WSP02437

• File Number: 8220.100.50
• Description: CRSP - Power Issues
• Basin: Colorado Mainstem
• Date: 1/1/1982
• Author: West. Sys. Coord. Co
• Title: Western Systems Coordinating Council Ten-Year Coordinated Plan Summary 1982 - 1991
• Water Supply Pro - Doc Type: Publication

the outage in Utah which affected the entire state and ,small areas
in neighboring states. Most of the load interrupted was restored
during a period ranging from 2i to 7i hours.

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64

CURRENT AND ANTICIPATED 1982 SYSTEM CONDITIONS

. Reserve margins and fuel supplies appear adequate in most areas;
however, Northern California will probably require assistance from
outside areas to meet minimum reserve requirements during the summer
due to the delay in licensing the Diablo Canyon Nuclear units and
the shutdown of Rancho Seco.

. Columbia River January-July runoff was projected in April to be
approximately 119% of the 15 year average.

. The delay of new coal-fired and nuclear generation facilities and
transmission facilities will continue to have an adverse impact on
system reliability and the region's fuel oil requirements.

. Net resource additions projected to be placed in service include
2184 MW of nuclear, 1564 MW of coal-fired, 954 MW of pumped
storage, and 933 MW of hydro.

. Major transmission additions are scheduled for service in the
Northwest Power Pool Area (Utah 345 kV lines) and California-
Nevada Area (Palo Verde-Devers 500 kV).

SYSTEM DEVELOPMENTS 1983-1991

. The 1981-1991 average annual compound peak and energy load growth
rates for- the region are projected to be 3.4% and 3.5%,
respectively.

. Based on the planned facilities and projected load growth, reserves
and energy supplies are projected to be adequate throughout the WSCC
region through 1991. There is some concern, hQwever, that
unforeseen major new loads (associated with improved economic
conditions, oil shale development, etc.) coupled with resource
delays due to financing, regulatory or environmental delays will
affect system reliability and could result in power supply
deficiencies in the next ten years.

. WSCC generation additions planned through 1991 (45,680 MW) include
22,485 MW (49.2%) coal-fired capability and 12,300,MW (26.9%)
nuclear capability.

. Opportunities for additional interarea transfers dictate the need to
assure that the region's future transmission additions are
coordinated from a regional perspective and placed in service in a
timely manner in face of financial, regulatory and environmental
challenges to utilize the region's facilities in the most economical
manner.