A Scottsdale homeowner described how a $26,000 rooftop system cut punishing summer power bills to essentially zero. If the situation seemed too good to be true, that's because it was, as the angry utility company ended up scoring the upper hand. What happened? The homeowner took to the r/solar subreddit and said they had panels installed on their 2,300-square-foot North Scottsdale house by Harmon Solar and paid cash to meet the cutoff for Arizon…