Trystan Casey
Alaska, known as the Last Frontier, has a complex history of electrification. While electricity has become indispensable to Alaskans since the 1890s, the very last village in the state was only electrified as late as the 1980s. Today, Alaska's power primarily comes from natural gas, followed by hydroelectric power, with a smaller share generated from petroleum, coal, wind, biomass, and solar. Many rural communities rely on diesel-fueled electric generators, and Alaska has the highest per capita energy consumption in the nation due to its small population, harsh winters, and energy-intensive industries.
| Characteristics | Values |
|---|---|
| Electricity Source | Hydropower, natural gas, petroleum, coal, wind, biomass, solar, diesel generators |
| Total Summer Capacity in 2023 | 2,821 MW |
| Net Generation in 2023 | 6,717 GWh |
| Electrical Energy Generation Mix in 2024 | 43.7% natural gas, 26.9% hydroelectric, 15% petroleum, 11.6% coal, 1.9% wind, 0.7% biomass, 0.2% solar |
| Power Stations | Chugach Electric Association, Anchorage Municipal Light and Power, Golden Valley Electric Association, Homer Electric Association, Matanuska Electric Association |
| Electrification History | Northern Commercial Company built a wood-fired power plant in Fairbanks in 1904, mining and other extractive industries were the first to catalyze power production, followed by Federal investments and defense infrastructure projects |
| Challenges | High energy costs in rural areas, reliance on fuel oil, remote communities facing high electric costs and fuel storage issues |
| Innovations | Geothermal energy at Chena Hot Springs, Fire Island Wind Development, tidal and wave energy, solar energy, hydropower projects in Ketchikan, Kodiak, Petersburg, Valdez, and Wrangell |
| Renewable Energy Goal | 50% of electricity from renewable and alternative energy sources by 2025 |
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What You'll Learn
Alaska's electrification history
In the early days, Indigenous peoples in Alaska relied on wood, coal, and natural resources for heating and cooking. The first industries to drive power production in Alaska were mining and other extractive industries, such as commercial fishing. However, it was the colossal Federal investments and defence infrastructure projects that led to mass electrification in the territory and created the pre-conditions for statehood. For example, the Railbelt grid, the state's largest electric distribution network, has historical ties to President Theodore Roosevelt's Great White Fleet, which travelled the globe between 1907 and 1909.
In 1904, the Northern Commercial Company built a wood-fired combined heat and power plant in Fairbanks, supplying heat and electricity to a small area of downtown and earning early residents the nickname "those steam-heated pioneers". By the 1940s, Anchorage faced a critical shortage of electricity, leading to the formation of the Chugach Electric cooperative in 1947, which was incorporated in 1948 with funding under the Rural Electrification Act of 1936.
Even as late as the 1970s and 1980s, many rural communities in Alaska were still awaiting electrification. Today, Alaska's energy landscape is diverse, with the state ranking second only to Hawaii in the share of its electricity generated from petroleum. Alaska also leads the way in clean energy innovation, with one-fifth of its electricity coming from hydropower, and other sources such as geothermal, wind, tidal, wave, and solar energy being increasingly adopted.
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Sources of electricity generation
Alaska's electricity generation comes from a mix of sources, including natural gas, hydropower, petroleum, coal, wind, biomass, and solar. In 2023, Alaska had a total summer capacity of 2,821 MW through all of its power plants, with a net generation of 6,717 GWh. The electrical energy generation mix in 2024 was:
- 43.7% natural gas
- 26.9% hydroelectric
- 15% petroleum
- 11.6% coal
- 1.9% wind
- 0.7% biomass
- 0.2% solar
Many of Alaska's power stations are diesel generators, which serve isolated communities and their localized transmission and distribution networks. Alaska is second only to Hawaii in the share of its total electricity generated from petroleum, with slightly more than one-tenth in 2023.
However, Alaska is also rich in renewable energy resources, and the state has set a non-binding goal of generating 50% of its electricity from renewable and alternative energy sources by 2025. In 2023, renewable energy accounted for around one-fourth of Alaska's total electricity generation, with hydropower providing almost nine-tenths of that. Utility-scale hydropower facilities are concentrated in southern Alaska, where mountainous regions have high annual rainfall. Smaller run-of-river projects that do not use dams also produce power in some rural communities.
Other sources of renewable energy in Alaska include wind, biomass, solar, and hydrokinetic energy. The state is exploring tidal and ocean technologies that could supply renewable energy to coastal communities. Small wind and solar power generation projects are found in many remote communities, helping to reduce the use of costly petroleum products.
In terms of heating, which is the primary energy cost Alaskans face, many individuals are replacing expensive heating oil with highly efficient air-source heat pumps. In Anchorage, the Egan Convention Center has installed 216 solar panels, the state's largest rooftop solar project, projected to produce 9% of the center's annual electricity needs.
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Alaska's energy challenges
Alaska, known as "The Last Frontier", faces significant energy challenges due to its harsh climate, isolated landscape, and remote communities. Here is an overview of Alaska's energy challenges:
Energy Sources and Infrastructure: Alaska's energy landscape is heavily reliant on natural gas, with nearly 73% of the Railbelt's electricity, which serves about two-thirds of the state's population, generated from this source. While Alaska has a diverse range of power stations, including natural gas-fired plants, hydroelectric facilities, and diesel generators, it faces challenges in terms of infrastructure development and maintenance. The state's vast geography and remote communities make it difficult and costly to establish and maintain a reliable energy infrastructure.
