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<br />5 <br /> <br />the metro area residential rate and will stay there. The declining <br />blocks are priced on the PUC I s cost of service principle nnd are <br />alree.dy. este.blished. Thus, t':1e Denver \!ater D9:J8.rtment r selectric <br />rate should increase in the future much like the metro area residential <br />rate of increase. Both a 6% and an 8% rate are used in the calculations <br />that folloH. <br />The 1978 PH of the HC-SS OH&R cost differences (with 6% electric) <br />are computed as folloHs. The method is more complex for 8% electric. <br /> <br />Yea.rs PI, factor He-SS OH&R Dirf. PH <br />1982 1.0 0-1,077 -1 , 077 <br />1933-) 998 16.0 2,743-1,077 26,656 <br />after 1998 5.198 2,743-1,077 8,660 <br /> Total 1973 PH C)1 000 ) 34,239 <br />C. Comparison of I&A and OH&R Cost Differences <br /> <br />Case <br /> <br />1978 PH ({\1000) <br /> <br />Approx. Diff. <br />$/mg <br />-48 <br />-31 <br />-7 <br />10 <br />24 <br />28 <br />84 <br />93 <br /> <br />" <br /> <br />1. wlo Aurora, 3~ kuh, 6% -31,596 <br />2. wlo Aurora, 3~ hIh, 8% -20,569 <br />3. Aurora, 31 kim, 6% -4,395 <br />4. Aurora, 3~ kwh, 8% 6,632 <br />5. Aurora, 3.61: kwh, 8% 1 5,877 <br />6. Aurora, 3.61Imh, 8%, power sales 18,225 <br />7. 75 yr, 3.6~, 8%, power sales, Aurora 55,000 <br />8. same as 7., Corps method 61,000 <br /> <br />D. Assumption Sensitivity 0/mg changed by <br />1. 25 years to 75 years I&A 56 <br />2. Aurora 41 <br />3. 6% to 8% electric 17 <br />4. 31 to 3.69 kllh at 8% 14 , <br />5. 3.6~ pm.lcr ::Joles a.t 8% 4 <br />6. contractor, Corps method differences 9 <br /> <br />00700 <br />