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<br />lEe' . <br />~,- <br />F' <br />.' <br /> <br />~.:: _: ---~~~ ---J--=---~::_-----=-----. <br /> <br />their annual peaks during the winter. Utilities ~hich serve in eastern Colorado <br /> <br />have larger summer peaks due to air conditioning and large irrigation pumping <br /> <br />loads. The diversified i977 sum,er peak loads of the distribution cooperative <br /> <br />systems were assu~ed [0 be equal to the sum of each utility's summer peak. <br /> <br />The i977 summer peak cemands of Platte Rivet' Pov;er Authority, Lamar, and City <br /> <br />of Colorado Springs vlere obtained and a 90;, coincidence factor I",as assumed for <br /> <br />.the remaining municipal systems. The 1977 ratio between the non-coincident <br /> <br />demand and the diversified summer peak was used to estimate futuJ'e diversified <br /> <br />~, <br /> <br />summer peaks. Co1orodols SUIT'.mer ~.eak responsibi1ity LY'las th'2r1 assu;T12d to 1:2 <br /> <br />the sum of the diversified Colorado-Ute, Tri-State, and I71llnicipal system <br /> <br />demand and tIle 5urrmation of the pejks of the refraining syste~s. The table <br /> <br />also indice.tes that Color2.do's surrmer pe3k derr:and is pi'oject'2J to increase <br /> <br />by 95;; in the next ten years. The increase ft'om,3781.3 mega'ilatts .!t1...i97.l to <br />J37Q r,ega\'latts in i937 is equivalent to an average cQr;lpounded grcvlth rate <br /> <br />of 6. 95~. <br /> <br />The existing net g~neratillg capacity in Colorado as of Dece~ber 31, 1977, is <br /> <br />sho,m in Table ilL The capacity ','as adjusted for S'J"'mer operating ccnditions <br /> <br />where combustion turbines, certain conventional hydro, and pllnip storage hydro <br /> <br />have a lower capacity rating. <br /> <br />Generation by steam accounts for 7i~ of the <br /> <br />existing capacity. <br /> <br />Table IY shows the proposed aenerating capacity to be located in Colorado <br /> <br />through 1987. The proposed generation is tabulated by type, i.e., Steam (fossil), <br /> <br />Internal Combustion, etc., for those units. Certain units with their respective <br /> <br />capacities enclosed by parentheses are expected to be retired as of the date <br /> <br />shown. The proposed generating capacity in Colorado as of December 3i, 1937, <br /> <br />is 8470 megawatts. <br /> <br />1403 <br /> <br />-2- <br />