My Kepler Bb humanoids who actually originated on Kepler B#, a bigger planet that is also habitable, have 1 big problem. It has to do with energy. Right now they are using biomass for heat and only 1 family is using solar for electricity(The one with Robin and Lisa to be more specific). And only because humanoids on Kepler B# in the futuristic age, teleported them items that work with solar power and have batteries built into them. The other families in the whole underground city do not have...
Best renewable energy source?
Best renewable energy source?