Why not use solar and batteries? There are no clouds to block the sun, the days are two weeks long and it shines on the whole moon so that if you needed to, you could run on batteries for extra power as needed. Otherwise, do like we do on earth: run a cable from the power source, a solar array to where ever you need the power. And since it doesn't rain, and there is no wind, you will never need to clean the solar panels. Well, maybe once every millennium, but that's all the maintenance you'll ever have to do. Cheap at twice the price.