T12 Replacements with HPT8s in Kitchens and Garages

1. T12 Replacements with HPT8s in Kitchens and Garages Regional Technical Forum October 15, 2013

2. Measure Overview • Measure requested by SRR subcommittee in 2012 • Experienced high penetration of linear fluorescent fixtures in rural kitchens • Requests: • 1-for-1 changeout to HPT8 lamps: • Other options also included: • 4’ 2-lamp -> 4’ 4-lamp changeout • 8’ 2-lamp -> 4’ 4-lamp changeout • Based on the prevalence of these configurations in the ETO commercial DI program • Assumption is that efficient case light output is similar to baseline • DIY delivery channel; • Staff developed as direct install; relies on program for delivery verification

3. Measure Overview • Presenting two measures using the same methodology, but will be separate categories • 4-foot T12 lamps – RBSA has enough data to reliably inform a baseline • Make-up 98% of linear fluorescent fixtures found in kitchens and 82% of linear fluorescent fixtures found in garages • Recommended as a Proven UES • 8-foot T12 lamps have much less data available • Less volume in market and in RBSA sample • Suggest 8-foot changeouts as a Small Saver UES

4. Staff Highlighted Areas • Storage/Removal/Takeback factors • Are T12 removal rates similar to CFL removal rates? • Baseline wattage & ballast factors • Low 8-ft sample sizes leads to using average wattage • Weighting between magnetic and electronic ballasts • Efficient Case ballast factors • Using ETO commercial data to determine most likely BF weightings in efficient case • Periodic replacement costs and EUL • Staff not including O&M benefits or costs, and setting EUL equal to period of baseline T12 lamp burnout

5. Savings Methodology • Open Workbook • HOU – Average for kitchens and garages from KEMA end-use study and DOE study. • Assumes T12 fixtures operate same number of hours as those with other lamp types • Baseline Lamp Wattage - Use average T12 lamp wattages from RBSA as baseline for each lamp configuration and room type. • Baseline Ballast Factor - Use BPA Lighting Calculator to determine ballast factor. • Simple average of Magnetic and Electronic ballasts in baseline • Efficient Case Fixture Wattage - Use wattage of common HPT8 fixtures from BPA lighting calculator (cross-reference to wattages found in RBSA data) to determine average efficient-case wattages for each lamp type. • Use HPT8 data from ETO commercial lighting tool to weight BF occurrences • Savings - Calculate delta watts for each lamp configuration, and obtain savings per year for each configuration.

6. Remaining Issues for RTF Discussion • Storage/Removal/Takeback factors • Other res. lighting measures use 4% removal rate based on consistent findings in market evaluations • Should we use the 4% CFL direct-install removal rate number as a proxy for T12 removals? • Or because of complexity of install compared to a CFL, are these less likely to be removed? • Is there data to support a removal rate? • Assume no storage or takeback for direct-install, similar to other res. lighting measures

7. Remaining Issues for RTF Discussion • Baseline wattage • 8 foot fixture baseline lamp wattage • 92% of 8’ fixtures are 2-Lamp • Kitchen – 2-lamp average = 94W (N=3 out of 4) • Garage – 2-lamp average = 78W (N= 62 out of 64) • All rooms types – 2-lamp average = 80W (N = 109 out of 118) • As reference, BPA calculator uses 95W for all 8ft fixtures • Need to decide to use either: • 2-lamp average wattages for all configurations (80W) • Separate wattages for kitchen and garage (94W, 78W)

8. Remaining Issues for RTF Discussion • Baseline ballast factors • Baseline ballast factors split 50/50 between magnetic and electronic • ~9% average increase using magnetic ballast only

9. Remaining Issues for RTF Discussion • Efficient Case ballast factors • HPT8 fixtures have many ballast combinations • RBSA does not provide info on ballast factors • Utilize 2006-2009 ETO Lighting Program data to help inform most common occurrences for T12 -> HPT8 change-out combinations

10. ETO Lighting Program Unit Counts • Assumption is that most common BF combinations result in a desirable light output compared to the baseline • Ok to use non-res data to inform this aspect of res. lighting?

11. Remaining Issues for RTF Discussion • Periodic replacement costs and EUL • Baseline T12 lamp life: • 17.1 years kitchens (based on 2.4 Hours/day) • 22.8 years garages (based on 1.8 Hours/day) • HPT8 lamp life: • 27.4 years kitchens (based on 2.4 Hours/day) • 36.5 years garages (based on 1.8 Hours/day) • Normally we count for benefits of reduced change-outs of T12 lamps over EUL of measure (1.6 in this case) • In this case, assume all T12s are gone within the next 17.1 years • Effectively makes the EUL of the measure equal to 17.1 years

12. Staff Proposal on highlighted areas • Do not use a 4% removal rate for linear fluorescent fixtures given complexity to install HPT8 relative to a CFL screw-in • Use 50/50 split of baseline ballast types • Program delivery verification over time could help inform a better estimate • Use average 8’ 2-lamp wattage found in RBSA for all lamp configurations • Use non-res data to inform common BF combinations • ETO lighting program represents best source for this • Do not include periodic replacement costs and set the EUL equal the 17.1 years • Assumes all T12 lamps are gone after 17 years • Go to Workbook for charts

13. Decision • “I _______ move to approve the 4-foot T12 to High Performance T8 change-out UES measure as proposed and: • move the measure to a Proven Category; and • set the measure status to “Active”; and • set the sunset date to September, 2016.”

14. Decision • “I _______ move to approve the 8-foot T12 to High Performance T8 change-out UES measure as proposed and: • move the measure to a Small Saver Category; and • set the measure status to “Active”; and • set the sunset date to September, 2016.”