l-----alaska power authority - Alaska Energy Data Inventory

SECTION 1SUMMARY AND RECOMMENDATIONS2. FIRST ALTERNATIVE - Diesel Plus Binary Cycle Generation SupplementedWith Waste Heat Re.covery - The first alternative listed above, dieselplus binary cycle generation with waste heat recovery, will provide thelowest cost electrical energy in Hughes (20-year evaluation), and inHughes, Takotna and Chuathbaluk (50-year evaluation). This energy planalternative averages approximately 15 percent greater cost than therecommended plan in the remaining villages. Because the uncertaintiesin the costs associated with this alternative, such as the cost of woodor c~al fuel, equipment cost, etc .• which can not at present be asprecisely determined as for the recommended energy plan, it is concejvablethat this alternative could be cost competitive with the recommendedplan (i.e., diesel generation plus waste heat recovery), in other locations.II~( I~IIW,I~Because binary cycle generation is viewed as one of the few potentiallyviable energy alternatives which is suitable for future application inremote Alaska villages, it is recommended that feasibility of binarycycle generation in Alaska be future investigated in regard to:a) Equipment availabilityb) Technical feasibilityc) Economic aspectsd) Environmental aspectse) ConstraintsVillage size binary cycle equipment is, however, not expected to becomecommercially available until the late 1980 1 s.3. SECOND ALTERNATIVE PLAN - Diesel Plus Waste Heat Recovery SupplementedWith Wind Generation - Alternative #2 diesel plus waste heat recoverysupplemented with wind generation, is cost competitive with the recommendedplan in only two of the 13 villages (Buckland and Russian Mission).Because of the marginal reliability heretofore experienced in Alaskausing wind generation and the lack of a definite cost advantage of usingsupplemental wind generation over the recommended plan, this alternativeI~LI,~r .I :~r~APA 22-A/X1-18(I-.Ir '