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WSCC - U.S. SYSTEMS SOURCES OF ELECTRIC ENERGY GENERATION - PERCENT ACTUAL HYDRO CONDITIONS I I I I I I I I I I I I I I I I 1 I I 42 decade while natural gas cDnsumption is projected to decrease significantly as additiDna1 nuclear and cDa1 resources are placed in service. Additional delays in the startup of the Diablo Canyon and San Onofre nuclear units would significantly affect the near term natural gas and oil cDnsumption projections and significant delays in the Palo Verde and Intermountain units could seriously affect the long term gas and oil consumptiDn projectiDns. The availability Df natural gas from existing SDurces is. significantly greater than projected three years agD but is expected to decline during the next ten years. Several California utilities are projecting the use of new SDurces in the estimates of gas availability. The new sources which are under deve1Dpment, primarily liquefied natural gas and gas from Aiaska, are expected to be able to provide additional quantities of gas starting in 1985-1986. If the development of these new gas sources is delayed, additional quantities of fuel oil abDve those which are now projected may be required. Current estimates fDr the WSCC re9ion indicate that gas consumption in 1992 will be 521,783 million cubic feet, which represents 81 percent of the gas used for electric generation in 1982. Table 39 provides a complete summary of projected oil requirements by area for each of the four areas and cDmpares the requirements fDr median and adverse hydro conditions. Oil requirements will increase under adverse hydro conditions from 14 percent to 25 percent over those for median hydro conditions. This fact was clearly demonstrated during the 1977 drought when the actual oil requirement increased by 30 percent over the 1976 requirement due to adverse hydro conditions. A comparisDn of the actual 1981 energy sources for the U.S. systems of the WSCC region with the actual 1976 through 1981 energy SDurces is presented as follows: Source 1976 1977 1978 1979 1980 1981 1982 Hydro 50 35 46 40 43 42 50 Coal 19 25 23 25 27 28 30 Oil 17 22 16 16 10 6 2 Gas 11 12 11 14 15 18 13 Nuclear 2 5 3 4 3 3 3 Geothermal 1 1 1 1 1 1 1 During 1982, net exports from the region's largest exporter, the U.S. pDrtion of the Northwest Power Pool Area, were 31,011 GWH, nearly triple the 1980 expDrt of 11,740 GWH and 42 percent above the 1981 expDrt Df 21,808 GWH. The expDrt from the NWPP (inc1udin) Canada) to CA-SNV was 33,951 GWH (57.7 million equivalent barrels of oil up from 10,742 GWH in 1980 and 29,580 GWH in 1981.