Yep. I upgraded. First, and most expensive is the source of electricity. That's usually in the thousands of dollars. Then, is getting it to the outlets, which a single floor with a walk in basement and no insulation in the walls is pretty easy. It gets more complicated when you branch out from that. The electrical"plumbing" in a house varies in cost based on this and, of
course, the cost of fixtures. Of course, being you get to choose your
energy type, you could try alternative energies. Good luck!