Lower Granite
885 Almota Ferry Road, Pomeroy, WA 99347Plant Summary Information
Lower Granite is ranked #30 out of 1,323 hydroelectric power plants nationwide in terms of total annual net electricity generation.
Lower Granite is comprised of 6 generators and generated 588.1 GWh during the 3-month period between December 2024 to March 2025.
| Plant Name | Lower Granite |
|---|---|
| Utility Name | USACE Northwestern Division |
| Location | Whitman County, WA |
| Initial Operation Date | April 1975 |
| Last Update | Mar 2025 |
| Annual Generation | 1.4 TWh |
| Annual Consumption | 5.4 M MMBtu |
| Ranked #619 out of 12,288 Power Plants Nationwide | |
| Ranked #30 out of 1,323 Water Power Plants Nationwide | |
| Ranked #20 out of 131 Washington Power Plants | |
| Ranked #11 out of 68 Washington Water Power Plants | |
| Fuel Types | Water |
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Monthly Net Generation for Lower Granite
Lower Granite Details
| Summary Information | |
|---|---|
| Plant Name | Lower Granite (6175) |
| Plant Address | 885 Almota Ferry Road, Pomeroy, WA 99347 |
| Utility | USACE Northwestern Division (19400) |
| Latitude, Longitude | 46.6595, -117.42939 |
| Generation Dates on File | Jan 2001 to Mar 2025 |
| Initial Operation Date | April 1975 |
| Annual Generation | 1.4 TWh |
| 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 | Bonneville Power Administration (BPAT) |
| NAICS Code | Utilities (22) |
| Sector | Electric Utility (1) |
| Water Source | Snake And Columbia Rivers |
| Ash Impoundment | No |
| Transmission / Distribution Owner | Bonneville Power Administration (1738) WA |
| Grid Voltage | 500.00 kV |
| Energy Storage | No |
Generator 1 Details Operating April 1975
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 135 MW |
| Nameplate Power Factor | 0.95 |
| Summer Capacity | 135 MW |
| Winter Capacity | 135 MW |
| Minimum Load | 110 MW |
| Uprate/Derate Completed | No |
|---|---|
| Status | Operating |
| First Operation Date | April 1975 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Water |
| Time From Cold Shutdown To Full Load | 10M |
| Multiple Fuels | No |
Generator 2 Details Operating May 1975
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 135 MW |
| Nameplate Power Factor | 0.95 |
| Summer Capacity | 127 MW |
| Winter Capacity | 127 MW |
| Minimum Load | 46.4 MW |
| Uprate/Derate Completed | No |
|---|---|
| Status | Operating |
| First Operation Date | May 1975 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Water |
| Time From Cold Shutdown To Full Load | 10M |
| Multiple Fuels | No |
Generator 3 Details Operating June 1975
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 135 MW |
| Nameplate Power Factor | 0.95 |
| Summer Capacity | 135 MW |
| Winter Capacity | 135 MW |
| Minimum Load | 46.4 MW |
| Uprate/Derate Completed | No |
|---|---|
| Status | Operating |
| First Operation Date | June 1975 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Water |
| Time From Cold Shutdown To Full Load | 10M |
| Multiple Fuels | No |
Generator 4 Details Operating February 1978
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 135 MW |
| Nameplate Power Factor | 0.95 |
| Summer Capacity | 135 MW |
| Winter Capacity | 135 MW |
| Minimum Load | 57.5 MW |
| Uprate/Derate Completed | No |
|---|---|
| Status | Operating |
