Statewide Single-Family Rebate Program Evaluation: Lighting

1. Statewide Single-Family Rebate Program Evaluation: Lighting CALMAC/MAESTRO Meeting San Francisco, CA July 26, 2006 Tami Rasmussen tami.rasmussen@kema.com

2. Overview of Presentation • Program background • Recent evaluation results that pertain to lighting • CFL Metering Study • Consumer and supplier lighting market characterization • 2004-2005 program evaluation scope

3. Single-Family Rebate Program: Lighting component background • Statewide program: PG&G, SDG&E, So Cal Gas, SCE • 1998 market transformation initiative - California Residential Lighting and Appliance Program • 2001 resource acquisition focus: over 8 million CFL product incentives • 2002-2003 Statewide Crosscutting Residential Lighting Program – 4 million CFL product incentives per year

4. Single-Family Rebate Program: Lighting component background • 2004-2005 Statewide Single-Family Retrofit Program • 10 million CFL product incentives per year (procurement funding accounts for half) • 92% of energy savings goals met through lighting measures

5. CFL Metering Study – Objective and Approach • Update CFL energy savings parameters • Monitor interior fixtures with CFLs to obtain time-of-use data • Sample frame: CA residents with CFLs installed, 7 regional strata from San Diego to Chico • Sample size: 375 homes, 891 interior fixtures, 983 CFLs • Monitoring: on/off time and date stamp light meters; 6-12 months of metering from June 2003 – October 2004

6. CFL Metering Study – Results • Average hours of use: 2.3 hours per day for interior fixtures • No different from standard lighting usage (based on 1997 HMG study) • Drivers of variation: • Room type • Fixture and control type • CFL vintage • Usage peaks between 8 and 9pm; less than 10% of CFLs operate during summer weekday afternoons

7. Lighting Market Characterization – Objectives and Approach • 2002 Statewide Crosscutting Residential Lighting Program evaluation • Update prior consumer and supplier lighting market characterizations • 1000 residential population surveys (split evenly between CFL purchaser/non-purchaser) conducted in June 2003 • 50 market actor interviews conducted in June 2003

8. Lighting Market Characterization – Key Consumer Findings

9. Lighting Market Characterization – Key Supplier Findings • Prices have declined – wholesale below $1, retail between $2-$3 (down from $6 in 2001) – most manufacturers expect prices to decline further • Product diversity has increased – more manufacturers in the market; more designs, shapes and sizes of CFLs; elimination of objectionable features such as oversized bulbs, poor light quality, color rendering

10. Lighting Market Characterization – Key Supplier Findings, continued • Most products are ENERGY STAR certified • Expectations for increased sales in the future due to declining price and expanding diversity

11. 2004-2005 Single-Family Program Evaluation Scope: Lighting • Consumer CFL survey (CFL purchaser and non-purchasers) • Interviews with lighting retailers, manufacturers and stakeholders • Process evaluation • Gross impact assessment (on-site surveys with CFL purchasers from 2004-2005) • CFL Net-to-gross assessment (TBD – may include a combination of approaches)

12. Full reports available at www.calmac.org CFL Metering Study: www.calmac.org/publications/2005_Res_CFL_Metering_Study_Final_Report.pdf Evaluation of the 2002 Statewide Crosscutting Residential Lighting Program: www.calmac.org/publications/2002_Statewide_Res_Lighting_Final_Report.pdf