9600

• UCREFRP Catalog Number: 9600
• Author: Brown and Caldwell.
• Title: Phase 2 Coordinated Facilities Water Availability Study for the Endangered Fishes of the Upper Colorado River - Final Report.
• USFW Year: 2003.
• USFW - Doc Type: \
• Copyright Material: NO

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piscatorial purposes. The necessity and frequency of obtaining such a junior water right must be
determined before implementing any of the alternatives.
2.3.9 Electric Power Purchase and Sales Prices
Electric power purchase and sales prices were obtained from the Western Area Power
Administration (WAPA) for estimating the value of power generation foregone at Green Mountain
Reservoir as a result of the alternative investigated in this report and the Technical Memoranda
(personal communication from John Gierard, WAPA, to Leo Eisel and Bruce Rindahl, January 23,
2001). The sales prices were used in evaluating foregone power generation at both Shoshone and
Green Mountain Power Plants. The Executive Committee requested at the April 6, 2001 meeting
that the consultant submit the power rate schedules employed in the analysis to WAPA and to Excel
Energy for comment concerning the appropriateness of these rate schedules for use in the analysis
and specifically concerning the cost of replacement power. At the time of publication of this report,
the consultant had not received a response to the May 2001 request to WAPA and Excel Energy
concerning this matter.
2.3.10 Hydropower Maintenance Schedules
The normal maintenance procedure for Green Mountain Reservoir is two outages (one for each
unit) of 4-5-weeks each. Typically one-of--the-outages is- in January-and-the-other in March. The units
are not normally worked on at the same time thus maintaining capacity to deliver water through at
least one unit.
Ruedi Reservoir hydropower facilities are generally maintained during a period of approximately
two weeks sometime during the year. There is no set schedule for when these two weeks will occur
' during the year (personal communication with Phillip Harris, High Country Engineering,
September 12, 2001).
A typical maintenance schedule for Shoshone Power Plant will have Unit A out for January and Unit B
out for February. The C1 Data Set scenario, however, assumes that power generation facilities are
always available at full capacity and does not acknowledge these periods of downtime for maintenance.
1 In the analysis herein, the total kilowatt-hours of power generation were calculated for the Cl Data
Setline scenario and compared to the calculated total kilowatt-hours generated with the alternative
scenario. Therefore, the two scenarios were affected equally by the Cl Data Set data set's lack of
simulation of the hydropower maintenance periods.
Maintenance schedules for hydropower generation facilities at Green Mountain and Ruedi Reservoirs
' and the Shoshone Power Plant were not incorporated into StateMod and the C1 Data Set because
hydropower generation is not specifically modeled by StateMod for Green Mountain and Ruedi
' Reservoirs. Hydropower generation is, however, specifically modeled for the Shoshone Power Plant
in StateMod. Consequently, the maintenance schedule for the Shoshone Power Plant was included in
the Cl Data Set Third Revision and subsequent revisions.
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