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<br /> <br />Green Mountain Dam and Reservoir. <br /> <br />Green Mountain Power Plan~ (1938-1943), located at the base <br />of Green Mountain Dam, utili.zes the regulated streamflow and the <br />waters released from Green Mountain Reservoir to generate electric <br />erwrgy. Construction of this power plant was expedited under war- <br />time provisions to increase power prod.uction for war industries <br />and military establishments in the area. FulJ. operation of the <br />plant began on May 18, 1943, and power was transmitted. over a <br />27.1-role Government-constructed transmission line to Dillon. The <br />annual output of this plant averages 68,000,000 kilowatt-hours, <br />the greater percentage of which has beenmerketed to the Public <br />Service Company of Colorado and to communities and municipalities <br />adjacent to the Green Mountain-Grand Lake Transm1ssion Line. <br />Power was furnished for construction operations on the project <br />and will be furnished. for operation of the Granby Pumping Plant. <br /> <br />The power plant contains two vertical, 3-phase, 60-cycle, <br />generating units, with an installed capacity of 21,600 kilowatts <br />powered. by two 14,500-horsepower.hydraulic turbines operating <br />und.er a variable hydraulic heBd ranging from 108 to 258 feet. The <br />turbines are supplied by means of the two 102-inch plate-steel <br />penstock-outlet pipes that lead from the gate-chamber in the out- <br />let tunnel. The power plant switchyard is equipped with three <br />4,000 kva, single phase, 6.9/69 kv transformers on each generator;three 8,000. kva, single phase, 69/ll6 kv for the transmission line <br /> <br />9 <br />