WSP08998

• File Number: 8220.200.05
• Description: CRSP - Boulder Dam
• Basin: Colorado Mainstem
• Water Division: 1
• Date: 10/31/1938
• Title: Report of Competitive Value of Falling Water for Primary Energy at Boulder Dam in Competition with Steam Power at the Load Center
• Water Supply Pro - Doc Type: Report/Study

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a c parison of the value of falling water for primary

ene y.

For this purpose I have assumed a maximum of
4,87 ,000,000 .kw-hrs. per year at Boulder and an average
of 4 080,000,000 ~N-hrS. of primary energy per year,
equi alent.to 3,774,000,000 kw-hrs. delivered at Los An-
gele , allowing for 71% transmission losses. This energy;
woul require a maximum peak of 987,500 kw. at Boulder Dall)
and a peak of 913,437 kw. at Los Angeles with 7~.% loss.
The n mber of generating units at.Boulder required during
periO s of low water at 66,000 kw. per unit would oe 16
units, l5 active units plus 1 spare. During perious of
high ter, at 82,500 kw. per unit, there would be required
l3 uni s, l2 units plus one spare, for$enerating primary
energy alone, the remaining units being available for
genera ing secondary energy. Based upon a delivered
capaci y of 120,000 kw. per circuit, 7~ circuits would be
requir d to deliver the maximum capacity. However, as a
practi .1 sitUation one group of 3 circuits will handle
390,000 kw. and 2 groups of 2 circuits each will handle
480,000 kw., or a total of 870,000 kw., therefore, ? cir-
cuits w re used in my study.

As ~~s been previously discussed, I have used

840,000 kw. of steam standby, which, in my opinion, is

the ver minimum for relitibility of transmission for the

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A. B. Roberts

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