Hi Hestia and thank you, The problem seems to be more present during cloudy days. I made some new checks in sunny days and the difference between script and weather stations was less obvious. My cloudiness measures are pretty sharp, I use a MLX90614 to measure sky temperature and calculate ...

Thank you Azzonveld,

Suncalc seems to calculate Sun position. Solar Data Script works fine for that. It's juste Solar radiations (and may be lux) that seems to give weird results.

Hi, This script turns for many years on my raspberry, but I realized that its gives me false radiation values if I compare them to solar radiations from windy (https://www.windy.com/fr/-Afficher-ajouter-d%E2%80%99autres-couches/overlays?solarpower) or other sources (city airport information). At ...

Hello, I have a problem using the script. It runs well, but gave me completely false results for the last 2 days . I use it to simulate a real PV on my roof that is linked to a battery. If I look at solar sensor, the battery should be 50% charged. If I look at the battery, it is fully charged. For ...