Method for Determining Optimal Residential Energy Efficiency Retrofit Packages

Benjamin Polly, Mike Gestwick, Marcus Bianchi, Ren Anderson, Scott Horowitz, Craig Christenson, Ron Judkoff

Research output: NRELTechnical Report


Businesses, government agencies, consumers, policy makers, and utilities currently have limited access to occupant-, building-, and location-specific recommendations for optimal energy retrofit packages, as defined by estimated costs and energy savings. This report describes an analysis method for determining optimal residential energy efficiency retrofit packages and, as an illustrative example,applies the analysis method to a 1960s-era home in eight U.S. cities covering a range of International Energy Conservation Code (IECC) climate regions. The method uses an optimization scheme that considers average energy use (determined from building energy simulations) and equivalent annual cost to recommend optimal retrofit packages specific to the building, occupants, and location. Energysavings and incremental costs are calculated relative to a minimum upgrade reference scenario, which accounts for efficiency upgrades that would occur in the absence of a retrofit because of equipment wear-out and replacement with current minimum standards.
Original languageAmerican English
Number of pages79
StatePublished - 2011

NREL Publication Number

  • NREL/TP-5500-50572

Other Report Number

  • DOE/GO-102011-3261


  • analysis
  • EE
  • energy efficiency
  • optimization
  • packages
  • retrofit


Dive into the research topics of 'Method for Determining Optimal Residential Energy Efficiency Retrofit Packages'. Together they form a unique fingerprint.

Cite this