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Powerplant is expected to begin in April 1977. Another future power development, expected to be in service by 1979, is the 23-MW plant of the Navajo Indian Irrigation participating project, which will be in- stalled below the CRSP Navajo Dam. In about 1980, the 133.5 MW of the three potential plants of the Central Utah participating project are expected to be placed in service. Addition of the aforementioned plants will bring the total installed capacity to 1432.5 MW. Power generated at the CRSP and participating projects is dedicated first to project pumping requirements and other project uses of the CRSP and the participating projects. The remaining project power is sold commercially to preference customers in the established market area. The market area includes a Northern Division comprised of the States of Colorado, New Mexico, Utah, and Wyoming, and a Southern Divi- sion comprised of Arizona and parts of the States of Nevada and Cali- fornia. Power was sold initially to all preference customers up to their total requirements with the provision that power would be with- drawn from Southern Division customers as Northern Division loads develop, until a minimum sale to the Southern Division is reached amounting to 20 percent of project capability in the summer and 7 per- 'cent in the winter. Transmission facilities include a high-voltage transmission grid to deliver power to the established delivery points in the market area, to provide interconnections among the plants of the CRSP units and par- ticipating projects, and to interconnect with other existing Federal and utility systems within the market area. Additional transmission facilities are planned to deliver power from the additional generation mentioned above, to deliver to Northern Division customers the power to be withdrawn from the Southern Division, and to meet improved system reliability criteria. Map No. 594-400-79 is attached hereto as Figure D-l to show the CRSP powerplants and transmission facilities, as well as other principal power systems in the market area. 2. Rate Schedule History. The first CRSP power rate, the R4-Fl schedule, was established on March 6, 1962. This rate was somewhat less than the prevailing power rates in the market area and was sufficient, based on the then current price level and the then estimated future costs, to pay the project's annual operating costs and provide the repayments and irrigation assistance required. Following is that monthly rate schedule: Energy 3 mills per kWh Capacity $1.275 per kW, where the kW is the greater of the maximum 30-minute integrated demand or the contract rate of delivery, such contract rate of delivery being established for the Summer Season (April through September) or for the Winter Season (October through March). 5