Home / Power plants / Alaska
Power Plants in Alaska
All 150 operable plants · EIA inventory, August 2026.
Total capacity
3.1 GW
47th largest of the 50 states and DC
Plants
150
149 in service
Largest plant
347 MW
George M Sullivan Generation Plant 2
Capacity by fuel
46%
27%
16%
| Fuel | Capacity | Share | Plants |
|---|---|---|---|
| Natural gas | 1,442 MW | 46.3% | 14 |
| Other | 829 MW | 26.6% | 93 |
| Hydro | 484 MW | 15.5% | 28 |
| Coal | 216 MW | 6.9% | 5 |
| Battery storage | 86 MW | 2.8% | 5 |
| Wind | 54 MW | 1.7% | 4 |
| Solar | 6.0 MW | 0.2% | 1 |
Nameplate capacity — what the fleet could produce running flat out — not what it actually generated. A plant is filed under the fuel carrying most of its capacity. See what Alaska actually generated →
Largest plants in Alaska
| # | Plant | Fuel | Capacity | Online |
|---|---|---|---|---|
| 1 | George M Sullivan Generation Plant 2Anchorage County | Natural gas | 347 MW | 1979 |
| 2 | BelugaKenai Peninsula County | Natural gas | 312 MW | 1968 |
| 3 | Southcentral Power ProjectAnchorage County | Natural gas | 204 MW | 2013 |
| 4 | North PoleFairbanks North Star County | Other | 181 MW | 1976 |
| 5 | Eklutna Generation StationAnchorage County | Natural gas | 171 MW | 2015 |
| 6 | Bradley LakeKenai Peninsula County | Hydro | 126 MW | 1991 |
| 7 | SoldotnaKenai Peninsula County | Natural gas | 97 MW | 2014 |
| 8 | HealyDenali County | Coal | 93 MW | 1967 |
| 9 | Nikiski Combined CycleKenai Peninsula County | Natural gas | 81 MW | 1986 |
| 10 | SnettishamJuneau County | Hydro | 78 MW | 1973 |
Alaska's generating fleet in context
Alaska's generating fleet holds 3,116 megawatts of capacity, ranking it 47th of the 50 states and DC. This figure represents what the equipment could produce running flat out, not the electricity it actually generated. Natural gas dominates at 46.3% of the state's capacity across 14 plants, while other fuels account for 26.6%, hydro provides 15.5%, and coal, battery storage, wind, and solar together make up the remainder.
The George M Sullivan Generation Plant 2, a natural gas station with 347 megawatts, stands as the largest facility. It is followed by Beluga, another natural gas plant at 312 megawatts, and the Southcentral Power Project at 204 megawatts. The North Pole station, fueled by other sources, adds 181 megawatts, while the Eklutna Generation Station, running on natural gas, contributes 171 megawatts. Battery storage across five plants totals 86 megawatts of capacity.
The fleet spans more than a century in age. Skagway, the oldest plant still listed, came online in July 1909. The newest addition is the International Battery Substation (IBSS), which entered service in October 2024. Alaska's 150 plants include numerous small installations: plant count includes everything down to sub-megawatt backup generators, so the large number of facilities does not indicate a large total fleet by capacity measures.
Written from the EIA figures on this page, covering data through August 2026.
