1. Gas and Electric Coordination Background Brad Bouillon Director, Regional Operations Initiatives

2. CAISO Gas and Electric Coordination Activities Shares information pursuant to non-disclosure agreements Sends hourly estimated gas burn profiles to pipeline companies each day Holds quarterly meetings to discuss outage impacts, and bi-weekly calls for status updates Conducts morning conference calls on cold days with gas operations counterparts on system conditions Page 2

3. FERC has Increased its Focus on Gas/Electric Inter- dependence Continues to reviews actions to Improve cold-weather grid performance Issues quarterly updates on gas-electric coordination Proposed Reforms to improve coordination of gas-electric scheduling Authorized natural gas pipelines and electric transmission operators to share non-public operational information to promote the reliability and integrity of their systems. Page 3

4. Gas/Electric Scheduling Coordination Differences Different flow rates Different true up methodology Different timelines Page 4

5. Page 5 D-2 TD D-1 0800 1600 0930 1100 1500 EcEc G c and p Proposed: Blue bottom Current: Orange bottom Potentially Changing Gas Timelines, Compared with Electric Market Timeline * - May change based on recent FERC/NAESB activities 1530 Balancing 1900 2000 7-days 1300 1000 1HR + 75m ATF X-days

6. Final Observations Ongoing effort Focus is on future system, process and communication improvements Page 6

7. Questions? Page 7