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<br />Income from the sale of Hoover Dam
<br />power has risen steadily. Revenue from
<br />October 26, 1936, to May 31, 1942,
<br />was more thall $21 million, and revenues
<br />for the operating years 1943 through
<br />1965 averaged more than $8 million an-
<br />nually. Beginning in 1965. the revenues
<br />amounted to over $10 million annually
<br />until 1970. when they sUlvassed the $11
<br />million mark ttH. the first time.
<br />During 45 years of operation, June I,
<br />1937, through May 31, 1982, total
<br />revenue from all sources was
<br />$471,074,224. Up to May 31, 1982,
<br />$215,365,591 had been retumed to the
<br />Unitcd States Treasury: $128,692,485 for
<br />intcrcst and $86,673,106 for principal.
<br />Operating costs account For the remain-
<br />ing revenue.
<br />Commercial power generation at
<br />Hoover Powerplant began October 26,
<br />1936, when unit N-2', the first of four
<br />generating units then being installed,
<br />began serving the Los Angeles
<br />metropolitan area.
<br />By the end of 1936, units N-4 and N-I
<br />had also been installed; unit N-3 was
<br />placed in operation in 1937.
<br />These units serve the cities of Los
<br />Ange]es. Glendale, Burbank, and
<br />Pasadena. California. and Las Vegas and
<br />Boulder City, Nevada.
<br />In August 1937, unit A-8 went into
<br />operation for the Califc)fflia Electric
<br />Power Company. a private utility supply-
<br />ing customers in Nevada and southern
<br />California. Power generated by this unit
<br />now serves Southern California Edison
<br />Co. cllstomers.
<br />In 1938, units N-5 and N-6, installed
<br />for the Metropolitan Water District of
<br />Southern California. were operating.
<br />Energy generated by these units is used
<br />primarily for pumping Lake Havasu
<br />water into and along the district's Col~
<br />Ol'ado River Aqueduct. Energy not re-
<br />quired for pumping may be sold to
<br />municipalities and utilities.
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<br />Near!.}' /3 million people ill the Southwest depend 011 Colorado River water stored by Hoover or Parker Dams
<br />for part of their daily supply.
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<br />The Southern Califomia Edison Co.,
<br />which serves seven counties in southern
<br />California, exclusive of the city of Los
<br />Angeles, was to begin receiving power
<br />from the plant by June I, 1940. But a
<br />power shortage in the area served by
<br />Edison speeded installation of units A-6
<br />and A-7, supplying energy to the com-
<br />pany by the end of 1939.
<br />At the close of 1939, with an installed
<br />capacity of 704,800 kilowatts, Hoover
<br />Powerplant was the world's largest
<br />hydroclectric facility.
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<br />With the outbreak of World War II,
<br />installation of additional generating units
<br />at Hoover Dam accelerated. By October
<br />1944, units A-I, A-2, A-5, and N-7
<br />were operating. The plant's capacity was
<br />1,034,800 kilowatts when the war ended.
<br />Units A-] and A-2 supply power
<br />mainly t9 Los Angeles, but also help sup-
<br />plement power supplics of the Federal
<br />Government and the State of Nevada. Unit
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