WSP11846 - Laserfiche WebLink

Home Browse Search

l ~-. of. . ':'J .."'I'~ OPEllATION ANIJ MAINTEN,INCE ]9 Under these agl'eements, the Parker power plant which is sup- plying power primarily to the Salt River Valley, Phoenix, Tucson. the lower Gila Valley, and Yuma areas in Arizona, and to the Im- perial Valley in California, was operated in parallel with the Dis- trict's system throughout the greater part of the year. The inter- change arrangements permitted operation of the Parker plant at full capacity and resulted in the utilization of a considerable amount of energy from Parker Dam which otherwise would have been spilled. An equivalent amount of water was conserved in Lake Mead. This proceRS i" re,'ersible and the resources of the Arizona systems were supplemented from Boulder whenever power was available from that source and required in the State of Ari- zona or in Imperial Valley, California. The net result of the inter- change during the fiscal year was the accumulation of a credit amounting to 48,175,110 kwhI' in favor of the Parker system. The metallurgical plant of Basic Magnesium, Inc., and the U. S. Army at Hayfield also received energy from the District's line as customers of the Parker Dam power project, such energy being considered as having been generated at the Parker power plant. DuJ'ing the fiscal year, Parker power was required by Basic Mag- nesium, Inc. only at such times as the generating capacity available at Bonlder was insufficient to 8lIpply the demand on the District.s system, including the power load for the production of metallic magnesium and by-products. It therefore was necessary to main- tain a record of such demands and generating capabilities in order to determine, in conformity with the terms of the controlling con- tracts, the amount of energy to be paid for at Parker rates by De- fense Plant Corporation for the use of Basic Magnesium, Inc., as distinguished from energy to be paid for at Boulder rates. The difficulty in making such a distinction illustrates the complications incidental to the process of interchange and integration. Delivery of power from the District's system to Basic lIhlgne- sillm, Inc. was continuous throughout the year, reac.hing a n1axi- mum of 195,500 kilowatts in November 1943. However, fonr of the ten metal-producing units were shut down toward the end of the fiscal year and the maximum power demand for the month of June 1944 was reduced to 137,700 kilowatts. The total amount of energy used by the plant during the operating year June 1, 1943 to May 31, 1944 was 1,566,885,317 kilowatthoul's. Of thb total, 1,365,873.789 kwhI' were taken from the District's allotment, 147,000,000 kwhI' from the allotment of the State of Nevada, and 54,011,528 kwhI' from the Parker power plant.