority | City of Tacoma, Department of Public Utilities, Light Division (TPWR) |
| NAICS Code | Utilities (22) |
| Sector | Electric Utility (1) |
| Water Source | Cowlitz River |
| Ash Impoundment | No |
| Transmission / Distribution Owner | City of Tacoma - (WA) (18429) WA |
| Grid Voltage | 240.00 kV |
| Energy Storage | No |
Generator 52 Details Operating October 1968
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 150 MW |
| Nameplate Power Factor | 1 |
| Summer Capacity | 157 MW |
| Winter Capacity | 147 MW |
| Minimum Load | 85 MW |
| Uprate/Derate Completed | No |
|---|---|
| Status | Operating |
| First Operation Date | October 1968 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Water |
| Time From Cold Shutdown To Full Load | 1H |
Generator 51 Details Operating November 1968
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 150 MW |
| Nameplate Power Factor | 1 |
| Summer Capacity | 186 MW |
| Winter Capacity | 175.3 MW |
| Minimum Load | 100 MW |
| Uprate/Derate Completed | No |
|---|---|
| Status | Operating |
| First Operation Date | November 1968 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Water |
| Time From Cold Shutdown To Full Load | 1H |
Mossyrock 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 |
|---|---|---|---|
| #45 | Selis Ksanka Qlispe | Polson, MT | 1.1 TWh |
| #46 | Wolf Creek | Jamestown, KY | 1.0 TWh |
| #47 | Watts Bar Hydro | Spring City, TN | 1.0 TWh |
| #48 | Keokuk | Keokuk, IA | 988.5 GWh |
| #49 | Holtwood | Holtwood, PA | 985.1 GWh |
| #50 | Sidney A Murray Jr Hydroelectric | Vidalia, LA | 978.0 GWh |
| #51 | Collierville Powerhouse | Murphys, CA | 923.1 GWh |
| #52 | Folsom | Folsom, CA | 904.8 GWh |
| #53 | Fort Loudoun | Lenoir City, TN | 874.1 GWh |
| #54 | Big Bend Dam | Chamberlain, SD | 872.9 GWh |
| #56 | Mayfield | Silver Creek, WA | 850.5 GWh |
| #57 | Round Butte | Madras, OR | 835.7 GWh |
| #58 | Fort Peck | Fort Peck, MT | 813.6 GWh |
| #59 | White Rock/Slab Creek | Placerville, CA | 806.0 GWh |
| #60 | Oxbow (OR) | Oxbow, OR | 780.9 GWh |
| #61 | Gorge | Rockport, WA | 776.7 GWh |
| #62 | Pine Flat | Piedra, CA | 759.1 GWh |
| #63 | Gavins Point | Crofton, NE | 752.5 GWh |
| #64 | Chickamauga | Chattanooga, TN | 750.1 GWh |
| #65 | Pit 5 | Big Bend, CA | 738.8 GWh |
Nearby Power Plants
Below are closest 20 power plants surrounding Mossyrock.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| Alder | La Grande, WA | 250.8 GWh | 19.2 mi |
| Chehalis Generating Facility | Chehalis, WA | 2.5 TWh | 24 mi |
| Cowlitz Falls | Randle, WA | 262.3 GWh | 15.7 mi |
| Frederickson | Tacoma, WA | 54.1 GWh | 37.8 mi |
| Frederickson Power LP | Tacoma, WA | 1.3 TWh | 38.2 mi |
| LaGrande | La Grande, WA | 381.5 GWh | 21.2 mi |
| Longview Fibre | Longview, WA | 228.9 GWh | 38 mi |
| LRI LFGTE Facility | Graham, WA | 34.1 GWh | 31.1 mi |
| Mayfield | Silver Creek, WA | 850.5 GWh | 8.1 mi |
| Merwin | Ariel, WA | 539.2 GWh | 40.4 mi |
| Mint Farm Generating Station | Longview, WA | 1.7 TWh | 38.3 mi |
| Nippon Dynawave Packaging Longview WA | Longview, WA | 310.7 GWh | 38.6 mi |
| Packwood | Packwood, WA | 97.7 GWh | 40.8 mi |
| Port Westward Unit 2 | Clatskanie, OR | 770.0 GWh | 43.3 mi |
| Skookumchuck | Tenino, WA | 4.7 GWh | 22.2 mi |
| Skookumchuck Wind Facility | Rainier, WA | 448.3 GWh | 24.6 mi |
| Swift 1 | Cougar, WA | 614.4 GWh | 34.4 mi |
| Transalta Centralia Generation | Centralia, WA | 4.1 TWh | 25.7 mi |
| Yale | Amboy, WA | 585.1 GWh | 39.7 mi |
| Yelm | Yelm, WA | 3.8 GWh | 32 mi |