Thank you for the clarification. I really couldn't tell that what you were suggesting, was the creation of a new electric solar panel with water cooling.
In any case, I am not really interested in making such a mod. Long story short: I can't think of a reasonable implementation, I think it would add too little in terms of gameplay, and I couldn't create the graphical assets for it anyway. I wouldn't want to make mod adaptations either.
In the first place, I made this fork because I don't like all the solar panels along with accumulators and power lines. Somehow fitting the solar panels with pipes as well (they are big, you know!) would in my opinion only make all of it look worse.
But thank you for making the suggestion. I often think about how to make the power infrastructure more interesting as well.