1. T12 to HPT8 Change-outs Small/Rural request for development May 15, 2012

2. Purpose Present savings methodology Cite sources used in development Staff recommendations on next steps 2

3. Measure Summary Sheet 3 Measure Identifiers IdentifierPossible ValuesFurther Explanation and Sources Measure Type (See UES Table below) 1. Replacement of 1-lamp, 4-foot T12 with 1-lamp HPT8 2. Replacement of 2-lamp, 4-foot T12 with 2-lamp HPT8 3. Replacement of 3-lamp, 4-foot T12 with 3-lamp HPT8 4. Replacement of 4-lamp, 4-foot T12 with 4-lamp HPT8 5. Replacement of 1-lamp, 4-foot T12 with 1-lamp HPT8 6. Replacement of 2-lamp, 4-foot T12 with 2-lamp HPT8 7. Replacement of 3-lamp, 4-foot T12 with 3-lamp HPT8 8. Replacement of 4-lamp, 4-foot T12 with 4-lamp HPT8 Constant Parameters ParameterPossible ValuesFurther Explanation and Sources Space Conditioning Interaction % kWh: 15% therms: 0.033 therms/kWh (Only applied to interior Room Types) This value is applied to the gross savings (Gross Savings x (1-0.15)) to reflect the net positive effects from heat gain associated with conditioned space lighting. The value depends on % Space Heat Interaction, an Electric Heating Market Share %, HVAC- type weights, and HVAC-type heating efficiencies that are developed in external RTF workbooks. [PNWResSectorSupplyCurveUnits_6thPlan.xls - 'Summary of Residential Units' tab] Lamp Usage/Hours of Use (HOU) [Hours/day] 2.5 Hours of use by lamp type: "Final Evaluation Report: Upstream Lighting Program.” KEMA, Inc. CPUC (February 8, 2010) and "Lighting Market Characterization Study" US Department of Energy EUL25 yearsHPT8 EULs based on 25,000 rated hour lifetime, hours of use by lamp location CostsVaries by fixture type and # of lamps Direct Install costs (baseline and measure) from ETO Lighting program and internet research

4. Measure Summary Sheet 4 Unit Energy Savings (UES) Estimation Method, Parameters and Sources Measure TypeUES ComponentAnalysis approach Primary Parameter / Adjustment Factor Baseline DescriptionEfficient Case DescriptionBaseline SourceEfficient Case Source Conversion of T12 lighting to HPT8 One Component Savings is determined by calculating the difference between the annual kWh consumptions of a fixture with T12 lamps and a fixture with High Performance T8 lamps. Assumed wattage and daily hours-of-use (HOU) of the fixtures depend on room type. Lamp wattage per fixture type Varies by fixture type: 1-lamp, 4-foot T12: 48W 2-lamp, 4-foot T12: 82W 3-lamp, 4-foot T12:130W 4-lamp, 4-foot T12:164W 1-lamp, 8-foot T12: 83W 2-lamp, 8-foot T12: 138W 3-lamp, 8-foot T12: 221W 4-lamp, 8-foot T12: 276W Varies by fixture type: 1-lamp, 4-foot HPT8: 27W 2-lamp, 4-foot HPT8: 50W 3-lamp, 4-foot HPT8: 76W 4-lamp, 4-foot HPT8: 101W 1-lamp, 4-foot HPT8: 27W 2-lamp, 4-foot HPT8: 63W 3-lamp, 4-foot HPT8: 72W 4-lamp, 4-foot HPT8: 104W Wattages for baseline case (T12) and efficient case (HPT8) taken from ETO lighting tool which were developed by lighting industry professionals utilizing common combinations of fixtures, lamps, and ballast factors found in the market.

5. Measure Cost Summary Category - SubcategoryElement Element use Value Source informationAnalysis description Included in analysis? Reason for inclusion/ exclusion Inclusion in other element EstimateEstimate of uncertaintySource informationAnalysis description Was this element included in the analysis? [dropdown] Indicate the reason for inclusion or exclusion. [dropdown] For elements captured by other elements, indicate where values considered Value, including units. Positive values imply costs, negative values imply benefits Provide an estimate of uncertainty. For example, the standard error. Brief description of data source(s) and justification. (E.g., general description, name, vintage, region/market of applicability, and number of data points. Why were selected data sources used?) Brief description of analysis methodology and justification. (E.g., average, weighted average, regression analysis. Why was this methodology chosen?) Capital Costs - Capital Costs materialYesConsidered 4' 1-lamp - $49 4' 2-lamp - $59 4' 3-lamp - $66 4' 4-lamp - $74 8' 1-lamp - $49 8' 2-lamp - $85 8' 3-lamp - $69 8' 4-lamp - $148 Confident. Sample size for average cost is based on several hundred sites Average of data from ETO commercial T12 lighting program from 2006-2009. Only commercial sites and 1-for-1 changeouts were considered. Weighted average based on count of 1-for- 1 lamp installs. ancillary material (wiring, condensate flue, etc) No Negligible incremental impact disposalYes Captured in another element material laborYes Captured in another element material design and engineeringNoNot considered permitting/ licensingNoNot considered mark-upsYes Captured in another element material delivery (e.g. shipping costs)NoNot considered Maintenance - Maintenance ongoing maintenance, laborNo Negligible incremental impact ongoing maintenance, materialsYesConsidered ongoing maintenance, disposalNoNot considered

