Browsing Reports by Author "Gilbert, Steve"
Economic Analysis of an Integrated Wind-Hydrogen Energy System for a Small Alaska CommunityColt, Steve; Gilbert, Steve (Institute of Social and Economic Research, University of Alaska Anchorage, 2008-12)Wind-hydrogen systems provide one way to store intermittent wind energy as hydrogen. We explored the hypothesis that an integrated wind-hydrogen system supplying electricity, heat, and transportation fuel could serve the needs of an isolated (off-grid) Alaska community at a lower cost than a collection of separate systems. Analysis indicates that: 1) Combustible Hydrogen could be produced with current technologies for direct use as a transportation fuel for about $15/gallon-equivalent; 2) The capital cost of the wind energy rather than the capital cost of electrolyzers dominates this high cost; and 3) There do not appear to be diseconomies of small scale for current electrolyzers serving a a village of 400 people.
Village Wind Diesel Hydrogen ReportGilbert, Steve; Colt, Steve (Institute of Social and Economic Research, University of Alaska., 2006)The cost of energy in hub and satellite villages has long been a major contributor to the cost of living in rural Alaska. Wind energy currently displaces a portion of the diesel fuel used for power generation in 5 Alaskan villages; Kotzebue, Selawick, Tooksook Bay, Wales and Saint Paul Island. Numerous other villages are being considered as potential sites for integration of wind generation into the diesel electric system. Wind diesel electric systems are showing promise as sources of long term flat priced electricity for village power needs. Since the price of wind doesn’t change the cost of the wind generated component of electricity is not subject to fuel price volatility. As with any renewable energy the upfront capital cost is higher than diesel engines. Wind diesel alone however, does not address the broader energy needs of rural communities. Fuels such as gasoline, diesel and heating oil have to be transported to the village. This report explores the potential of using wind to produce hydrogen for transportation and heating fuels at a small, 400 person and large, 4000 person village.