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WSP03769
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Last modified
1/26/2010 12:52:01 PM
Creation date
10/11/2006 11:57:39 PM
Metadata
Fields
Template:
Water Supply Protection
File Number
8220.100.50
Description
CRSP - Power Rates
Basin
Colorado Mainstem
Date
9/1/1975
Author
USDOI/BOR
Title
CRSP and Participating Projects - Tenative Power Rate Ajustment
Water Supply Pro - Doc Type
Publication
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<br />use of 4 GWH annually for visitor centers and government camps was also <br />netted out of the CRSP generation. The project generation is expected <br />to increase in 1977 due to the Crystal development, then agaIn in 1981 <br />through 1983 due to the Central Utah Project. Other than these in- <br />creases, the general trend is downward after 1976 due to the anticipated <br />upstream water depletions by the participating projects. <br /> <br />c. Project dependable capacity. Table E-8 is a tabulation <br />showing the CRSP dependable capacity, project use, and commercial sales <br />for the years 1975 through 2059. For fiscal year 1975, actual data <br />through April 1975 were used and estimates were made for May and June <br />1975. For the years 1976 through 1986, the project adverse year capacity <br />was calculated for each season by assuming the most adverse sequences of <br />water supply that have occurred in the past would be repeated in the <br />future, and by taking into account the upstream depletions projected for <br />future years. For years after 1986, the thirteen sequences method <br />explained in subparagraph E(4) (a) for energy generation determination <br />was used to estimate the future project adverse year capacity. However, <br />to determine the adverse year capacity, a graph was plotted of the 10west <br />of the thirteen sequences, and a smooth curve was drawn through the low <br />points of the graph. This was construed to represent the effect of <br />running innumerable sequences and to represent a reasonable estimate of <br />the future adverse year capacity per season. <br /> <br />The project dependable capacity at load for each season of each year was <br />estimated to be the adverse year capacity, as described above, less <br />generating reserves equal to 10 percent of the load. It was further <br />assumed that capacity transmission losses would be offset by diversity <br />of the loads. <br /> <br />Capacity available by seasons for commercial sale was determined by <br />deducting project pumping use from the dependable capacity. For the <br />years through 1986, it was assumed that this remaining capacity would be <br />broken down into two categories, namely, capacity with energy at 2550 <br />hours per season for sale as per existing contracts, and peaking capac- <br />ity - without energy or with return of energy. Table E-8 shows no <br />peaking capacity sales after fiscal year 1986, because it is difficult <br />to p,edict what the situation will be. Since the capacity rate is the <br />same whether capacity is sold with or without energy, the assumption as <br />to whether or not there will be peaking sales, or how much, does not <br />influence the financial analysis, as long as it is assumed that the same <br />total capacity sales will occur in any case. <br /> <br />The project pumping use is estimated to increase from about 1 MW in <br />fiscal year 1975 to 92 MW in fiscal year 1988. In addition, there is an <br />estimated amount of about 1 MW for project use at visitor centers and <br />government camps. The project dependable capacity is expected to in- <br />crease in .1977 and 1978 due to the Crystal development, then again in <br /> <br />29 <br />
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