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The Nevada electrical load is characterized by a winter heating peak and the Arizona load by a summer air-conditioning and irrigation pumping peak. Their industrial demands are not of sufficient magnitude to materially flatten the peaks. California, with a large year-round industrial demand, has only a minor peak which occurs during the winter. The market area, as a whole, has a September peak. Future Power Requirements According to Federal Power Commission estimates, the electrical requirements of the market area for 1970 and 1980, as presented in table 18, will be 93 billion kilowatt-hours and 172 billion kilowatt-hours, respectively, with peak demands of 17,000,000 kilowatts and 31,084,000 kilowatts. Table 18 PACIFIC SOUTHWEST AREA FUTURE POWER REQUIREMENTS Estimated Annual Energy Requirements Estimated Noncoincident (Millions of Kilowatt-hours) Peak Demand Load Load Increase (Thousands of Kilowatts) Incremental Accumulative Increase Total 1950 16,713 3,085 1960 44,135 27,422 27,422 7,790 1970 93,009 48,874 76,296 16,993 1975 127,200 34,191 110,487 23,198 1980 171,534 44,334 154,821 31,084 The above data, with a further projection to year 2000 expressed in terms of megawatts and including reserve capacity, is shown on Drawing No. 57-314-50. Additional requirements foreseen for water-supply purposes are the pumping load for the California Aqueduct, the Central Arizona Project, desalting plants, and the Southern Nevada Water Supply Project. These requirements, estimated at 2,100 megawatts in 1980, are expected to grow to 3,000 megawatts in 2000 and 3,800 megawatts in 2020. Future Power Sources Hydroelectric--Installed hydroelectric capacity will continue to increase, but its relative magnitude will be dwarfed by the V-3Epson Perfection 4870 Photo, 400 dpi, 8 bit, 14,342,144 byte