Wind farms have also sprouted up on the Railbelt, including 17.6 MW on Fire Island near Anchorage, 24.6 MW at Eva Creek near Healy and 1.9 MW at Delta Junction.
Today, a about 2,000 MW of installed power generation capacity exists along the Railbelt, a region with an average annual electric load of about 600 MW. The six Railbelt utilities are currently studying the benefits of coordinating dispatch of power generation from all sources to maximize efficiencies and cost savings, though investments in the Railbelt’s transmission system may be required to realize all of those potential benefits.
During the early 1980s, the state completed a total of four hydropower projects to serve Ketchikan, Kodiak, Petersburg, Valdez and Wrangell. At 76 MW, the “Four Dam Pool” projects displace the equivalent of about 20 million gallons of diesel for annual power production. Additional southeast hydro facilities are currently being developed in Juneau and Prince of Wales Island communities.
Southcentral Alaska’s heating needs are met almost exclusively by ENSTAR Natural Gas Company, which moves the gas from the Cook Inlet gas fields through over 300 miles of pipelines, and a little over 3,000 miles of distribution mains to the Kenai Peninsula, Anchorage and Matanuska Valley areas.
With some notable exceptions, most of Alaska’s remaining power and heating needs are fueled by diesel barged from Lower 48 suppliers or transported from refineries in Nikiski, North Pole and Valdez. After freeze-up, many remote communities rely on fuel stored in tank farms, or pay a premium for fuel flown in by air tankers. State and federal authorities continue to support programs to fix leaky tanks, improve power generation, generation efficiency and develop local renewable energy sources such as wind, biomass and hydro.