Photovoltaic systems represent the future, this app brings together simple and quick calculations to make the most of solar energy.

Main:
Efficiency of solar panels, Air mass coefficient, Fill factor, Sun position, Optimal tilt angle, Solar radiation on a tilted surface, Solar cell temperature, Effect of temperature on the photovoltaic module, Compass, Tilt, Size of the solar cable (DC), Protection device sizing, String sizing, Short-circuit current of strings, Choice of inverter, Decay of photovoltaic panels over the years, Occupied surface, Hours of daylight during the year.

Resources:
Series solar panels connection, Parallel solar panels connection, Module - string - array, Solar zenith, Solar azimuth, Solar declination.

The app also contains a very useful form.

// Option A //

To download Photovoltaic Calculations mod from HappyMod.com.
You need enable the option "Unknown Sources".
1. Click on the above link to download Photovoltaic Calculations mod APK.
2. Save the file in your device Downloads folder.
3. Now tap on Install and wait for the installation to finish.
4. Once it is done, open the game and start playing it right away.

// Option B //

To download Photovoltaic Calculations from HappyMod APP, you can follow this:
1. Open your browser and download the HappyMod APK file from HappyMod.com - the only official website of HappyMod.
2. Open Android Settings and go into Privacy or Security.
3. Tap the option to Allow Unknown Sources and enable it.
4. Go to your Android downloads and tap the APK file.
5. Follow the directions on the screen to install it.
6. Search Photovoltaic Calculations in HappyMod App.