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I I r I I I I I I I I I I I I I I I I 1 INTRODUCTION Western Systems Coordinating Council (WSCC), organized in August of 1967, provides the coordination which is essential for operating and planning a reliable and adequate electric power system for the western part of the continental United States and Canada. This annual report provides information concerning the reliability and adequacy Df the planned WSCC interconnected bulk power system, and includes: . historical load and resource information . projected peak and energy load growth . planned generation and transmission facilities . estimated energy prDduction by resource type . projected fuel requirements The ten-year (1983-1992) coordinated plans of the WSCC organizations are as Df January I, 1983. WSCC is a voluntary organization open to all electric utility organizations within the WSCC region. Non-voting Affiliate Member status is available to electric utility organizations within the WSCC regiDn which have less than 100 MW of generation and do not operate transmission having a voltage of 230 kV or higher. Burbank Public Service Department became a WSCC Member System during 1982. WSCC now consists of 54 Member Systems and 7 Affiliate Members. The electric utilities comprising the WSCC Member Systems include 19 investor-owned utilities, 12 municipal utilities, 15 public power systems, 4 Federal agencies and 3 Canadian systems. The Affiliate Members represent 6 municipal utilities and 1 public power system. These utility systems provide substantially all of the electric service in the states of WashingtDn, Oregon, California, Arizona, New Mexico, Nevada, Utah, IdahD, Montana, WYDming and ColDrado, as well as pDrtions of South Dakota, Nebraska, Texas and the Canadian Provinces of British Columbia and Alberta. The WSCC Member Systems and Affiliate Members are listed Dn page 2. The WSCC regiDn encompasses approximately 1.8 milliDn square miles, representing a service area equivalent to more than one-half Df the contiguous land area of the United States. WSCC is the largest, geographically, of the nine regiDnal councils Df the North American Electric Reliability Council (NERC), and its members prDvide electric service tD apprDximately 48 million people. During 1982 WSCC's non- coincidental peak demand of 84,066 MW Dccurred in January. The WSCC service area is significantly characterized by extremes in population densities, extremes in electric load densities, and lDng distances between load centers and power generating stations. These extremes produce a wide range Df problems in providing reliable and adequate electric service within such a vast area. The WSCC regiDn cDnsists of fDur natural areas which result from concentrations of natural resources and eCDnomic influences being reflected in the geographical location and growth of population and industry. These areas are identified as: the Northwest PDwer PDDI Area, the RDCky MDuntain PDwer Area, the Arizona-New Mexico Power Area and the California-Southern Nevada PDwer Area.