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The RGP summer capacity generation for future years has been estimated to be 18,700 kW. This is the average summer monthly peak gen- eration for the historical years 1966 through 1980, the period of time that firming capacity has been purchased from the CRSP. The RGP winter capacity generation for future years has been estimated to be 16,148 kW. This is the average winter monthly capacity which could have been gener- ated in the years 1940 through 1981, based on the historical Elephant Butte Reservoir content as of September 30 each year and the release of 150,000 acre-feet during the October through March period. The 150,000 acre-feet per season is an est imate of the average annual amount of water for irrigation which could be reregulated by the Caballo Reservoir. It has been assumed that the winter capacity will be sold without energy, i.e., that the energy delivered with the capacity will be returned at times agreeable to the United States. E. Power Revenues. The past gros s annual revenues, as shown on the power repayment studies, were $356,772 in Fiscal Year 1941 and $1,433,481 in Fiscal Year 1980. Between these years, the revenues fluc- tuated up and down, but the general trend was upwards. Table 4 is a tab- u 1 at i on of the est imated future gros s annual revenues for the three options. A discussion of the various categories of revenues follows. 1. Energy and Capacity Sales. Table 5 is a tabulation show- i ng the revenues from energy and capac ity sales for the three opt ions. The table shows reductions in power rates after FY 2000 for Option A and after FY 1990 for Options Band C. This is based on the assumption that, after the 1990 rate setting point is passed, the power rates will be reduced as necessary to avoid accumulation of surplus revenues while still meeting repayment requirements. In accordance with the contract between Plains and the United States, a discount of 2.06 percent was allowed on the summer capacity and energy sales to Plains in the Fiscal Year 1981 through Fiscal Year 1989 period. The discount was estimated on the basis of a summer delivery to Plains of 21,880 kW for 2,550 hours (58.2 percent load factor), and appl ication of the existing rate for Fiscal Year 1981 and the proposed rate for the Fiscal Year 1982 through Fiscal Year 1989 period. No dis- count was allowed on summer sales after Fiscal Year 1989 or on any winter sales. 2. Water Oelivery. This income is derived from -the sale of water to the irrigators, and the income each year is based on water deli- vered in the past year, Historically, the income has generally ranged between about $15,000 and $80,000 annually. Based on actual water deli- veries in Fiscal Year 1980, the income for Fiscal Year 1981 will be $59,800. Based on the estimated water del ivery in Fiscal Year 1981, the income in Fiscal Year 1982 will be $65,000. For the years after Fiscal Year 1982, the income has been projected at $55,000 annually, ba,sed on the historical average annual water del ivery for the 1941 through 1980 period. The income has the effect of offsetting most of the future irri- gation O&M expense discussed in Section VII.F.3. LiJ14~7 24