Renewable Energy Technology Assessments - Kauai Island Utility ...

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Kaua’i Island Utility Cooperative Renewable Energy Technology Assessments 1.0 Executive Summary derived from locally grown energy crops, does have several advantages over most other renewable energy options: (1) large amounts of baseload power could be produced from the available resource base, (2) growing and harvesting local energy crops would provide a large stimulus for Kauai’s agricultural economy and help stem the loss of jobs in the sugar industry and (3) biomass crops for power may be synergistic with crops grown for ethanol fuel production. Based on these factors, it is recommended that biomass be reexamined in more detail when KIUC has greater need for capacity resources in the future. One of the most tangible benefits of renewable energy to KIUC is lowering the exposure to rising and volatile energy prices. As a final analysis, Black & Veatch compared the levelized cost of renewable energy against KIUC’s short-term avoided costs, Schedule Q. A relationship was derived showing the variation in Schedule Q rates versus cost of oil. 1 Figure 1-7 shows a comparison of the cost to generate power from each of the renewable projects analyzed in Phase 2 versus KIUC Schedule Q rates. While Schedule Q rates fluctuate with oil prices, renewable energy costs are constant. The figure shows at what oil price points renewable energy is less or more expensive than diesel engine power generation. At an oil price of about $55/bbl, landfill gas, wind, hydro, and municipal solid waste combustion are all less expensive than Schedule Q rates. However, over the range of oil prices examined for this analysis, biomass combustion is always more expensive with a lower bound of about $80/MWh. The average price for diesel oil over the past four years is approximately $45/bbl. At this price point, hydro, wind, and municipal solid waste combustion with mid to high tipping fees are less expensive than KIUC’s Schedule Q rates. 1 Personal communication from Jeff Deren, KIUC, November 23, 2004. 21 March 2005 1-21 Black & Veatch
Kaua’i Island Utility Cooperative Renewable Energy Technology Assessments 1.0 Executive Summary Figure 1-7. Break-Even Cost Analysis for Renewable vs. KIUC’s Short Term Avoided Costs. 21 March 2005 1-22 Black & Veatch
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