Puget Sound CFL Saturation Study

1. Regional Technical Forum Meeting November 9, 2007 Puget Sound CFL Saturation Study

2. Study Review Research Objectives & Questions Approach & Process Research Outcomes Key Findings Key Opportunities & Recommendations Where We Go From Here Presentation Overview 2

3. STUDY REVIEW 3

4. To quantify standard (one-inch) screw-base sockets and the current placement of CFL bulbs, by room, fixture type, and control type; and To quantify the saturation of CFL bulbs and assess consumer likelihood of installing additional CFL bulbs where they have not already done so. Research Objectives 4

5. Remaining Potential What is the remaining potential for CFLs by household, room, fixture type and control type? How much of this is technical potential and how much is attainable? Future Program Design How can the data and information collected through this study be used to plan future utility programs focused on residential lighting? Research Areas 5

6. Attainable Potential – the number of CFL bulbs individuals are willing to install today Achievable (long term) - could be influenced by programs or media messages Attainable (short term) - willingness to install CFLs today Technical Potential – the number of CFL bulbs individuals could install today Defining Potential 6

7. Secondary Research Review (Sept – Nov ‘06) Identified key research questions to ask Identified methodology pros and cons Mail-Based Survey (Nov ‘06 – June ‘07) Expert consult, pre-test & pilot-test Response bias check (telephone interviews) Data accuracy check (in-home audits) Study Approach 7

8. Introductory letter mailed to sample (Week 1) Survey packet mailed (Week 2…three days later) Cover letter Survey booklet Reference card Return envelope Incentive request card Reminder postcard mailed (Week 3) Respondents provided two weeks to return materials Survey Implementation Process 8

9. Telephone interviews conducted with 14% of (n=39) pilot non-respondents (285 out of 375 sent survey) In comparison to respondents, non-respondents are ~ 10 years younger Slightly more likely to own their house The same on income, education, housing type and gender Determined that no survey changes were required, survey implementation began Response Bias Check 9

10. Sample Disposition

11. In-home audits conducted with 10 SnoPUD pilot survey respondents ~40% under-reporting of sockets and CFLs installed Saturation levels unaffected Potential positive effect of utility staff presence on willingness to install CFLs Manual review of data From pilot: small change made to instruction card From full survey: threw out 4% of (n=70) surveys for “bad data” Data Accuracy Check 11

12. KEY FINDINGS & RECOMMENDATIONS 12

13. Key Finding #1 Opportunity exists for more CFL installations 13

14. Sockets, CFLs & CFL Saturation Levels *Average Household Saturation =Avg of all reported household saturation levels; (HH1Sat + HH2Sat + … + HH1488Sat) / 1488 **Total Service Area Saturation = (# of all CFLs in service territory) / (# of all sockets in service territory)

15. Recommendation #1 Encourage installation of additional CFLs throughout the house. 15

16. Remaining Potential, Household

17. Remaining Potential, Rooms (weighted)

18. Remaining Potential, Fixtures

19. Remaining Potential Planning Estimates

20. Remaining Potential Planning Estimates, Puget Sound Energy 20

21. Remaining Potential Planning Estimates, Seattle City Light 21

22. Remaining Potential Planning Estimates, Snohomish County PUD 22

23. Recommendation #2 Continue to facilitate consumer purchases through utility CFL rebate and coupon programs. 23

24. Consumer Purchasing Preferences - Coupons & Rebates

25. Key Finding #2 CFL programs should be targeted 25

26. Recommendation #3 Develop a strategy that focuses on encouraging individuals in the multifamily sector to try CFL bulbs for the first time. 26

27. Distribution of CFLs in Households

28. Zero CFLs - Demographic Comparison

29. Recommendation #4 Promote the use of CFL bulbs in low saturation rooms in marketing messages. 29

30. High Lighting Energy Use Medium Lighting Energy Use Low Lighting Energy Use Average Saturation Level by Room

31. Remaining Potential, Rooms (weighted)

32. Recommendation #5 Promote and provide information on all specialty bulbs currently available and continue efforts to promote development of specialty bulbs not yet available in the market. 32

33. Specialty bulbs = anything but standard screw base CFLs

34. 18% of sockets are in recessed cans “Surface mount or hanging” fixtures and “table or floor lamps” may also require specialty bulbs Sockets per Fixture Type, Household

35. Recessed can fixtures had saturation levels of 22% Saturation levels for sockets requiring specialty bulbs could not be calculated through this study Saturation per Fixture Type, Household

36. 20% of sockets are controlled by either dimmer, sensor or 3-way switches Specialty bulbs may be required to function with these controls Sockets per Control Type, Household

37. High energy use, low saturation room 45% of sockets controlled by dimmers Over 25% of household dimmer-sockets are located in the dining room Sockets per Control Type, Dining Room

38. WHERE WE GO FROM HERE 38

39. Utility Collaboration • Research • Lighting Research • CFL Saturation Update • Other Research • Other Programs • Marketing • Program Design/Delivery • Product Development • Specialty Bulbs • Other • Other? 39