U.S. Department of Energy Energy Efficiency and Renewable Energy

Geographic Variation in Potential of Rooftop Residential Photovoltaic Electric Power Production in the United States

This paper describes a geographic evaluation of Zero Energy Home (ZEH) potential, specifically an assessment of residential roof-top solar electric photovoltaic (PV) performance around the United States and how energy produced would match up with very-efficient and super-efficient home designs. We performed annual simulations for 236 TMY2 data locations throughout the United States on two highly-efficient one-story 3-bedroom homes with a generic grid-tied solar electric 2kW PV system. These annual simulations show how potential annual solar electric power generation (kWh) and potential energy savings from PV power vary geographically around the U.S. giving the user in a specific region an indication of their expected PV system performance.

August, 2004
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Matthew Lombardi, Danny Parker, Robin Vieira, and Philip Fairey (Florida Solar Energy Center)
k-fsec-pf-380-04.pdf362 KB