1. Brett Wangen WECC RC WECC Winter 2011/2012 SOLs MIC Meeting - October 14, 2011

2. 2 WECC RC lead meeting on September 27th, 2011. o Reviewed the new process to be followed for accepting seasonal SOLs. o Previous OTCPC members were in attendance as well as the Sub-regional study leads. o Seasonal SOL study results were reviewed, SOLs accepted. SOL tables on WECC website under “Library” > “OTC” > … Post OTCPC Era

3. New Process

4. California/Mexico

5. Northwest WECCWECC Path 2011-122011 2010-11 PATH Catalog RatingPathWinterSummerSpringWinter Path DescriptionNO.MWLimitationSOL (MW) 2400 E-W Voltage Change & Thermal2400 E-W* Idaho - Northwest141200 W-E Reactive margin1200 W-E1090 (1200) W-E*1150 W-E*1200 W-E* Bridger West192400 E-W Voltage Change & Thermal2130-2400 E-W* 1) 2200 (2400) E-W*2200 E-W* 1600 N-S Voltage Change & Thermal1600 N-S* Path C201250 S-NThermal955-1250 S-N* 920 (1060)-1250 S-N*1250 S-N* PDCI653100 N-S Voltage stability & transient stability 3100 N-S*2970-3100 N-S* 2825-3100 N-S** 2890-3100 N-S** 3100 S-N2200 S-N*2200 S-N COI + NW - Sierra664800 N-S Voltage stability & transient stability 4800 N-S*4600-4800 N-S* 4375-4800 N-S** 4470-4800 N-S** 3675 S-N3675 S-N*3675 S-N North of John Day73(NR) 8400 N-S Voltage stability7700 N-S*7800 N-S*8000 N-S** 7360-7700 N-S** Hemingway - Summer Lake 1500 E-WThermal1500 E-W*1500 E-W1500 E-W* 75550 W-E Reactive margin400 W-E400 (550) W-E*400 W-E* (NR) 600 N-SThermal600 N-S*600 N-S Montana - Southeast80 (NR) 600 S-N (HL) Transient stability299-600 S-N*183-600 S-N (HL)278-600 S-N257-600 S-N (NR) 600 S-N (LL) Transient stability432-600 S-N*350-600 S-N (LL)278-600 S-N257-600 S-N West of McNaryUN 2870 (3500,4500)Thermal 2870 (3500,4500)* 2) E-W2870 E-W

6. Rocky Mountain

7. 7 No changes to Southwest winter SOLs. Studies are only run for summer season. o These SOLs are used for each season. Southwest PATH NAMEPATH NUMBER RATING OF PATH (MW)2012 WINTER SOL (MW) 2011 SUMMER SOL (MW) LIMITATION (For 2011 Winter) 2010 SPRING SOL (MW) Four Corners West222325MW Nominal (Nomogram) 2325MW Nominal (Nomogram) 2325MW Nominal (Nomogram) Thermal / Voltage (The limitation of the path depends where you are on the nomogram.) 2325MW Nominal (Nomogram) Cholla-Pinnacle501200MW Thermal1200MW

8. Questions 8