I've got a consultant coming over on tuesday to take measurements and give a more solid quote for installation.

We'll see. But I have an outbuilding with a large two plane roof and the south facing plane has no penetrations and is pretty much unshaded. Our utility rates have pretty much doubled over the last three years, and there's another ~30% increase scheduled over the next three years. Said roof is coming up on the end of its expected life, so it may be a good time to put on a new roof and put on solar at the same time.

Could someone get better ROI doing a larger solar project somewhere else? Probably. But if it maths for me, I'm going to do the project on my roof, because I don't have anywhere else to do it (well I could do a ground install, but I'd lose aesthetically)