It is important to present the potential of renewable energy generation in a simple and clear way for everyone.

Get an idea of the potential of photovoltaic power generation at your site.

languages: english german


What makes this app stand out from others
☆ Typical meteorological year (TMY) as radiation data at your site

☆ Hourly resolution allows an accurate view of production and battery storage throughout the day

☆ Individual load profiles allow a design adapted to your consumer behavior

☆ Roof area measurement and panel positioning allow realistic planning


PV Calculator Features

• Calculate the amount of electricity fed into the grid and purchased
• Calculate your annual savings and payback time
• Site specific solar irradiance
• Hourly resolution
• Define your PV-Modules and power inverter
• Automatic determination of optimal orientation
• Define your energy demand and daily load profile
• Sizing of your battery storage
• Roof area measurement and panel positioning

This app is Ad-free.


Premium Version
- Historical radiation data from 2005-2023
- Create additional projects and use the import/ export function
- Consider Snowfall
- Consider shading
- Create your own individual load profile
- Create an unlimited number of PV arrays
- Export your results as pdf-Summary or Excel sheet