© 2004 San Diego Gas and Electric. All copyright and trademark rights reserved Demand Response Programs Backup Material

2 Day-Ahead Programs Critical Peak Pricing (CPP) Discounted rates during non-CPP event periods Higher rates during CPP event periods California Power Authority - Demand Reserves Partnership Capacity + Energy payments for demand response Managed through third-parties Demand Bidding Program (DBP) Financial incentives ($/kWh) for demand response C/I 20/20 Peak Day 20% bill discount for 20% load reduction during peak days CPUC Goal – 5% 2007

3 Day-Of Programs AL-TOU-CP Discounted rates during non-AL-TOU-CP event hours Higher rates during AL-TOU-CP event hours 15-minute notification Direct Load Control – Comverge Automatic control of A/C, water heaters and/or pool pumps Clean Back-up Generation – Celerity Utilizes retrofitted or clean-burning back-up generators Base Interruptible Program (BIP) Capacity payments for committed load reduction Penalties may apply 15-minute notification Residential Smart Thermostat Automatically raises thermostat during critical events Statewide Pricing Pilot (SPP) Pilot to determine price elasticity Rolling Blackout Reduction Program (RBRP) Utilizes back-up generation during CAISO Stage 3 Emergencies

4 Day-Ahead Programs Demand Bidding Program Critical Peak Pricing (Proposed) California Power Authority DRP C/I Peak Day 20/20 Residential & Small Commercial 20/20 Technical Assistance / Technology Incentives 1 MW 25 MW 5 MW 15 MW 7 MW 15 MW 68 MW

5 Day-Of Programs Commercial/Industrial : ~47 MW AL-TOU-CP 2 MW Clean Back Up Generation Program – Celerity 10MW Direct Load Control – Comverge 7 MW Rolling Blackout Reduction Program24MW Base Interruptible Program 6 MW Critical Peak Priding – Emergency (Proposed) 5 MW Residential: ~4 MW + Conservation Cushion Direct Load Control – Comverge2 MW Smart Thermostat Program2 MW Community Awareness Campaign Flex Your Power NOW! Emerging Markets Community Partnerships Water District Partnership – Analysis