Every plant in Alaska, by fuel
Natural gas14 plants · 1,442 MW
All US natural gas plants →| Plant | County | Capacity | Units | Online |
|---|---|---|---|---|
| George M Sullivan Generation Plant 2 | Anchorage | 347 MW | 5 | 1979 |
| Beluga | Kenai Peninsula | 312 MW | 6 | 1968 |
| Southcentral Power Project | Anchorage | 204 MW | 4 | 2013 |
| Eklutna Generation Station | Anchorage | 171 MW | 10 | 2015 |
| Soldotna | Kenai Peninsula | 97 MW | 2 | 2014 |
| Nikiski Combined Cycle | Kenai Peninsula | 81 MW | 2 | 1986 |
| Hank Nikkels Plant 1 | Anchorage | 78 MW | 3 | 1972 |
| Bernice Lake | Kenai Peninsula | 77 MW | 3 | 1971 |
| TNSG North Plant | North Slope | 26 MW | 5 | 2008 |
| Barrow | North Slope | 17 MW | 5 | 1977 |
| Nutrien Kenai Nitrogen Operations | Kenai Peninsula | 13 MW | 5 | 1977 |
| Tesoro Kenai Cogeneration Plant | Kenai Peninsula | 8.6 MW | 2 | 1988 |
| TNSG South Plant | North Slope | 7.8 MW | 5 | 1992 |
| NSB Nuiqsut Utility | North Slope | 4.4 MW | 6 | 1999 |
Other93 plants · 829 MW
All US other plants →| Plant | County | Capacity | Units | Online |
|---|---|---|---|---|
| North Pole | Fairbanks North Star | 181 MW | 4 | 1976 |
| Lemon Creek | Juneau | 62 MW | 11 | 1969 |
| Fairbanks | Fairbanks North Star | 42 MW | 4 | 1970 |
| Industrial Plant | Juneau | 42 MW | 1 | 2016 |
| Auke Bay | Juneau | 36 MW | 3 | 1980 |
| S W Bailey | Ketchikan Gateway | 26 MW | 4 | 1969 |
| Jarvis Street | Sitka | 26 MW | 5 | 1979 |
| Delta Power | Southeast Fairbanks | 23 MW | 1 | 1976 |
| Dutch Harbor | Aleutians West | 22 MW | 7 | 1989 |
| Snake River | Nome | 18 MW | 7 | 1991 |
| Kodiak Microgrid | Kodiak Island | 18 MW | 4 | 1976 |
| Unisea G 2 | Aleutians West | 18 MW | 8 | 1990 |
| Kotzebue Hybrid | NORTHWEST ARCTIC | 17 MW | 26 | 1987 |
| Naknek | Bristol Bay | 17 MW | 12 | 1977 |
| Seward (AK) | Kenai Peninsula | 16 MW | 6 | 1975 |
| Petersburg | Wrangell Petersburg | 15 MW | 8 | 1965 |
| Bethel | Bethel | 14 MW | 7 | 1976 |
| Wrangell | Wrangell Petersburg | 12 MW | 5 | 1987 |
| JBER Landfill Gas Power Plant | Anchorage | 12 MW | 5 | 2012 |
| Dillingham | Dillingham | 11 MW | 8 | 1988 |
| Nymans Plant Microgrid | Kodiak Island | 10 MW | 2 | 1994 |
| Glennallen | Valdez Cordova | 9.2 MW | 4 | 1976 |
| Orca | Valdez Cordova | 8.7 MW | 4 | 1984 |
| Valdez | Valdez Cordova | 8.6 MW | 5 | 1972 |
| Swampy Acres Microgrid | Kodiak Island | 8.4 MW | 3 | 2002 |
| Haines | Haines | 8.3 MW | 5 | 1968 |
| Tok | Southeast Fairbanks | 8.2 MW | 7 | 1989 |
| Fort Greely Power Plant | Southeast Fairbanks | 7.4 MW | 4 | 1959 |
| Westward Seafoods | Aleutians West | 6.6 MW | 3 | 1991 |
| Valdez Cogen | Valdez Cordova | 5.3 MW | 1 | 2000 |
| Skagway | Skagway Hoonah Angoon | 4.7 MW | 8 | 1909 |
| St Marys IC | Bethel | 4.6 MW | 4 | 2022 |
| King Cove | Aleutians East | 3.9 MW | 6 | 1986 |
| False Island | Prince of Wales Ketchikan | 3.8 MW | 2 | 2003 |
| Yakutat | Yakutat | 3.8 MW | 4 | 1999 |
| Sand Point | Aleutians East | 3.7 MW | 6 | 2000 |
| NSB Atqasuk Utility | North Slope | 3.2 MW | 5 | 1986 |
| Kake | Wrangell Petersburg | 3.1 MW | 5 | 1993 |
| NSB Point Hope Utility | North Slope | 3.1 MW | 4 | 1995 |
| NSB Wainwright Utility | North Slope | 3.0 MW | 5 | 1988 |
| Craig (AK) | Prince of Wales Ketchikan | 2.8 MW | 3 | 1983 |
| Gwitchyaa Zhee | Yukon Koyukuk | 2.8 MW | 4 | 2015 |
| Togiak | Dillingham | 2.8 MW | 4 | 2019 |