6. Baseline and Efficient Case wattages Baseline wattage of T12 fixtures from ETO lighting calculator HPT8 wattages of HPT8 fixtures from ETO lighting calculator – Weight BF combination by frequency of occurrence in ETO program HIGH PERFORMANCE T8'sWatts 2', 2 lamp T8 (high performance, BF<0.85)32 2', 2 lamp T8 (high performance, 0.85<BF≤1.0)32 3', 2 lamp T8 (high performance, BF<0.85)46 3', 2 lamp T8 (high performance, 0.85<BF≤1.0)46 4', 1 lamp T8 (high performance, BF<0.85)25 4', 1 lamp T8 (high performance, 0.85<BF≤1.0)29 4', 2 lamp T8 (high performance, BF≤0.85)48 4', 2 lamp T8 (high performance, 0.85<BF≤1.0)55 4', 2 lamp T8 (high performance, BF≥1.01)74 4', 3 lamp T8 (high performance, BF≤0.85)72 4', 3 lamp T8 (high performance, 0.85<BF≤1.0)81 4', 3 lamp T8 (high performance, BF≥1.01)111 4', 4 lamp T8 (high performance, BF≤0.85)95 4', 4 lamp T8 (high performance, 0.85<BF≤1.0)108 4', 4 lamp T8 (high performance, BF≥1.01)148 4', 6 lamp T8 (high performance, 0.85<BF≤1.0)162 4', 6 lamp T8 (high performance, BF≥1.01)222 T-12 FIXTURESWatts 2', 1 lamp T12 U Bent48 2', 1 lamp T1248 2', 2 lamp T12 U Bent82 2', 2 lamp T1282 3', 1 lamp T1236 3', 2 lamp T1272 4', 1 lamp T1248 4', 2 lamp T1282 4', 3 lamp T12130 4', 4 lamp T12164 8', 1 lamp T1283 8', 2 lamp T12138 8', 3 lamp T12221 8', 4 lamp T12276

7. Savings methodology Baseline and target wattages from lighting calculator tool Hours of use from KEMA and DOE studies applicable to kitchens – 2009 KEMA study – 2.5 Hrs/day for Single Family Kitchens – 2010 DOE study – 2.3 Hrs/day for Single Family Kitchens De-rating for space heat interaction from 6 th Power Plan (15%) Multiply fixture delta watts by kitchen hours of use and de-rate to get savings kWh savings = [W (base) – W (target) ]/1000 X HOU X 365 X (1-Space Interaction factor) 7

8. If Small Saver, also need… Estimate of regional potential – Distribution of linear fluorescent lamps in residential kitchens – Number of kitchens in region – Distribution of baseline fixture types in kitchen e.g. 4’ T12 1-lamp vs. 4’ T12 4-lamp Measure Summary TableRegional Potential Table Existing Equipment T12 Watts HPT8 Watts Delta Watts Hours of use kWh savings per year Kitchen install applicability Weighted Average savings (kWh) Regional applicability Total Regional potential (MWa) 4', 1 lamp T12 48 27 21 2.5 165% 391.5% 5.1 4', 2 lamp T12 82 50 32 2.5 2450% 4', 3 lamp T12 130 76 54 2.5 425% 4', 4 lamp T12 164 101 63 2.5 4910% 8', 1 lamp T12 83 27 56 2.5 432% 8', 2 lamp T12 138 63 75 2.5 5825% 8', 3 lamp T12 221 72 149 2.5 1152% 8', 4 lamp T12 276 104 172 2.5 1331%

9. Next Steps for S/R subcommittee Should this continue as down the small saver path? – Sufficient data appears to exist to estimate savings for 1-for- 1 lamp change-outs Two large end-use studies exist to predict number of hours per day, which is primary variable – DOE study information can likely estimate regional potential Are certain change-out combinations preferred? Comparison of regional lighting calculator baseline and target case wattages Anything else missing? 9