20071217 - Western Electricity Coordinating Council

From 0000-1600 the Path 15 is limited to 4,800 MW south to north due to Los Banos-Midwayand Gates-Midway series capacitors annual maintenance.From 0000-2400 the Path 44 is limited to 1,650 MW north to south due to the TL 230-02/230-10N-2 contingency. From 0700-1600 the Path 44 is further limited to 1,520 MW north to south dueto the San Luis Rey-San Onofre 230-kV line.From 0000-2400 the Path 45 is limited to 444 MW south to north due to reconductor work on TL23040 Miguel-Tijuana 230-kV line.From 0000-2400 the Path 49 is limited to 7,330 MW east to west due to the Navajo-Crystal seriescapacitors at Navajo and Eldorado-Moenkopi 500-kV line series capacitors.From 0000-2400 the SDG&E/CFE total import is limited to 2,300 MW due to San Onofre(SONGS) Unit No. 2 refueling outage. From 0700-1600 the SDG&E/CFE total import is furtherlimited to 1,900 MW north to south due to the San Luis Rey-San Onofre 230-kV lineOther Comments: NoneYesterday/Weekend/Holiday Notable Events: NoneYesterday’s Non-simultaneous Peaks, Reserves, and Generation Limitations at time of PeakArea Peak Demand 1 Actual Reserves 1 Req. Reserves 1 Gen. Outages/LimitationsNorthwest SC 53,611 12.2% 6,515 3,753 5,844RM/DSW RC 24,976 22.9% 5,712 1,748 5,506Calif./MX RC 38,646 12.3% 4,735 3,217 7,9521Peak demands, Actual and Projected Reserves and Required Reserves are non-simultaneous accumulations ofpeaks as reported by each area within each Reliability Center.Outlook for Tuesday:The Pacific Northwest Security Center reports temperatures are expected to be seasonal. Nooperating problems are anticipated. The Rocky Mountain/Desert Southwest Reliability Centerreports temperatures in the DSW region and the Rocky Mountain Region are seasonal. No operatingproblems are anticipated. The California/Mexico Reliability Center reports seasonable temperaturesand loads. No operating problems are anticipated.The system conditions described in this report may change suddenly at any time. This report isbased on information provided by the three WECC Reliability Centers and the WECCmembers.H:\SCCDaily\20071217doc