From an article on DecorahNews.com. Decorah Bank & Trust Company has just put into operation the largest rooftop solar installation to date in Decorah. The 22 kilowatt (kW) photovoltaic solar array sits on the bank roof. It should produce enough energy to power the equivalent of three average-sized homes. Dennis Pottratz of Go Solar in Decorah managed and installed the system with the help of local contractors. “It has been
