💧 Hydroelectric Power Plants in Alaska
Alaska operates 33 hydroelectric power plants totaling 491 MW of nameplate capacity. Annual generation: 1.8M MWh.
Hydroelectric plants spin turbines using falling or flowing water — typically from a dam-impounded reservoir. They are dispatchable, long-lived, and emission-free at the point of generation, though large reservoirs can disrupt rivers and ecosystems and methane can be released from flooded vegetation.
Plants33operating
Capacity490 MWnameplate
Generation1.8M MWhannual
All Alaska hydroelectric plants
| Plant | City | County | Capacity | Operator |
|---|---|---|---|---|
| Bradley Lake | Homer | Kenai Peninsula County | 126 MW | Homer Electric Assn Inc |
| Snettisham | Juneau | Juneau County | 78 MW | Alaska Electric Light & Power Co. |
| Eklutna Hydro Project | Palmer | Matanuska Susitna County | 44 MW | Chugach Electric Assn Inc |
| Terror Lake Microgrid | Kodiak | Kodiak Island County | 34 MW | Kodiak Electric Assn Inc |
| Swan Lake | Ketchikan | Ketchikan Gateway County | 23 MW | Southeast Alaska Power Agency |
| Tyee Lake Hydroelectric Facility | Wrangell | Wrangell Petersburg County | 23 MW | Southeast Alaska Power Agency |
| Cooper Lake | Cooper Landing | Kenai Peninsula County | 19 MW | Chugach Electric Assn Inc |
| Green Lake | Sitka | Sitka County | 19 MW | City & Borough Of Sitka - (Ak) |
| Blue Lake Hydro | Sitka | Sitka County | 16 MW | City & Borough Of Sitka - (Ak) |
| Lake Dorothy Hydroelectric Project | Juneau | Juneau County | 14 MW | Alaska Electric Light & Power Co. |
| Solomon Gulch | Valdez | Valdez Cordova County | 12 MW | Copper Valley Elec Assn, Inc |
| Gold Creek | Juneau | Juneau County | 10 MW | Alaska Electric Light & Power Co. |
| Salmon Creek 1 | Juneau | Juneau County | 9 MW | Alaska Electric Light & Power Co. |
| Allison Creek Hydro | Valdez | Valdez Cordova County | 7 MW | Copper Valley Elec Assn, Inc |
| Power Creek | Cordova | Valdez Cordova County | 6 MW | Cordova Electric Coop, Inc |
| Beaver Falls | Ketchikan | Ketchikan Gateway County | 5 MW | Ketchikan Public Utilities |
| Hiilangaay Hydro | Hydaburg | Prince Of Wales Ketchikan County | 5 MW | Haida Energy, Inc. |
| Whitman | Ketchikan | Ketchikan Gateway County | 5 MW | Ketchikan Public Utilities |
| Black Bear Lake | Craig | Prince Of Wales Ketchikan County | 5 MW | Alaska Power And Telephone Co |
| Ketchikan | Ketchikan | Ketchikan Gateway County | 4 MW | Ketchikan Public Utilities |
| Annex Creek | Juneau | Juneau County | 4 MW | Alaska Electric Light & Power Co. |
| Goat Lake Hydro | Skagway | Skagway Hoonah Angoon County | 4 MW | Alaska Power And Telephone Co |
| Purple Lake | Metlakatla | Prince Of Wales Ketchikan County | 4 MW | Metlakatla Power & Light |
| King Cove | King Cove | Aleutians East County | 3 MW | City Of King Cove |
| Kasidaya Creek Hydro | Skagway | Skagway Hoonah Angoon County | 3 MW | Alaska Power And Telephone Co |
| Pelican | Pelican | Skagway Hoonah Angoon County | 2 MW | Pelican Utility |
| Silvis | Ketchikan | Ketchikan Gateway County | 2 MW | Ketchikan Public Utilities |
| South Fork | Klawock | Prince Of Wales Ketchikan County | 2 MW | Alaska Power And Telephone Co |
| Newhalen | Iliamna | Lake And Peninsula County | 2 MW | I-N-N Electric Coop, Inc |
| Chester Lake | Metlakatla | Prince Of Wales Ketchikan County | 1 MW | Metlakatla Power & Light |
| Humpback Creek | Cordova | Valdez Cordova County | 1 MW | Cordova Electric Coop, Inc |
| Mahoney Lake Hydroelectric | Ketchikan | Ketchikan Gateway County | — | Ketchikan Electric Company |
| Sweetheart Lake Hydroelectric Facility | Juneau | Juneau County | — | Juneau Hydropower, Inc |