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Title: Bay Ridge Gardens - Mixed Humid Affordable Multifamily Housing Deep Energy Retrofit

Under this project, Newport Partners (as part of the BA-PIRC research team) evaluated the installation, measured performance, and cost effectiveness of efficiency upgrade measures for a tenant-in-place deep energy retrofit (DER) at the Bay Ridge multifamily development in Annapolis, Maryland. This report summarizes system commissioning, short-term test results, utility bill data analysis, and analysis of real-time data collected over a one-year period after the retrofit was complete. The Bay Ridge project is comprised of a "base scope" retrofit which was estimated to achieve a 30%+ savings (relative to pre-retrofit) on 186 apartments, and a "DER scope" which was estimated to achieve 50% savings (relative to pre-retrofit) on a 12-unit building. A wide range of efficiency measures was applied to pursue this savings target for the DER building, including improvements/replacements of mechanical equipment and distribution systems, appliances, lighting and lighting controls, the building envelope, hot water conservation measures, and resident education. The results of this research build upon the current body of knowledge of multifamily retrofits. Towards this end, the research team has collected and generated data on the selection of measures, their estimated performance, their measured performance, and risk factors and their impact on potential measures.
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  1. Building America Partnership for Improved Residential Construction (BA-PIRC), Cocoa, FL (United States)
Publication Date:
OSTI Identifier:
Report Number(s):
DOE Contract Number:
AC36-08GO28308; KNDJ-0-40339-03
Resource Type:
Technical Report
Research Org:
Building America Partnership for Improved Residential Construction (BA-PIRC), Cocoa, FL (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Building Technologies Office (EE-5B) (Building America)
Country of Publication:
United States
deep energy retrofit; risk factor; hybrid heat pump; savings to investment ratio; residential; residential building; BA-PIRC; Building America