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Between December of 2009 and December of 2012, participants in a deep energy retrofit (DER) pilot program sponsored by National Grid and conducted in Massachusetts and Rhode Island completed 42 DER projects. Building Science Corporation (BSC) provided technical support to program participants and verification of measures for the program sponsor, National Grid. The pilot program required aggressive upgrades to building enclosure systems, implementation of ventilation and combustion safety measures and also provided incentives to upgrade mechanical systems. Thirty-seven of the projects completed through the pilot were comprehensive retrofits while five were partial DERs, meaning that high performance retrofit was implemented for a single major enclosure component or a limited number of major enclosure components. The collection of 42 DER projects represents 60 units of housing.
Download the Building America Case Study: Whole-House Solutions for
Existing Homes National Grid Deep Energy Retrofit Pilot—
Massachusetts and Rhode Island .pdf
Building America Case Study: Whole House Solutions for Existing Homes—National Grid Deep Energy Retrofit Pilot: Massachusetts and Rhode Island
BA-1315: Evaluation of Early Performance Results for Massachusetts Homes in the National Grid Pilot Deep Energy Retrofit Program