I've got a mining base at about layer 12, and I need power. currently, I have a geothermal generator set up, and it runs my small collection of tier 1 machines ok. However, trying to charge a batpack takes forever, and, of course, the occasional trips to the nearest (shrinking) lava lake are annoying. So, I decided to set up some maintenance free energy. My choices are wind, which won't work because I'm about 100 meters too low, solar, which would require knocking a 50 meter or so deep hole in my ceiling, which I'd MUCH rather not do, or water. Water would look like the best choice here... except it appears to be completely useless. Unless you want to be lugging buckets around (which defeats the purpose anyway) the best any one water mill appears to produce is about .25 EU, and about .21 or so realistically. Really?
So, to get the 10 EU/t I get from my geothermal generator I'd need 40 water mills? What? And if I wanted real power I'd need HUNDREDS of the things.
Is it just me, or is using water mills just a complete waste of time and resources?