Cost-Effectiveness of Home Energy Retrofits in Pre-Code Vintage Homes in the United States

Stacey Rothgeb, Stacey Rothgeb (NREL Technical Monitor)

Research output: NRELSubcontract Report


This analytical study examines the opportunities for cost-effective energy efficiency and renewable energy retrofits in residential archetypes constructed prior to 1980 (Pre-Code) in fourteen U.S. cities. These fourteen cities are representative of each of the International Energy Conservation Code (IECC) climate zones in the contiguous U.S. The analysis is conducted using an in-house version ofEnergyGauge USA v.2.8.05 named CostOpt that has been programmed to perform iterative, incremental economic optimization on a large list of residential energy efficiency and renewable energy retrofit measures. The principle objectives of the study are as follows: to determine the opportunities for cost effective source energy reductions in this large cohort of existing residential building stockas a function of local climate and energy costs; and to examine how retrofit financing alternatives impact the source energy reductions that are cost effectively achievable.
Original languageAmerican English
Number of pages110
StatePublished - 2012

Bibliographical note

Work performed by BA-PIRC, Cocoa, Florida

NREL Publication Number

  • NREL/SR-5500-56388

Other Report Number

  • DOE/GO-102012-3786


  • Building America
  • Building America Partnership for improved residential construction (ba-pirc)
  • building energy simulation
  • cost optimization
  • EE
  • energy efficiency
  • energy retrofits
  • renewable energy (RE)
  • residential
  • residential buildings


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