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Title: Building America Case Study: Indirect Solar Water Heating Systems in Single-Family Homes, Greenfield, Massachusetts

Solar water heating systems are not new, but they have not become prevalent in most of the U.S. Most of the country is cold enough that indirect solar thermal systems are required for freeze protection, and average installed cost of these systems is $9,000 to $10,000 for typical systems on single-family homes. These costs can vary significantly in different markets and with different contractors, and federal and regional incentives can reduce these up-front costs by 50% or more. In western Massachusetts, an affordable housing developer built a community of 20 homes with a goal of approaching zero net energy consumption. In addition to excellent thermal envelopes and PV systems, the developer installed a solar domestic water heating system (SDHW) on each home. The Consortium for Advanced Residential Buildings (CARB), a research consortium funded by the U.S. Department of Energy Building America program, commissioned some of the systems, and CARB was able to monitor detailed performance of one system for 28 months.
Publication Date:
OSTI Identifier:
Report Number(s):
NREL/FS-5500-65188; DOE/GO-102016-4790
DOE Contract Number:
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)
Country of Publication:
United States
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; CARB; Consortium for Advanced Residential Buildings; SWA; Steven Winter Associates; Building America; residential; residential buildings; solar thermal; indirect; freeze-protected; Zero Energy Ready Homes; zero energy homes; SDWH; domestic water heating; commissioning; water heating solutions; Wisdom Way Solar Village; Rural Development Inc.; tankless water heater; solar fraction