Solar + hydroelectric is a great combination because the less hydro you need, the less water you need out of your dam. Furthermore, if you're able to pump water back up into your dam, then you have an ~infinite scale battery.
Pic rel is a simulation of a 22kw system based on real 2025 solar irradiation data where I live (France). I have not started installing this, but pricing out the hardware it looks like it'll be about 8k.
