I have talked to Nashville Electric Service and its fairly common in my area to add a second service to a property where the lots are being split up for a second tall skinny home or a garage is being converted to a remote dwelling unit. They seemed more inclined to do that then to add more power...
Long time lurker looking for assistance in Nashville.
So I have a detached garage I have converted to a decent shop for bicycle production. Currently I am running 40 amps from my house underground (took a lot of clean up to get that) to the shop and using a 15hp American Rotary phase converter...