A time-motion study by NREL discovered that retrofitting installations of roof-integrated photovoltaics takes 7% less labor time than standard solar installations. For new construction, the installation time drops by 44%.
The U.S. Department of Energy’s National Renewable Energy Laboratory (NREL) conducted a time-motion study on solar contractors installing roofing integrated photovoltaics (RIPV) on residential solar projects at several California sites. The researchers published their findings in a publication titled “Observations and Lessons Learned From Installing Residential Roofing Integrated Photovoltaics.”
The study primarily highlighted that new construction RIPV installs very quickly. However, the time required for retrofit RIPV is still comparable to that of standard solar installations. The installation times are still higher for retrofit RIPV, at least in part, due to the application of new techniques and the continued evolution of supply chains.
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Source: PV Magazine
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