[jyl]

Portland has a feed in tariff program. It opens periodically and fills up same day. $0.46/kW I think, locked for 15 years. Residential rate appx $0.11, so that's pure profit. I ran a payback calc, used $2K for install so that was too low, anyway the payback if I got into the feed-in tariff would be very quick. I have to look into the other local incentives.

I'm still wondering, though - suppose you have 10 years left on your roof, is it sensible to put on a PV system without doing the roof at the same time? Or will the PV panels basically halt deterioration of the roof beneath them?