NREL's PVWatts Calculator is a web-based application that estimates the energy production and cost of energy of grid-connected solar energy systems throughout the world. It allows homeowners, small building owners, installers and manufacturers to easily develop estimates of the performance of potential solar installations. Watch this overview to see how it works then learn more and start using PVWatts at https://bit.ly/2EDH59M | National Laboratory of the Rockies