| First Operation Date | February 1978 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Water |
| Time From Cold Shutdown To Full Load | 10M |
| Multiple Fuels | No |
Generator 5 Details Operating April 1978
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 135 MW |
| Nameplate Power Factor | 0.95 |
| Summer Capacity | 135 MW |
| Winter Capacity | 135 MW |
| Minimum Load | 57.5 MW |
| Uprate/Derate Completed | No |
|---|---|
| Status | Operating |
| First Operation Date | April 1978 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Water |
| Time From Cold Shutdown To Full Load | 10M |
| Multiple Fuels | No |
Generator 6 Details Operating April 1978
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 135 MW |
| Nameplate Power Factor | 0.95 |
| Summer Capacity | 135 MW |
| Winter Capacity | 135 MW |
| Minimum Load | 57.5 MW |
| Uprate/Derate Completed | No |
|---|---|
| Status | Operating |
| First Operation Date | April 1978 |
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Water |
| Time From Cold Shutdown To Full Load | 10M |
| Multiple Fuels | No |
Lower Granite 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 |
|---|---|---|---|
| #20 | Rock Island | Wenatchee, WA | 2.1 TWh |
| #21 | Garrison | Riverside, ND | 2.1 TWh |
| #22 | Hells Canyon | Oxbow, OR | 1.9 TWh |
| #23 | Libby | Libby, MT | 1.9 TWh |
| #24 | Hoover Dam (NV) | Boulder City, NV | 1.8 TWh |
| #25 | Fort Randall | Pickstown, SD | 1.6 TWh |
| #26 | Conowingo | Darlington, MD | 1.5 TWh |
| #27 | Little Goose | Dayton, WA | 1.5 TWh |
| #28 | Colgate | Dobbins, CA | 1.4 TWh |
| #29 | Ice Harbor | Burbank, WA | 1.4 TWh |
| #31 | Lower Monumental | Kahlotus, WA | 1.4 TWh |
| #32 | Dworshak | Ahsahka, ID | 1.4 TWh |
| #33 | Noxon Rapids | Noxon, MT | 1.3 TWh |
| #34 | Pickwick Landing Dam | Pickwick Dam, TN | 1.3 TWh |
| #35 | Hoover Dam (AZ) | Boulder City, AZ | 1.2 TWh |
| #36 | Wheeler Dam | Town Creek, AL | 1.2 TWh |
| #37 | Kentucky Dam | Grand Rivers, KY | 1.1 TWh |
| #38 | Safe Harbor | Conestoga, PA | 1.0 TWh |
| #39 | Selis Ksanka Qlispe | Polson, MT | 970.3 GWh |
| #40 | Oxbow (OR) | Oxbow, OR | 965.3 GWh |
Nearby Power Plants
Below are closest 20 power plants surrounding Lower Granite.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| Adams Nielson Solar | Lind, WA | 42.5 GWh | 60 mi |
| Clearwater Paper IPP Lewiston | Lewiston, ID | 389.8 GWh | 27 mi |
| Dworshak | Ahsahka, ID | 1.4 TWh | 54.7 mi |
| Fighting Creek LFGTE Plant | Coeur d'Alene, ID | 19.9 GWh | 64.7 mi |
| Ford Hydro LP | Weippe, ID | 3.7 GWh | 72.9 mi |
| Grimes Way | Pullman, WA | 69.0 MWh | 14 mi |
| Hopkins Ridge Wind | Dayton, WA | 405.8 GWh | 25.3 mi |
| Little Goose | Dayton, WA | 1.5 TWh | 28.9 mi |
| Lower Monumental | Kahlotus, WA | 1.4 TWh | 53.1 mi |
| Lower Snake River Wind Energy Project | Pomeroy, WA | 852.0 GWh | 20.8 mi |
| Marengo Wind Plant | Dayton, WA | 692.7 GWh | 25.7 mi |
| Monroe Street | Spokane, WA | 89.9 GWh | 68.7 mi |
| Palouse | Oakesdale, WA | 325.9 GWh | 34.4 mi |
| Rattlesnake Flat | Ritzville, WA | 408.9 GWh | 57.2 mi |
| Schumann Wind Farm | Milton-Freewater, OR | 24.1 GWh | 72.8 mi |
| Spokane Waste to Energy | Spokane, WA | 135.2 GWh | 66.9 mi |
| Tucannon River Wind Farm | Dayton, WA | 808.3 GWh | 32.8 mi |
| Twin Reservoirs | Walla Walla, WA | 7.3 GWh | 55.7 mi |
| Upper Falls | Spokane, WA | 59.9 GWh | 68.7 mi |
| Upriver Dam Hydro Plant | Spokane, WA | 48.4 GWh | 70.8 mi |