1. 2011 Residential HAN Pilots Evaluation Results © 2011San Diego Gas & Electric Company. All copyright and trademark rights reserved. 1

2. Overview Description of Pilots Evaluation Findings Conclusions & Recommendations 2

3. Pilot Descriptions 3

4. Low-Income IHD and PCT Pilots Criteria – Average monthly usage of at least 275 kWh – Participated in ESA (LIEE) between 2006 and 2010 – Single-family homeowner – High-speed internet service with modem and available port on router – Working Air Conditioner – No Medical Baseline customers Participation – Opt-in – Received equipment at no charge 4

5. Simultaneous RACT Pilot Average monthly usage of at least 700 kWh Also received plug load controllers Invited to participate in energy-saving contest with prizes 5

6. Pilot Features Low-IncomeRACT IHDPCTIHDTECH Enrollment MethodOpt-in Enrollees2736610899 Websitexxxx IHDx xx PCT x x PLC x Event Day Noticexxxx Incentive Contest xX 6

7. In-Home Display 7

8. Programmable Communicating Thermostat 8

9. Energy Management Website Hosted by third party Allows participant to: – See usage, cost, and price – Manage devices in the home/premise – See Demand Response events in progress and pending – See messages sent from utility to devices 9

10. Energy Management Website 10

11. Energy Management Website 11

12. Energy Conservation Emails Sent to roughly half participants in each group Four emails over summer 2011 Included energy saving tips and information 12

13. Findings 13

14. Energy Savings On average, energy savings for low-income pilots were not measurable – Comparison with previous summer usage – Statistical analysis controlling for weather, time of installation and seasonality Minimal savings were found for RACT participants Highest savings were found for RACT contest participants – Received more feedback on usage – Competed for prizes 14

15. Demand Response Impacts Analyzed by groups – Device disconnected or signal not received – Signal received but thermostat not turned on – Signal received but customer opted out – Signal received and thermostat raised 4 degrees Usage on event day compared to Baseline – Highest 3 of previous 5 days 15

16. Demand Response Impacts, continued Events on Sept 6 th, 7 th and October 13 th Measureable impacts for group that received signal and raised thermostat: – 6.21 kW on first event (September 6 th ) – No impacts on Sept. 7 th – Minimal (1.6 kW) on Oct 13th 16

17. Process Evaluation Data CollectionIHDPCT Staff interviews>6 Initial impression email survey11820 Post-event email survey56N/A Follow-up in-depth interviews10 SDG&E Email Surveys Plus Research Into Action Interviews 17

18. Participant Expectations Participants reported they wanted to be on pilot to – Track their energy use (60%) – To save money (35%) – To use new technology (20%) 18

19. Useful Features 19

20. IHD Experience Most checked it frequently (70% at least once a day) Consistent use over time (62% same or more often) 38% did not like the aesthetics or design 27% desired additional functionality 20

21. PCT Experience Some thought it saved energy (4 of 10) Most agreed it was easy to use (6 of 10) Most were ok with allowing SDG&E to adjust the thermostat during an event (6 of 10 agreed and remainder were neutral) 21

22. Participant Attitudes 22

23. Conclusions & Recommendations 23

24. Recommendations: Identify strategies for providing information progressively. Information Considered Valuable 24

25. Recommendations: Demand response communication should be different from everyday messages about conservation. For energy savings, additional communications and/or incentives may be needed For demand response, more direction on what to do during an event may be needed Clarify DR versus EE messages 25

26. Recommendations: Prioritize ease of use when selecting products. Investigate opportunities to improve the user interfaces Improve device usability and interface 26

27. Recommendation: Continue quality control and technical support efforts to ensure that devices stay connected and functional Improve Connection Issues 27

28. Recommendations: Manage participant expectations of general energy savings – some thought the device itself saved energy. Program PCTs to meet household needs; some participants wanted their house warmer. Program PCTs and Explain Function 28

29. Questions? 29