Minnesota doctor installed solar panels, and in one standout month his power bill fell to $4

Minnesota doctor installed solar panels, and in one standout month his power bill fell to $4

For one Minnesota homeowner, rooftop solar has turned summer sunshine into serious savings. Three years into using rooftop solar in New Ulm, Dr. John Brownfield saw one standout month bring his combined electric and city charges down to just $4. What happened? Brownfield's property fit the profile installers look for: a house built in 1995 with a pitched roof and little to block the sun, according to The Journal. Rather than pairing the array wi…