High Energy Consumption and Costs: Alaska has the highest per capita energy consumption in the nation due to its small population, harsh winters, and energy-intensive industries. The high energy consumption, coupled with the remote locations of some communities, results in elevated electric costs for many residents. The Power Cost Equalization subsidy helps rural residential customers by reducing their electric bills closer to urban rates.
Fuel Reliance and Renewable Energy Transition: Many rural communities in Alaska rely primarily on diesel-fueled electric generators, and the state ranks second in the consumption of petroleum for electricity generation. This dependence on fossil fuels has economic and environmental implications. However, Alaska is taking steps towards a cleaner energy future. The state has a non-binding goal to generate 50% of its electricity from renewable and alternative energy sources by 2025. Alaska has abundant untapped renewable resources, including wind, hydropower, biomass, and solar energy sources. Projects like the Fire Island Wind Development near Anchorage and the utilization of geothermal energy at Chena Hot Springs in Fairbanks showcase Alaska's commitment to exploring and implementing renewable energy solutions.
Regulatory and Coordination Challenges: Alaska's energy sector faces regulatory issues and coordination challenges. The potential formation of a Railbelt Transco aims to improve the coordination of transmission and generation service along the Railbelt. Additionally, the six Railbelt utilities are studying ways to optimize efficiencies and cost savings by coordinating power generation from all sources.
Despite these challenges, Alaska has a long history of innovation and persistence in the face of adversity. The state's energy landscape is evolving, and its residents continue to demonstrate resilience and creativity in addressing their energy needs.
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Renewable energy sources
Alaska's electrification is a complex story, with reliable and easy access to electricity happening over a few generations, and some remote villages only gaining access as late as the 1980s. Alaska's harsh winters and small population mean that its per capita energy consumption is the highest in the nation. In 2023, Alaska generated about a quarter of its electricity from renewable energy sources, with a goal to reach 50% by 2025.
Hydropower
Hydropower provides almost 90% of Alaska's renewable electricity, with utility-scale hydropower facilities concentrated in southern Alaska, where there are mountainous regions with high annual rainfall. Smaller run-of-river projects, which do not use dams, also produce power in some rural communities.
Biomass
Biomass fuels, including wood, sawmill waste, fish byproducts, and municipal waste, generated about 3% of Alaska's renewable power in 2023. There is one utility-scale biomass-fueled generating plant, a 7-megawatt facility located at a landfill in Anchorage. Wood is an important renewable energy resource, with more than 100,000 cords burned every year for residential heating in Alaskan households. Fish byproducts, such as fish oil, are also used as boiler fuel for drying fishmeal.
Wind and Solar
Small wind and solar power generation projects are found in many of Alaska's remote communities, helping to reduce the use of costly petroleum products. Despite Alaska's long winter nights, solar energy is particularly useful during the summer in remote locations.
Geothermal, Tidal, and Wave Energy
Alaska is also exploring other clean energy sources, such as geothermal energy at the Chena Hot Springs in Fairbanks, the Fire Island Wind Development near Anchorage, and tidal and wave energy.
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Powering rural Alaska
The story of Alaska's electrification began as early as the 1890s, with mining and other extractive industries like commercial fishing catalysing initial power production. However, it was the colossal federal investments and defence infrastructure projects that drove mass electrification and paved the way for statehood. Even today, electricity remains integral to the lives of Alaskans and is essential for participation in the global economy.
Many rural communities in Alaska rely primarily on diesel-fueled electric generators, and the state has the second-highest consumption of petroleum for electricity generation in the nation, after Hawaii. This reliance on diesel and petroleum presents significant challenges, especially with the state's high energy consumption per capita, driven by its small population, harsh winters, and energy-intensive industries.
To address these challenges, Alaska has been exploring and adopting clean energy alternatives. The state has a non-binding goal to generate 50% of its electricity from renewable and alternative energy sources by 2025. One notable example is the utilisation of hydropower, with one-fifth of Alaska's electricity already coming from this source. The "Four Dam Pool" projects in the early 1980s serve as a testament to this, displacing the equivalent of about 20 million gallons of diesel annually for power production in Ketchikan, Kodiak, Petersburg, Valdez, and Wrangell.
In addition to hydropower, Alaska is exploring other renewable sources such as wind, geothermal, tidal and wave energy, biomass, and solar. The Fire Island Wind Development near Anchorage and the utilisation of geothermal energy at Chena Hot Springs in Fairbanks are prime examples of this diversification. Furthermore, the state has vast untapped renewable resources, including wind along its coastlines, hydropower in its high-precipitation mountain regions, biomass from its forests and agriculture, and solar energy potential from its rooftops.
The journey towards powering rural Alaska has been a testament to the resilience and innovation of its people. While challenges remain, Alaska continues to pioneer a clean energy future, finding solutions that not only meet their energy needs but also contribute to a more sustainable world.
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Frequently asked questions
Yes, Alaska has electricity.
Alaska's primary source of electricity is natural gas, which accounted for 43.7% of its electrical energy generation in 2024.
Other sources of electricity in Alaska include hydropower (26.9%), petroleum (15%), coal (11.6%), wind (1.9%), biomass (0.7%), and solar (0.2%).
Yes, Alaska has several renewable energy sources, including hydropower, wind, geothermal, tidal and wave energy, biomass, and solar.
Remote communities in Alaska often rely on diesel-fueled electric generators for power, and some may also use fuel oil for electricity and heating.