| NSB Anaktuvuk Pass | North Slope | 2.7 MW | 5 | 1994 |
| Galena Electric Utility | Yukon Koyukuk | 2.6 MW | 4 | 2004 |
| NSB Kaktovik Utility | North Slope | 2.6 MW | 4 | 2000 |
| Klawock Power Generation Station | Prince of Wales Ketchikan | 2.5 MW | 1 | 2017 |
| NSB Point Lay Utility | North Slope | 2.4 MW | 4 | 2013 |
| Pelican | Skagway Hoonah Angoon | 2.4 MW | 5 | 1984 |
| Gustavus | Skagway Hoonah Angoon | 2.2 MW | 5 | 2008 |
| Hooper Bay | Bethel | 2.2 MW | 4 | 1997 |
| Selawik | Northwest Arctic | 2.2 MW | 3 | 2013 |
| Toksook Bay | Bethel | 2.1 MW | 3 | 2005 |
| Hoonah | Skagway Hoonah Angoon | 2.0 MW | 3 | 1997 |
| Kasigluk | Bethel | 2.0 MW | 3 | 2004 |
| Seldovia | Kenai Peninsula | 2.0 MW | 2 | 2017 |
| Stebbins | Nome | 2.0 MW | 4 | 2014 |
| Unalakleet | Nome | 2.0 MW | 4 | 2010 |
| Noorvik | Northwest Arctic | 1.9 MW | 4 | 1997 |
| Centennial | Prince of Wales Ketchikan | 1.8 MW | 1 | 2017 |
| Chevak | Bethel | 1.8 MW | 3 | 2009 |
| Gambell | Nome | 1.8 MW | 3 | 2006 |
| Aniak | Bethel | 1.7 MW | 3 | 1996 |
| Newhalen | Lake and Peninsula | 1.7 MW | 5 | 1998 |
| Savoonga | Nome | 1.7 MW | 3 | 2008 |
| McGrath | Yukon Koyukuk | 1.6 MW | 4 | 2021 |
| Angoon | Skagway Hoonah Angoon | 1.5 MW | 3 | 1990 |
| Shishmaref | Nome | 1.5 MW | 4 | 1976 |
| Emmonak | Kusilvak | 1.4 MW | 2 | 1995 |
| Kotlik | Kusilvak | 1.4 MW | 4 | 2007 |
| Kiana | Northwest Arctic | 1.3 MW | 3 | 1984 |
| New Stuyahok | Dillingham | 1.3 MW | 3 | 2010 |
| Noatak | Northwest Arctic | 1.3 MW | 3 | 2008 |
| Pilot Station | Kusilvak | 1.3 MW | 3 | 2005 |
| Quinhagak | Bethel | 1.3 MW | 3 | 2002 |
| Scammon Bay | Kusilvak | 1.3 MW | 3 | 2001 |
| Northway | Southeast Fairbanks | 1.2 MW | 3 | 1997 |
| Shungnak | Northwest Arctic | 1.2 MW | 4 | 1984 |
| Slana Generating Station | Southeast Fairbanks | 1.2 MW | 3 | 2016 |
| Ambler | Northwest Arctic | 1.1 MW | 3 | 1990 |
| Elim | Nome | 1.1 MW | 3 | 2003 |
| Kivalina | Northwest Arctic | 1.1 MW | 4 | 1977 |
| Koyuk | Nome | 1.1 MW | 3 | 2005 |
| Marshall | Kusilvak | 1.1 MW | 3 | 1994 |
| Unalaska Power Module | Aleutians West | 1.1 MW | 1 | 1993 |
| Upper Kalskag | Bethel | 1.1 MW | 3 | 2004 |
| Brevig Mission | Nome | 1.0 MW | 3 | 2010 |
| Thorne Bay Plant | Prince of Wales Ketchikan | 1.0 MW | 2 | 1993 |
| Alakanuk | Kusilvak | 0.8 MW | 1 | 2013 |
| Mountain Village | Bethel | 0.7 MW | 1 | 2010 |
| St. Michael | Nome | 0.7 MW | 1 | 2015 |
| Nunapitchuk | Bethel | 0.5 MW | 1 | 2006 |
| Port Lions Microgrid | Kodiak Island | 0.5 MW | 1 | 2017 |
Hydro28 plants · 484 MW
All US hydro plants →| Plant | County | Capacity | Units | Online |
|---|---|---|---|---|
| Bradley Lake | Kenai Peninsula | 126 MW | 2 | 1991 |
| Snettisham | Juneau | 78 MW | 3 | 1973 |
| Eklutna Hydro Project | Matanuska Susitna | 44 MW | 2 | 1955 |
| Terror Lake Microgrid | Kodiak Island | 34 MW | 3 | 1984 |
| Swan Lake | Ketchikan Gateway | 23 MW | 2 | 1984 |
| Tyee Lake Hydroelectric Facility | Wrangell Petersburg | 23 MW | 2 | 1983 |
| Cooper Lake | Kenai Peninsula | 19 MW | 2 | 1961 |
| Green Lake | Sitka | 19 MW | 2 | 1982 |
| Blue Lake Hydro | Sitka | 16 MW | 3 | 2014 |
| Lake Dorothy Hydroelectric Project | Juneau | 14 MW | 1 | 2009 |
| Solomon Gulch | Valdez Cordova | 12 MW | 2 | 1982 |
| Gold Creek | Juneau | 9.7 MW | 8 | 1914 |
| Salmon Creek 1 | Juneau | 8.5 MW | 1 | 1984 |
| Allison Creek Hydro | Valdez Cordova | 6.5 MW | 1 | 2016 |
