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Title: Building America Case Study: Whole-House Solutions for Existing Homes: Greenbelt Homes, Inc. Pilot Retrofit Program; Whole-House Solutions for Existing Homes, Energy Efficiency & Renewable Energy (EERE)

In the fall of 2010, a multiyear pilot energy efficiency retrofit project was undertaken by Greenbelt Homes, Inc, (GHI) a 1,566 home cooperative of circa 1930 and 1940 homes in Greenbelt, Maryland. GHI established this pilot project to serve as a basis for decision making for the rollout of a decade-long community-wide upgrade program that will incorporate energy efficiency improvements to the building envelope and mechanical equipment. With the community upgrade fully funded by the cooperative through their membership without outside subsidies, this project presents a unique opportunity to evaluate and prioritize the wide-range of benefits of high-performance retrofits based on member experience with and acceptance of the retrofit measures implemented during the pilot project. Addressing the complex interactions between benefits, trade-offs, construction methods, project management implications, realistic upfront costs, financing, and other considerations, serves as a case study for energy retrofit projects to include high-performance technologies based on the long-term value to the homeowner. The pilot project focused on identifying the added costs and energy savings benefits of improvements. Phase 1: baseline evaluation for a representative set of 28 homes sited in seven buildings; Phase 2: installation of the building envelope improvements and continued monitoring of the energy consumptionmore » for the heating season and energy simulations supporting recommendations for HVAC and water heating upgrades to be implemented in Phase 3.« less
Publication Date:
OSTI Identifier:
Report Number(s):
NREL/FS-5500-63628; DOE/GO-102015-4619
Resource Relation:
Related Information: Work performed by Partnership for Home Innovation (PHI), Upper Marlboro, Maryland
Research Org:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Building Technologies Office (EE-5B)
Contributing Orgs:
Partnership for Home Innovation (PHI)
Country of Publication:
United States
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; Residential; Residential Buildings; PHI; Building America; Retrofit; Walls; Crawlspace; Attic; Exterior insulation; Community; Energy upgrades; Energy savings; Energy monitoring