So, solar panels installed yesterday and finishing up today on our house. Related MPP - they might turn the system on before the end of December, which normally would be what I would want - get that money making machine on the roof running ASAP. However, congress might pass BBB and if the section on solar credits remains with what the house passed, I think that would mean additional tax credit for 4% of the system cost, which would be even better financially for us, but only if the system is put into service after the new year.
Not sure this really counts, but another possible MPP with this project - "solar array is uglier than I expected". Sort of want to see if they can re-orient and maybe add 4 more panels to a certain section of roof. They said "we can fit 22 panels on your roof" when I asked what was the most they could put - wound up with a 4 high X 5 wide with panels in landscape orientation on one section, basically completely covering that part of the roof with reasonable margins around it all, but then the other section has a 2 high X 1 wide portrait orientation. And conduit running over the hitch in the roof and into the main array that is really annoying to look at.
Not serious about this change though - system is a bit oversized already as we're anticipating some changes to our electric usage coming over the next several years. Maybe once the house is all electric and the additional draw is fully known, I'll see if it makes sense to add a few more panels. Gonna make money with it, but damn is it ugly - I need to figure out some way to better hide the conduit at least.