An analysis was performed to determine the cost-effectiveness of photovoltaic (PV) system Power Purchase Agreements for prototype homes in 13 United States climate locations. EnergyGauge® USA v.5.1 software was used to simulate the energy use of one-story, three-bedroom, 2000 ft2 , single-family, frame prototype homes in thirteen representative U.S. climates comprising six IECC climate zones. The same software was used to simulate the power production of PV systems designed to provide approximately 75% of the annual electric energy required by the prototype homes. The net present value (NPV) of the photovoltaic PPA was then calculated as the difference in the 20-year, present-value, life-cycle-cost for the PPA and the 20-year, present-value, life-cycle-cost for purchasing all required power from the local utility
Florida Solar Energy Center and Fairey, Philip, "Lennar Ventures Power Purchase Agreement Analysis" (2016). FSEC Energy Research Center®. 106.