Yup - I thought it was rather interesting as well. Our Powerwalls were installed and commissioned (but not actually electrically connected) a few weeks before the solar roof install due to a variety of scheduling issues on Tesla's end. This shouldn't be an issue - after all, the batteries should not be charging because I don't have PTO and haven't flipped the breaker on the solar right? With no charge (or the factory default ~20% charge) there is no need to worry about a discharge to the grid.They activated ConnectedSolutions before you got PTO?? Interesting.