Building America Case Study: Low-Cost Evaluation of Energy Savings at the Community Scale, Fresno, California (Fact Sheet)

Stacey Rothgeb, A. Burdick, A. Poerschke, A. Rapport, M. Wayne

Research output: NRELFact Sheet


A new construction pilot community was constructed by builder-partner Wathen-Castanos Hybrid Homes (WCHH) based on a single occupied test house that was designed to achieve greater than 30% energy savings with respect to the House Simulation Protocols (Hendron, Robert; Engebrecht, Cheryn (2010). Building America House Simulation Protocols. Golden, CO: National Renewable Energy Laboratory.).Builders face several key problems when implementing a whole-house systems integrated measures package (SIMP) from a single test house into multiple houses. Although a technical solution already may have been evaluated and validated in an individual test house, the potential exists for constructability failures at the community scale. This report addresses factors of implementation andscalability at the community scale and proposes methodologies by which community-scale energy evaluations can be performed based on results at the occupied test house level. Research focused on the builder and trade implementation of a SIMP and the actual utility usage in the houses at the community scale of production. Five occupants participated in this community-scale research by providingutility bills and information on occupancy and miscellaneous gas and electric appliance use for their houses. IBACOS used these utility data and background information to analyze the actual energy performance of the houses. Verification with measured data is an important component in predictive energy modeling. The actual utility bill readings were compared to projected energy consumption usingBEopt with actual weather and thermostat set points for normalization.
Original languageAmerican English
Number of pages2
StatePublished - 2014

Bibliographical note

Work performed by IBACOS, Pittsburgh, Pennsylvania

NREL Publication Number

  • NREL/FS-5500-62120

Other Report Number

  • DOE/GO-102014-4434


  • Building America
  • community scale
  • house simulation protocol (HSP)
  • implementation and scalability
  • new construction pilot community
  • predictive energy modeling
  • residential
  • residential buildings
  • single-family detached home
  • systems integrated measures package (SIMP)
  • test methods
  • utility bills


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