Northwest Energy Star Homes Lighting Savings

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Northwest Energy Star Homes Lighting Savings
November 13, 2006
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Issue

• Current assumptions for CFL removal and
  takeback based on professional judgment circa
  1994
• Recent program evaluation results do not support
  current assumptions

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New England Data Supporting Change

• New Energy Star home buyers (Massachusetts)
• Removal rate for CFLs
• 1 (2003)
• 2 (2004)
• Removal rate for hardwired CFL Fixtures
• 4 (2003)
• 2 (2004)

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Northwest Data Supporting Change
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Current Assumptions
Proposed Revised Assumptions
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Recommendation

• RTF Recommends that commencing January 2006 or as
  soon as practicable thereafter, PNW residential
  weatherization and new construction programs
  adopt minimum efficiency standards for windows of
  class 30 (U-factor 30)
• ResWx specs now require class 30
• May be satisfied by achieving a area weighted
  average of class 30 (U-factor 30) or better