WSP02536

• File Number: 8220.200.05.R
• Description: Hoover Dam/Lake Mead/Boulder Canyon Project
• Basin: Colorado Mainstem
• Date: 10/31/1938
• Author: Roberts A. B.
• 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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to 1,523,000,000 kw-hrs. delivered at Los Angeles. The
s~fe delivered capacity of tho two circuits is 240,000 kw.
As previously m<.Jntioned under the hending "Hydro versus
SteD.Dl Plants", this 240,000 kw. should be 70% of the system

pcnk, the ro~~inlng 30% to 00 cnrriod by steam plant, from

w~ich it is determined that the system peak should be

343,000 kw. and the ste,~ pe~k 103,000 kw. for lowest de-

livered cost of 8n~r6Y to tho system. 343,000 kw. peak at

a load factor of 55% would require 1,652,000,000 kw-hrs.

per yoro.r. of which 1,523,000,000 kw-hrs. :'.re obt,",ined from

:9ouldor D.~m, L.l ".ving 129,000,000 kw-hrs. to be gunerntod

by steron plant.

This transmission system would require, ~s reserve,

.

ste~ plant c,~acity equivalent to one transmission circuit,

or 120,000 kw. In addition, thoro would be required 103,000

kw. of steam peaking plus 20% reserve, mnking a total of

244,000 kw. of ste~m plant, manufacturer1s rated capacity.

With this system as a basis, and applying the unit

costs as s~t forth hereinbefore, the investment costs were
obtained for each of the following separately: Generating
machinery at Boulder, Boulder Transmission Line including

switching and rec~iving stations, and steam plant.

Tho barrels of fuel oil consumed per year in the
steam plC'.nt vrr>.s bro.sod upon the: formula 0.4 of a barrel of
fuel oil per yero.r per kilowatt of steam plant capncity,

.

A. B. Roberts