at the end, you can sign up with a new contract, and also get upgrades to new stuff, or buy it outright and keep going. (something like that)

My wife is the smart one, and she wasn't able to attend the sales pitch, so we're meeting again friday.

Neighbor has solar city, loves them and the setup. He bought it all outright up front. (all his energy costs = 9k$ or something) and only pays the monthly tax to excel = $8