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Renewable Energy in Alaska

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Renewable Energy in Alaska ( renewable-energy-alaska )

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successful example of the use of geothermal energy within the state where the energy is used to generate electricity (displacing 150,000 gallons of diesel per year), to heat buildings, outdoor ponds, swimming pools and even to provide heat and carbon dioxide to greenhouses. A number of other geothermal projects have been proposed in the state, most prominently a large facility on Mt. Spurr (near the Chakachamna hydroelectric proposal) to provide power to the Railbelt grid. The state also sold geothermal leases on Augustine Island in 2013. In late 2013, exploratory drilling began on a geothermal project to power Nome. Tidal Cook Inlet in Alaska is home to most of the state's population, and has one of the largest tidal ranges in the world, making it an ideal location for harnessing tidal power . Alaska possesses 90% of the tidal power potential in the US. This gives the state the opportunity to be at the forefront of technology development, but meansthereisnooff-the-shelfsolutiontoputinplace. The Federal Energy Regulatory Commission (FERC) has issued several preliminary tidal energy project permits in Alaska, see our article on "Tidal Power in Cook Inlet" for more details. Wave Alaska receives massive inputs of wave energy , Southern Alaska alone is estimated to receive 300 times the total energy needs of the state annually. However, the technology to develop wave energy potential on a large scale is still in early stages. A second problem in Alaska is that the largest waves are on the outer coasts, while the major population centers are in inlets and bays, so additional transmission infrastructure would be required to develop wave energy on a large scale. While no large-scale studies have been undertaken in Alaska to assess the potential of this resource, the community of Yakutat is moving forward with a pilot wave project. Biomass/Biofuels Biomass refers to both "primary biomass" such as wood as well as "waste biomass" which in Alaska includes sawmill wastes, fish byproducts, and municipal waste. While wood is no longer used by most large electricity and heating utilities, it is still a very important source of residential heating in many locations. In addition, wood pellets are becoming increasingly popular, both in Alaska and worldwide . The first large-scale wood pellet plant in Alaska was recently completed near Fairbanks. In addition, the city of Craig has recently installed a sawmill-waste fired boiler which will heat a variety of city buildings. Over 40 projects of this nature are being considered around Alaska, both for economic and environmental reasons. Fish oil and other fish byproducts are used in some processing facilities as generator fuel, but have limited applicability to other locations. Similarly, municipal wastes are used for energy generation in some locations (e.g. Eielson Air Force Base ) but this cannot provide an adequate amount of energy on its own. Biodiesel or bio-ethanol is unlikely to be produced in large quantities in Alaska. This would require growing popular biofuel crops such as corn or soybeans, neither of which is currently produced in the state (or practical to grow in our northern climate). However, for years there have been small programs in Anchorage, Fairbanks, and Juneau to reuse waste cooking oil as biodiesel . A larger (250,000 gallons per year) facility was completed in Anchorage in 2010, and Alaska Waste will use this biodiesel to help power their vehicle fleet. Solar Solar power is unlikely to make up a large percentage of commercial energy generation in Alaska due to a combination of high capital costs and low amounts of sunshine in the winter (when energy demand is highest). Nakwakto Tidal Rapid Deep water pours throught this tidal rapid draining Seymour Inlet. http://www.groundtruthtrekking.org/Issues/Renewable-Energy-in-Alaska.html Creative Commons Attribution Non-Commercial Page 3 of 4

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