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DHP Costs & NEBs

DHP Costs & NEBs. Ecotope, Inc. August 20, 2013. Agenda . Overview DHP Cost AC Credit Supplemental Fuel Benefit Summary Q&A. Overview. May RTF, presented DHP UES key issues July RTF, presented SEEM calibration and preliminary savings estimates

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DHP Costs & NEBs

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  1. DHP Costs & NEBs Ecotope, Inc. August 20, 2013

  2. Agenda Overview DHP Cost AC Credit Supplemental Fuel Benefit Summary Q&A

  3. Overview • May RTF, presented DHP UES key issues • July RTF, presented SEEM calibration and preliminary savings estimates • August RTF, presenting cost/NEB analysis based on directives from May RTF • Quantify/monetize DHP cost, AC credit, supplemental fuel benefit • Do not quantify/monetize comfort or other takeback effects • Seeking general acceptance of cost/NEB inputs for UES workbook • September RTF, present UES workbook based on prior RTF feedback on calibration, savings inputs, and cost/NEB inputs

  4. Cost/NEB Assumptions • Costs and NEBs are calculated by climate zone • Calculations do not include: • Operation & maintenance costs • Air pollution or emission impacts • Any change in supplemental fuel over measure life time

  5. DHP Cost • Data source = NEEA DHP Program cost tracking (All_Approved_Install_Data-03_04_13.csv) • Cost average based on • “Total Cost,” minus tax • Weighted average of three climate zones • Total program dataset, n=18,091 • Screened in sequence: • Pre 3/31/12 sites, BPA changed reporting requirements (n=15,425) • Not multifamily (n=14,867) • 1 indoor head, 1 compressor (n=9,624) • >3/4t,<2t compressor capacity (n=9,055) • ≥$1,200, ≤$10,000 (n=9,046) • Total screened dataset, n=9,046

  6. DHP Cost Distribution Median = $3,852 Mean = $3,874 Wtd mean = $3,859

  7. Average DHP Cost by Climate Zone

  8. Puget Cluster Higher, No Big Impact on Average Cost

  9. AC Credit • AC equipment estimate = $447 • Source: Amazon, Target, Home Depot, Sears • Various capacities and makes, 10,000 up to 20,000 Btu/hr capacity (26 units) AC equipment credit by climate zone (credit for homes that do not already have AC): *Source: RBSA

  10. Annual Supplemental Fuel Benefit Options Option 1: Benefit based on fuel cost = $0.082/kWh • Wood benefit = $0.068/kWh assuming $200/cord; 20 MMBtu/cord; 50% delivery efficiency • Propane benefit= $0.146/kWh assuming $2.84/gal (EIA); 92,000 Btu/gal; 72% delivery efficiency for high efficiency, freestanding stove or fireplace insert • Wood/propane ratio taken from RBSA, 17% of supplemental fuels is propane and 83% is wood (calcs. in table are weighted averages of both fuel types) Option 2: Based on retail kWh rate = $0.089/kWh • Avg. of WA, OR, & ID (April 2013) (http://www.eia.gov/electricity/monthly/epm_table_grapher.cfm?t=epmt_5_6_a)

  11. Annual Supplemental Fuel Benefit Options, Cont. *HZ supplemental fuel saturations derived from RBSA **HZ supplemental fuel use derived from DHP billing analysis. Supplemental savings equals delta between total pre-space heat average with and with supplemental fuel.

  12. Summary of Costs & NEBs Split capital cost by climate zone or use regional average? Use electricity cost equivalent to estimate supplemental heat benefit?

  13. Questions & Answers

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