The way that some companies can charge upwards of $20,000 just for a wind turbine, I think, is insane . Likewise with solar power systems. $5,000+ for a "professional" installation is nothing but ludicrous to me. But what does my opinion matter? I've been building and installing solar power systems & windmills for myself and my friends & neighbors for 3 years now. I've got the whole process down to such a fine art that I proudly tell anyone up front that the systems cost no more than $200 to build and install. I must have built & installed 50+ separate systems (...