But, do you have this scaling issue with Forecast.Solar?
To use Solcast, you can use this custom component:
oziee/ha-solcast-solar: Solcast Integration for Home Assistant (github.com)
Here is the main discussion:
https://community.home-assistant.io/t/solcast-global-solar-power-forecast-integration/
I tried to use Forecast.Solar last time, but I could not get it right. For whatever reason, their prediction didn’t come close to the actual production, and the chart was totally wrong. Spent days trying different things and still couldn’t get it right. Then @del13r introduced me to Solcast, and it was much better as you can see in the first screenshot. But then, I saw this scaling issue with the Energy dashboard.