WSP03268

• File Number: 8220.101.10
• Description: Colorado River-Water Projects-Glen Canyon Dam/Lake Powel-Glen Canyon Adaptive Management
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 1/1/1993
• Title: Western Area Power Administration-Issues for Discussion-Proposed SLCA/IP Firm Power Rate Adjustment
• Water Supply Pro - Doc Type: Report/Study

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01235

November 19. 1993

Assumptions for GROD In Power Projections

Issue

Western is examlnlng some of the past practices and assumptions used to
develop long-range annual power projections for the CRSP and SLCA/IP PRS.
One component to be examined includes Western's assumptions for future
long-term firm sales. or Contract Rates of Delivery (CROO) and certain
short-term load obligation adjustments.

Background

. CROD's are those amounts of capacity and associated energy that
Western is contractually obligated to deliver to firm power
customers over a specified period of time.

. Based on preceived mutual benefits. Western has agreed to
contractua 1 amendments that "1 ayoff". or temporarily suspend.
Western's contractual obligations to certain small customers and one
G&T in New Mexico. The need for such a layoff became apparent
following the Court-ordered reduction in firm commitments to pre-
1989 levels. when resultant allocations became increasingly
difficult to schedule.

. The current layoff (as of November 1993) to certain small New Mexico
customers is approximately 11 MW of firm SLCAIIP capacity. with
71.415 MWh of associated energy. As defined within the amendment.
the duration of the layoff will remain in effect from June 1991
until the implementation of the final Record of Decision in
Western's Power Marketing EIS. or upon at least 60-days advance
notice by Western or by 90-day advance written notice by the
customer.

. Another s i mi 1 ar contractua 1 1 ayoff arrangement is currently in
effect with a New Mexico G&T. This amendment al10ws seasonal
reductions in CROD upon at least 60-days advance notice to Western
in advance of each season. and shall remain in effect until the
implementation of the final Record of Decision in Western's Power
Marketing EIS. Historically. this layoff has been as large as 37 MW
in the summer with 75.980 MWh of associated energy. Currently, no
1ayoff is in effect.

. The Record of Decision for the Power Marketing EIS is expected in
early 1995. following completion of the Glen Canyon Dam EIS. The
EIS suggests a range of possible marketing commitments.

. DOE Rate Order 6120.2 requi res that in prepari ng power repayment
studies, "contractual commitments that are estimated to exist..."
should be included in forecasts of revenues and expenses.