Launch solar satellites to power your megabase each satellite produce 10MW of completely pollution-free energy
It uses no runtime code at all so is completely UPS friendly (probably more than solar panels)
A quite simple mod just produce and launch the satellites and you'll receive a beacon use the beacon to manufacture a microwave receiver to power your base
The beacon is quite resistant and drops to the ground if the building is destroyed so you'll hardly lose your precious satellites
Receivers come in different levels capable of receiving the power of 1,10,100 and 1000 satellites they are quite compact compared to solar panels and work anywhere you place them but the power is just like solar use it or lose it

if you have discord you can find me on this channel
https://discord.gg/vya8KqY