| Power Creek | Valdez Cordova | 6.0 MW | 2 | 2001 |
| Beaver Falls | Ketchikan Gateway | 5.4 MW | 3 | 1947 |
| Hiilangaay Hydro | Prince of Wales Ketchikan | 5.0 MW | 1 | 2021 |
| Whitman | Ketchikan Gateway | 4.8 MW | 2 | 2015 |
| Black Bear Lake | Prince of Wales Ketchikan | 4.5 MW | 1 | 1995 |
| Ketchikan | Ketchikan Gateway | 4.2 MW | 3 | 1938 |
| Annex Creek | Juneau | 4.0 MW | 2 | 1915 |
| Goat Lake Hydro | Skagway Hoonah Angoon | 4.0 MW | 1 | 1997 |
| Purple Lake | Prince of Wales Ketchikan | 3.9 MW | 3 | 1956 |
| Kasidaya Creek Hydro | Skagway Hoonah Angoon | 3.0 MW | 1 | 2008 |
| Silvis | Ketchikan Gateway | 2.1 MW | 1 | 1968 |
| South Fork | Prince of Wales Ketchikan | 2.0 MW | 1 | 2005 |
| Chester Lake | Prince of Wales Ketchikan | 1.3 MW | 1 | 1988 |
| Humpback Creek | Valdez Cordova | 1.2 MW | 3 | 1991 |
Coal5 plants · 216 MW
All US coal plants →| Plant | County | Capacity | Units | Online |
|---|---|---|---|---|
| Healy | Denali | 93 MW | 3 | 1967 |
| University of Alaska Fairbanks | Fairbanks North Star | 40 MW | 5 | 1964 |
| Eielson AFB Central Heat & Power Plant | Fairbanks North Star | 36 MW | 8 | 1955 |
| Chena Power Plant | Fairbanks North Star | 28 MW | 3 | 1952 |
| FWA Central Heat and Power Plant | Fairbanks North Star | 20 MW | 4 | 1955 |
Battery storage5 plants · 86 MW
All US battery storage plants →| Plant | County | Capacity | Units | Online |
|---|---|---|---|---|
| Battery Energy Storage System | Fairbanks North Star | 40 MW | 1 | 2003 |
| International Battery Substation (IBSS) | Anchorage | 40 MW | 1 | 2024 |
| ESS Battery Microgrid | Kodiak Island | 3.0 MW | 1 | 2012 |
| Flywheel Energy Storage System Microgrid | Kodiak Island | 2.0 MW | 1 | 2015 |
| Eyak Service Center BESS | Valdez Cordova | 1.0 MW | 1 | 2019 |
Wind4 plants · 54 MW
All US wind plants →| Plant | County | Capacity | Units | Online |
|---|---|---|---|---|
| Eva Creek Wind | Denali | 25 MW | 1 | 2013 |
| Fire Island Wind | Anchorage | 18 MW | 1 | 2012 |
| Pillar Mountain Wind Project Microgrid | Kodiak Island | 9.0 MW | 2 | 2009 |
| Delta Wind Farm | Southeast Fairbanks | 1.9 MW | 3 | 2008 |
Solar1 plant · 6.0 MW
All US solar plants →| Plant | County | Capacity | Units | Online |
|---|---|---|---|---|
| Houston Solar | Matanuska Susitna | 6.0 MW | 1 | 2023 |
Sorted by nameplate capacity within each fuel. “Online” is the year the plant’s earliest surviving unit entered service.
Frequently asked questions
›How many power plants are there in Alaska?
Alaska has 150 operable power plants with a combined nameplate capacity of 3.1 GW, the 47th largest generating fleet of the 50 states and DC. 149 of them are currently in service.
›What is the largest power plant in Alaska?
George M Sullivan Generation Plant 2 in Anchorage County, a natural gas plant with 347 MW of capacity across 5 generating units, first online in June 1979.
›What fuel do Alaska's power plants use?
Natural gas accounts for the largest share of Alaska's generating capacity — 1,442 MW, or 46.3% of the total, across 14 plants. Other follows at 26.6%, Hydro follows at 15.5%, Coal follows at 6.9%. Note this is capacity, not generation — what the fleet could produce, not what it did.
›What is the oldest power plant in Alaska?
Skagway is the oldest still operable, with its earliest unit entering service in July 1909. The most recent addition is International Battery Substation (IBSS), online since October 2024.