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Show Vl-36 UPDATING THE HOOVER DAM DOCUMENTS COLORADO RIVER STORAGE PROJECT 31 The use of the 83-percent efficiency factor would help prevent this type of payment. The 83-percent efficiency factor is selected because that is the efficiency used in the computations to determine the amount of Hoover firm energy as defined in the "General Regulations for Generation and Sale of Power in Accordance With the Boulder Canyon Project Adjustment Act." The way is left open for the Secretary to determine how the allowance would be accomplished. For example, the Secretary might decide, if it can be worked out, to make a monetary payment therefor. If the incremental cost, which is to say the fuel replacement cost of generating substitute energy, is less than the selling rate for power from the upper basin project, then the upper basin project is better off financially to compensate monetarily than it would be to compensate with kilowatt-hours. On the other hand, it might be simpler and tatter to compensate with kilowatt-hours. This could be accomplished through the interconnection of the two power systems. It may even be possible that the Hoover power allottees would be willing to have a system of debits and credits on energy. In other words, in those years in which there is a deficiency, the power allottees might be willing to have that deficiency replaced in h subsequent year. Particularly to be noted is the fact that Glen Canyon Reservoir will be available to store water through two flood seasons prior to the availability of the generators at Glen Canyon. If any deficiency is created during this period, it can be compensated only by dollars or by debits and credils, unless some other source of energy is available to the United States. Final decisions on" the means of making the allowance is not possible at this time and will need to be based upon negotiations and on results of studies now underway in regard to possible electrical intertie. In the event of an allowance for computed deficiency, the Hoover power contractors will continue to pay under the Hoover Dam power contracts in the same manner as if the amount of energy involved in the deficiency had been generated at Hoover. Paragraph 6 is simply a tie between the general principles and the operating criteria. Paragraph 7 sets forth the method whereby minimum power head (elevation 3.490) would be gained in Glen Canyon. The proposal here is to acquire this storage at the earliest practicable time. However. Lake Mead would not be drawn below the rated head of the Hoover powerplant while acquiring this storage in Glen Canyon. This is a significant point. - If the rated head is maintained at Hoover, then only the energy generation at Hoover is affected and not the design capacity. Paragraph 8 sets forth the principle that the powerplants will be coordinated and integrated and states the general method whereby this will be accomplished. At this time it is not entirely clear whether the coordination and integration need be electrical in addition to hydrologic. Decisions on possible electrical intertie will need to be made later, following additional study. Only very general plans can be set forth in advance. To obtain the greatest practical amount of power and energy, the plants will have to be operated on an annual basis as conditions occur, and there must be therefore freedom to operate without being tied to a specific plan. The proposal for coordinated and integrated operation is deliberately tied to the |