By the way, the cost of solar is going to be cheaper then coal this year. Another piece of propaganda from the pro-carbon folks. I worked in the industry from 2008-2013 and the priced dropped dramatically.
I personally paid $12,000 for my system, but got a 20 year financing at my local credit union and my monthly payment is $87. It eliminated a $50-60 a month electric bill and they PAY ME $40-$50 on a average per month for the credits i make. I have refrigerated air on my two story house so i'm no hermit :D
https://www.bloomberg.com/news/articles/2017-01-03/for-cheapest-power-on-earth-look-skyward-as-coal-falls-to-solar