Well if there’s not enough sun, wind could be a better option. I don’t know much about the climate in slovenia, so either could make more sense.
As for these new kinds of batteries, I don’t have the hard numbers on hand, but I know the current installed capacity is really small. So as a product, they’re still really new.
Whoa! Juno is still transmitting?! I thought that spacecraft had a really limited lifespan, due to the radiation ring around Jupiter. Pretty awesome that it’s still working!