Siksukr, where your metering fee is already 30 I'll assume that you're a NHEC customer. I agree that going to the effort of installing a solar array probably would be worth the effort for such a small billing. Additionally the Co-op is not subject to the PUC rulings on public utilities and they are already discounting the credits on net metering by about 25%.
Bobcatfly, I'm not fully up to speed on Wolfeboro Power, but I believe that like the Co-op they are exempt form the PUC public utility rulings because it is a privately held company. Still, based on what all the other utilities are presently doing you should remain grandfathered. If this is the case, and WP does go with discounted net metering in the future, smile because your grandfathered array should go up in value due to the grandfathered 1 to 1 exchange
All of this is somewhat uncertain because it will ultimately depend on the impending NH PUC's decision, but one thing is for sure ...there is going to be a major shakeup this summer and anyone that already has a solar system installed, or booked to be installed with the interconnect application in place will appear to have locked in a significant advantage going forward