PVWatts Calculator

pvwatts.nrel.gov

Estimates energy production and cost of grid-connected PV systems worldwide

Visit
PVWatts Calculator screenshot
/ About /

PVWatts is a free online calculator developed by the National Renewable Energy Laboratory (NREL) that estimates the energy production and cost of energy for grid-connected photovoltaic systems anywhere in the world. It uses 30 years of historical weather data to provide performance predictions for potential solar installations. The tool is designed for homeowners, small building owners, installers, and manufacturers to quickly assess the viability of PV systems.

/ How it works /

Users input location and system parameters, and PVWatts uses 30 years of historical weather data to calculate estimated annual energy output and cost of energy for the proposed PV system.

/ Who it's for /

homeowners, small building owners, solar installers, and PV manufacturers

/ More info /

Background.

Status
launched
Business model
free
Company
National Renewable Energy Laboratory (NREL)
/ Discovered patterns /

Similar projects.

Coming soonSpektrail’s read on Climate & Energy

Editorial take on the space this project sits in — momentum signals, adjacent moves, our call on whether the wedge is real. Get pinged when we publish a new read or when the landscape shifts.

Coming soon

Have a take on this space?

Tell us what you’d build differently, where you think the incumbents miss, or what we’ve gotten wrong about this project. Comments + reactions are coming soon.