1. Western Electricity Coordinating Council 1 WECC MIC Meeting Report on Operating Transfer Capability Policy Committee (OTCPC) Albuquerque March 6 & 7, 2008

2. Western Electricity Coordinating Council 2 Major Topics – 2008 Spring Study Results -- California / Mexico Subregion -- Northwest Subregion -- Southwest Subregion -- Rocky Mountain Subregion – MIC issues

3. Western Electricity Coordinating Council 3 California / Mexico Subregion – Spring 2008 Path NamePath Number Rating (MW) Proposed 2008 Spring OTC (MW) 2007-2008 Winter OTC (MW) 2007 Spring OTC (MW) California COI (N-S) 664800 (N-S) PDCI (N-S) 653100 (N-S) Midway - Los Banos (S-N) 155400 (S-N) SCIT NA1936515,200*15,150*14,600* Midway - Vincent (N-S) 264000 (N-S) The increase in SCIT is mainly due to the new Miguel – Sycamore #2 230 kV line, which came in service late 2006, the new Miguel – Old Town 230 kV line, and 2x63 MVAr shunt capacitors at Miguel 230 kV.

4. Western Electricity Coordinating Council 4 Northwest Subregion - Spring 2008 Path#Rating MW 2007 Spring OTC 2007 Summer OTC 2007-2008 Winter OTC 2008 Spring SOL Alberta – BC 11000 E-W 1200 W-E 1000 E-W 1160 W-E 1000 E-W 1160 W-E 1000 E-W 1160 W-E 1000 E-W 1160 W-E Northwest – Canada 33150 N-S 2000 S-N 3150 N-S 2000 S-N 3150 N-S 2000 S-N 3150 N-S 2000 S-N 3150 N-S 2000 S-N West of Hatwai 64277 E-W4090 E-W4065 E-W4036 E-W4250 E-W* Montana – Northwest 82200 E-W 1350 W-E 2200 E-W 1143-1257 W-E 2200 E-W 650-1250 W-E 2200 E-W 1070-1300 W-E 2200 E-W 1143-1257 W-E Idaho – Northwest 142400 E-W 1200 W-E 2304 E-W 1150 W-E 2304 E-W 1090 W-E * 2304 E-W 1200 W-E 2304 E-W 1150 W-E Sierra – Idaho 16500 N-S 360 S-N 500 N-S 262 S-N 500 N-S 262 S-N 500 N-S 262 S-N 500 N-S 262 S-N Borah West 172557 E-W 2557 E-W* Montana – Idaho 18356 N-S 337 S-N 356 N-S 337 S-N 356 N-S 250-270 S-N* 356 N-S 256 S-N* 356 N-S 337 S-N Bridger West 192200 E-W

5. Western Electricity Coordinating Council 5 Northwest Subregion - Spring 2008 cont. Path#Rating MW 2007 Spring OTC 2007 Summer OTC 2007-2008 Winter OTC 2008 Spring SOL Path C201000 N-S 1000 S-N 820 N-S 775-900 S-N 820 N-S 775-900 S-N 820 N-S 785-900 S-N 820 N-S 775-900 S-N Sierra – PG&E24160 E-W 160 W-E 105 E-W 100 W-E 105 E-W 100 W-E 150 E-W 70 W-E 105 E-W 100 W-E Sierra - Utah32440 E-W 235 W-E 343 E-W 235 W-E 370 E-W 235 W-E 370 E-W 235 W-E 343 E-W 235 W-E Brownlee East531850 W-E PDCI653100 N-S 3100 S-N 3100 N-S 2200 S-N 3100 N-S 2200 S-N 3100 N-S 2200 S-N 3100 N-S* 2200 S-N COI + NW- Sierra664800 N-S 3675 S-N 4800 N-S 3675 S-N 4800 N-S 3675 S-N 4800 N-S 3675 S-N 4800 N-S* 3675 S-N North of John Day73Not Rated8000 N-S7800 N-S7700 N-S8000 N-S Midpoint – Summer Lake751500 E-W 400 W-E 1500 E-W 400 W-E 1500 E-W 400 W-E* 1500 E-W 400 W-E 1500 E-W 400 W-E Northwest-Sierra76300 N-S 300 S-N 300 N-S 300 S-N 300 N-S 300 S-N 300 N-S 300 S-N 300 N-S 300 S-N

6. Western Electricity Coordinating Council 6 Northwest Subregion - Spring 2008 cont. Path#Rating MW 2007 Spring OTC 2007 Summer OTC 2007-2008 Winter OTC 2008 Spring SOL Montana- Southeast 80Not Rated N-S Not Rated S-N 600 N-S 402-600 S-N HL 432-600 S-N HL 600 N-S* 282-600 S-N* 600 N-S 462-600 S-N* 600 N-S 278-600 S-N* COI + NW – Sierra + PDCIN/A7900 N-S 6775 S-N 7900 N-S 5875 S-N 7900 N-S 5875 S-N 7900 N-S 5875 S-N 7900 N-S* 5875 S-N *SOL Studies were performed for the operating season

7. Western Electricity Coordinating Council 7 Rocky Mountain Subregion – Spring 2008 PathRating (MW) 2008 Spring OTC 2007-08 Winter OTC 2007 Summer OTC 2007 Spring OTC 2006-07 Winter OTC Yellowtail – N510 Yellowtail – S625 TOT1A650 TOT2A690660* 690*660*690* TOT316051506*** 1536**15901521 TOT51680 TOT7890 WITH NUCLA AT 80 MW AND SW COLO LOAD 100 MW ** Miracle Mile-Laramie and Beaver Creek-Hoyt Construction Outages *** Snowy Range-Cheyenne Construction Outages

8. Western Electricity Coordinating Council 8 Southwest Subregion – Spring 2008 PATH NAMEWECC PATH NUMBER RATING OF PATH (MW) 2008 SPRING SOL 2007 SPRING SOL 2007-08 WINTER SOL Four Corners West222325MW Nominal (Nomogram) 2325MW Nominal (Nomogram) 2325MW Nominal (Nomogram) 2325MW Nominal (Nomogram) Cholla-Pinnacle Peak 501200MW

9. Western Electricity Coordinating Council 9 Implementation Time Schedule These limits apply to the 2008 spring operating season starting April 1, 2008, and ending no later than May 31, 2008 pending completion of: –The Operating Procedures Review Group’s acceptance of the associated winter operating procedures for each of the interties and those operating procedures (including system monitoring and curtailment responsibilities) being implemented, and –Operating training and direction required to ensure operation within the established operating limits.

10. Western Electricity Coordinating Council 10 MIC Issues? QUESTIONS or COMMENTS to OTCPC