Heh, if your civ is biased to start in hilly / mountainous areas then that's the clean power you'll use. But yeah, it sure seems excessive. Meanwhile, in my latest game my capital is another city with three rivers that flood and therefore three dams. Will be wonderful once I get hydro-electric. No need for wind, that's for sure. I'm trying Korea to see how quickly they can get a science victory in GS. Unfortunately I forgot that the dam counts as district that reduces the seawon's science output by one. Sigh.