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<br /><<":~-:-. <br /> <br />:,,,.. <br /> <br />;'_'__:~~;::-'4'c'- <br /> <br />. ,....'Y~'.,.,.''':'.--- ~'i!t..'. <br /> <br />. ,'..," <br /> <br />-'iZ?"~,,;\~r.;~~~ """.~~~ <br />, ~. " ,~,C.' '~~,":,";.__ <'--'':'''ff'7'?~L~1i <br />'.,: " """'-.;;;;:::7~~' >".3.,'-"'."". .,o~~"'-:'~2 .t"1 <br /> <br />~ <br />C' <br />C'--l <br />C"l <br /> <br />. <br /> <br />A. B. ROBeRTS <br />CONSULTING eNGINeeR <br /> <br />$W~TLAND llLDG. <br /> <br />CLeVeLAND <br /> <br />SECTICN I <br /> <br />2.! <br />REPCRT BY A.B. RCBERTS <br />INDEPENDENT STUDY OF THE VALUE CF FALLING <br />WATER FCR PRIMARY ENERGY AT BOULDER DAM <br /> <br />Preliminary to the presentation of my study of <br /> <br />the value of falling water for primary energy at Boulder <br /> <br />Dam, it seems advisable to set forth a few of the <br /> <br />general operating practices of utilities with which I am <br /> <br />familiar. <br /> <br />. <br /> <br />Reserve Capacity <br />In connection with the relationship between <br />spinning reserve and peak demands, it is fOlli1d that the <br />practices of various electric utility companies are the <br /> <br />following: <br /> <br />. <br /> <br />The Cleveland Electric Illuminating Company (all <br />steam) plans its construction and operating program te <br />provide spinning reserve equal to the capacity of the tWG <br />largest units comprising the largest unit at each of two <br />generating stations. <br />The Pacific Gas and Electric Company (combina- <br />tion hydro and steam) reports that its practice is to pro- <br />vide spinning steam capacity to back up the hydro in an <br />