is large solar panel not covered by this plugin as cannot find it in the Config

Large solar panels won't work, even if you put the entity short name in the config (solarpanel.large.deployed) because solar panels don't have any electrical inputs, which are where this plugin sends the power through.

The purpose of this plugin isn't really to alter the power generation of vanilla generators, but rather to allow entities that consume power to generate their own power (and possibly excess power). The idea is that you make the power consumers generate enough power for themselves so that they are essentially powerless, allowing you to need fewer power generators such as solar panels.

If you want to alter the power output of solar panels, the Better Electricity plugin appears to have that capability based on its code and documentation.

thanks white thunder