NATIONAL RENEWABLE ENERGY LABORATORY (US)
NREL’s PVWatts® Calculator
The calculator estimates the energy production and energy cost of grid-connected photovoltaic (PV) energy systems worldwide. It allows homeowners, small building owners, installers, and manufacturers to easily develop estimations of the performance of potential PV installations.
| Applicability: | Energy communities / collective actions in general |
| Type of tool: | Calculator |
| Regional applicability: | No regional restriction (in English) |
| Complexity: | Amateur and expert level (advanced settings) – comprehensive report for experts |
| Project phase: | The tool can be used for the planning phase. |
| Necessary data for use: | The tool does not need any data input and can be used directly. |
The tool is available free of charge and without a prior registration.