WSP06362

• File Number: 8210.470
• Description: Pacific Southwest Interagency Committee
• State: CO
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 11/1/1971
• Author: PSIAC
• Title: Pacific Southwest Analytical Summary Report on Water and Land Resources based on Framework Studies of Four Regions - November 1971
• Water Supply Pro - Doc Type: Report/Study

Electric Power

1965 1980 2000 2020
Figure 16.-Projected electric power development.

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All of the conventional hydroelectric power will
be developed in the first two time frames. l'umped
storage plants for peaking will be developed in all
periods. Fossil.fueled steam.electric power will also
be developed in all periods and may be either peaking
or base load. Slightly more than 42,000 megawatts
are planned in the Upper Colorado Region before
2000, with more than 80 percent of the peak
capacity available for export in 2020. About
two.thirds of this export will go to the other three
regions, and one-third will be transmitted to the
Pacific Northwest and to the Midwest and East.
Plants for nuclear.fueled steam-electric power also
are to be constructed in all time frames. They will be
used largely for base load and will displace some base
load fossil.fueled plants which will then be used to
provide peaking demands. As nuclear.fueled
powerplants increase, changes in their output will be
required to match system output to system load.
Steam.electric plants (fossil and nuclear) will
provide more than 90 percent of the total capacity in
2020 and will use large amounts of cooling water.
Most steam-electric plants will be located along the
California coastline. Wet cooling towers or cooling
ponds will be provided for plants located at inland
sites. The total amount of fresh water consumed

54

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1965 1980 2000 2020

Figure 17.-Electrlc power generation and transmis-
sion installation cost.

(1.26 million acre-feet) is important in the arid inland
portions of the Pacilic Southwest.
Major transmission lines utilizing 890,000 acres of
land will be required to carry exported power or
interchange power from generation to load, or from
region to region. These lines may be operated at
voltages up to 1,100 kilovolts.
The power system and generating systems planned
in the four regions will meet the projected needs of
the Pacific Southwest and provide export power -
11 ,600 megawatts of capacity. .