Home / Power plants / Alaska
Power Plants in Alaska
All 150 operable plants · EIA inventory, May 2026.
Total capacity
3.1 GW
47th largest of 51 states
Plants
150
149 in service
Largest plant
347 MW
George M Sullivan Generation Plant 2
Capacity by fuel
46%
27%
15%
| Fuel | Capacity | Share | Plants |
|---|---|---|---|
| Natural gas | 1,438 MW | 46.1% | 13 |
| Other | 836 MW | 26.8% | 92 |
| Hydro | 480 MW | 15.4% | 30 |
| 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 power-generating fleet holds 3,116 megawatts of nameplate capacity — what the equipment could produce running flat out, not what it actually generates — ranking it 47th among the 51 states and territories by total capacity. Of this, natural gas plants provide the largest share at 46.1%, spread across 13 plants. Other fuels account for 26.8% of the fleet's capacity from 92 plants, hydro contributes 15.4% from 30 plants, coal represents 6.9% through 5 plants, battery storage makes up 2.8% through 5 plants, wind provides 1.7% from 4 plants, and solar contributes 0.2% from a single plant.
The five largest plants are George M Sullivan Generation Plant 2, a natural-gas facility with 347 megawatts in Anchorage first brought online in 1979; Beluga, a natural-gas plant with 312 megawatts on the Kenai Peninsula from 1968; Southcentral Power Project, a 204-megawatt natural-gas station in Anchorage that entered service in 2013; North Pole, an other-fuel plant with 181 megawatts in Fairbanks North Star dating to 1976; and Eklutna Generation Station, a 171-megawatt natural-gas facility in Anchorage that came online in 2015.
The fleet spans from Ketchikan, which first came online in January 1938, to International Battery Substation, which entered service in October 2024. In May 2026, 149 of the fleet's 150 plants were in service.
Written from the EIA figures on this page, covering data through May 2026.
Every plant in Alaska, by fuel
Natural gas13 plants · 1,438 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 |
Other92 plants · 836 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 | 27 | 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 |
| Gold Creek | Juneau | 9.7 MW | 8 | 1951 |
| 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 | 1957 |
| St Marys IC | Bethel | 4.6 MW | 4 | 2022 |
| NSB Nuiqsut Utility | North Slope | 4.4 MW | 6 | 1999 |
| 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 |
| 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 |
| 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 |
Hydro30 plants · 480 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 |
| 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 | 2015 |
| 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 |
| Pelican | Skagway Hoonah Angoon | 2.4 MW | 5 | 1984 |
| Gustavus | Skagway Hoonah Angoon | 2.2 MW | 5 | 2008 |
| Silvis | Ketchikan Gateway | 2.1 MW | 1 | 1968 |
| South Fork | Prince of Wales Ketchikan | 2.0 MW | 1 | 2005 |
| Newhalen | Lake and Peninsula | 1.7 MW | 5 | 1998 |
| 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 51 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 — 1,438 MW, or 46.1% of the total, across 13 plants. Other follows at 26.8%, Hydro follows at 15.4%, 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?
Ketchikan is the oldest still operable, with its earliest unit entering service in January 1938. The most recent addition is International Battery Substation (IBSS), online since October 2024.