Solar Power is the renewable energy source I would power my ecological paradise. As time goes on, it will become cheaper to produce and use. More power should be produced efficiently with better materials.
I would live in the mountains and utilize all that is accessible to me, first utilizing some sort of power wall system to capture all the renewable energy starting with the solar panels atop my house and perhaps a ground mount not too far away.
If there were a stream nearby and a grassy plain I would definitely have to utilize some sort of windmill or water windmill.
If some hot springs are found nearby I would definitely have to use thermal energy capture in the form of a steam engine that is connected to an inverter to charge up my power banks. Perhaps even a small nuclear energy reactor that some companies are developing. Exciting stuff happening and I am happy that a game like this exists to stoke the imaginations of would be eco architects.