PVWatts Calculator
NREL''s PVWatts ® Calculator Estimates the energy production of grid-connected photovoltaic (PV) energy systems throughout the world. It allows homeowners, small building owners,
PVWatts Version 5 Manual
R calculator is a web application developed by the National Re-newable Energy Laboratory (NREL) that estimates the electricity production of a grid-connected photovoltaic system based
PVWatts Calculator
SOLAR RESOURCE DATA Please enter a different location. Sometimes a more specific location works better, but other times a more general location is best. »
Solar Panel Calculator
Use our solar panel calculator to find your solar power needs and what panel size would meet them.
PVWatts Calculator
Welcome to the new PVWatts ® This is Version 6 of NREL''s popular online photovoltaic system calculator.
PVWatts Calculator
Welcome to PVWatts ® This is Version 6.3.1 of NREL''s popular online photovoltaic calculator. We updated PVWatts ® on April 22, 2022 to add new solar resource data for