The one and only reason your poco allows grid tie in the first place is it was mandated by the state, by state law they need to have certain amounts of "green energy" in their portfolio by certain dates, they got dragged kicking and screaming into the whole thing.
So, basically this is their way of "allowing" you to grid tie, they get to make the rules, right or wrong, common sense, mean nothing to them, you can piss and moan and attend meetings and talk loud and draw a crowd, but in the end you are just wasting time and effort, take it from somebody who knows, I battled the township for three years, until I got to the zoning board of appeals, they all agreed the ordinance was wrong and unfair, but, it is still the ordinance, either abide by it or pay the piper.
Unless you have a lot of money to give to lawyers it just aint worth the bull$hit.