Hello ELGo, Thanks for your kind words. No one was more disappointed than I was to pay $4 per watt for our installation, but I just read an article that reported that the average installation of residential or small commercial solar arrays in 2011 was pegged at $6.10 per watt. That's when ours first went online. My numbers, as you call them, are a dimly remembered event from three to four years ago, so I can't answer your questions with any degree of certitude, but I'd agree with your figures. I plan to build a smaller, seasonally adjusted array in the near future and consider it good enough. mm
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