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Oregon Energy Star Homes Measure Update

Oregon Energy Star Homes Measure Update. New Measure Proposal April 22nd , 2014. Measure Name: Energy Star Homes BOP1(Ducts Inside, Equipment Upgrade, Envelope), BOP2 Measure Type: UES Measure Category: Proven Measure Sector: Residential Sunset Date: April, 2014

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Oregon Energy Star Homes Measure Update

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  1. Oregon Energy Star Homes Measure Update New Measure Proposal April 22nd, 2014

  2. Measure Name: Energy Star Homes BOP1(Ducts Inside, Equipment Upgrade, Envelope), BOP2 Measure Type: UES Measure Category: Proven Measure Sector: Residential Sunset Date: April, 2014 Reason for Update: Update to SEEM94, Calibration, ProCost Template Measure background

  3. None. Staff Highlighted Areas

  4. Measure Summary

  5. Simulations conducted in SEEM 94 • RTF approved new construction calibration applied • Expanded list of prototypes from 3 to 5 • As per NEEA 2007 New Homes Characterization study, 16 % of homes are built slab on grade. Measure Update Summary

  6. Assumption: EISA reduces wattage of baseline incandescent bulbs by an average of 28 %. • 60 W bulb  43 W • All other calculation details kept constant. • As per latest RTF staff analysis, CFLs have no incremental cost. Impact of EISA Lighting Standards

  7. Linked saving for tank upgrade and low flow appliance to respective workbooks. Slight increase in savings (approx. 400  500 kWh) Cost remains relatively constant ($ 100) DHW Update

  8. Manufacturer suggested flow rate is 400 cfm/ ton (previous assumption) • A 73 % adjustment factor applied to suggested flow rate. • NEEA New Homes Characterization study (2007) conducted by RLW. • Makes a difference of approximately 100 kWh on an average. Furnace Fan CFM/ Ton

  9. EUL for new homes is 45 years. Individual measures have EUL < 45 years. The savings and cost for these measures recur after their EUL. This lowers TRC. Incremental Cost Accounting

  10. BOP 1 Equipment Path Energy Savings

  11. BOP 1 Equipment Path Incremental Cost

  12. BOP 1 Equipment Path TRC

  13. BOP 1 Ducts Inside Path Energy Savings

  14. BOP 1 Ducts Inside Path Incremental Cost

  15. BOP 1 Ducts Inside Path TRC

  16. BOP 1 Envelope Path Energy Savings

  17. BOP 1 Envelope Path Incremental Cost

  18. BOP 1 Envelope Path TRC

  19. BOP 2 Energy Savings

  20. BOP 2 Incremental Cost

  21. BOP 2 TRC

  22. Conversations with NW Energy Star, Oregon Building Codes Division indicate that no upcoming code change for at least two years. • Federal std for water heaters will necessitate a change in the DHW component (SOURCE) • Proposed sunset date: 1 year from now. • Staff will update the DHW component. Sunset Date

  23. “I __________ move that the RTF: • Approve the three BOP1 (Equipment, Ducts Inside, and Envelope) and BOP2 (Zonal) Energy Star Home Option UES values for all Oregon climate zones, • and set the sunset date to April 30, 2015. Proposed Decision

  24. Washington Energy Star Homes Measure Update New Measure Proposal April 22nd, 2014

  25. WA 2012 residential code became active on July 2013. • WA 2012 energy code has a set of core criteria that a builder must meet and attain 1.5 points from a set of optional criteria. • WA 2012 code aims to transform the market by encouraging: • Heat Pumps to be the primary electric heating system • HVAC systems to be located inside the thermal envelope Washington 2012 New Construction Code Now Active

  26. Analysis done by Ecotope (RTF Meeting, December 2013) used as basis for prototype selection. • Baseline prototype selected based on three criterion: • Mean Energy Consumption. • Low Incremental Cost. • Anecdotal evidence from the field. • WA Department of Commerce, CleaResult, Ecotope Consulting were consulted in this process. WA 2012 Baseline Prototypes

  27. WA 2012 Baseline Prototypes (Contd.)

  28. Current Energy Star specifications were drafted for the WA 2009 code. • WA 2012 residential code in most cases meets, and in some cases exceeds current Energy Star code. • Potential for savings via Energy Star as it stands are minimal. • NW Energy Star team intends to update the current Energy Star specifications within the next month. • Energy Star team will develop reference design homes that would consume at least 12 % less energy than code homes. Status of Current Energy Star Specifications

  29. Deactivate current WA Energy Star Measures. • Staff checked with WA State Dept. of Commerce (Chuck Murray), builders cannot build to 2009 code anymore. • Staff will characterize the WA Energy Star Measures once specifications are finalized. Staff Proposal

  30. “I __________ move that the RTF: Deactivate all current WA Energy Star New Construction UES measures. Proposed Decision

  31. Effect of Calibration on Savings Backup Slides

  32. BOP 1 – Ducts Inside Path

  33. BOP2 - Zonal

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