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, t '. ~- ~-- -~ , ---- -, . , ' " ~. __ __ ~_ ___ ____ _ _.l:O_tO.La.rloY~.c Fixed Utilities AJG - 12/78 COLORADO ELECTR 1 C 1977 -1987 SUPPLY SURVEY The 1977 total electrical utility enet9Y requirements for loads in Colorado "'--=~- - was 20,774,800 megawatt-hours, and the estimated diversified summer peak demand was 3,781.3 megawatts. This corresponds to an annual load factor of 62.7~, down fronl 63.a~ in 1976. Coloradols erlergy require~ents increased 6.4% over 1976 whicil was lower than tile 9.6~ gro~/t;l predicted by the utilities in the previous year. Retail electric service in Colorado is furnished by 62 electric utilities. There are three investor-owned power companies, 29 distribution rural electric associations, and 30 municipal1y-awn~d electric utilities. Wholesale power' is supplied to dist)"ibution systems by four utilities; 't/ester!; Area Po\'ier ,C,dminist)'ation, Colorado-Ute El~ctric ,~ssoci"tion, lnc" Tri--State Genention and Trans8ission, Inc., and Platte Ri\'et~ p,)\.ter Authority. ~ab..le I, "Electric21 Ene:gy Requirerrents in GigG~.Jatt-hours" lists the ac':ual 1977 and projected energy )"equ1rements of util ities through 1987, tJ:;}.Y the energy requirements for Colorado were considered fo)" those utilities serving in more than one sta;;? This table indicates tllat the electrical energy reairements for Coloradb are projected to increase by 95r from 1977 to 1987 -I with an increase from 20,774,800 to 40,463,000 megawatt-hours. This is equivalent to an average compounded gro\'lth rate of '6;0 1404 The 1977 peak demands and projected peak loads through 1987 are given by utility in Tabl_e_.rI,,~It can be seen from the table that most electric utilities which serve on the western slope of Colorado or along the front range have