I pay about $10/mo with APS here in Phoenix on my 15.3kW system. I get paid retail rate for anything except excess generation, and then it's 3 cents per kWh. I'll overproduce about 6,000kWh this year, so that more than covers my monthly bill, but not much more.
$5/mo isn't a big deal, certainly, but APS was asking for between $50-100/mo extra from new solar rooftop owners. Not only that, they waged a very dishonest campaign against rooftop solar. They gave at least $3.7m to a lobbyist who then funneled it to outside astroturf groups to run commercials and ads. At first APS went on record denying they had any involvement, saying that the interest groups were acting on their own, but the excellent reporting by Ryan Randazzo at the Arizona Republic uncovered their lie and they finally admitted that it was their money financing the smear campaign. They painted rooftop solar owners as mooches who wanted someone else to pay their bills, not as people who give a damn about pollution, climate change, etc.
The ruling now opens the door for more increases, and the head of the ACC is a lackey for APS who voted against the .70/kW increase, as he wanted more. I believe APS is due for a new rate hearing in 2015, and if the ACC is more conservative than it is now (although five out of five members are Republicans, anything is possible), then we will see this fight start anew.
Fairness is one thing, but APS's actions had nothing to do with fairness and everything to do with protecting their monopoly.
On a happier note, it will take APS about 6 years to recover the money they spent on this campaign at $5 per month for each new solar install, so other utilities are unlikely to waste their money, time and reputations. Whether utilities like it or not, they are being disrupted and there's very little they can do about it unless they adapt. Dinosaurs like APS might limp into the future with a more limited role, but their day in the sun is over (pun definitely intended).