While I'm not typical, I think there are a good number in a similar position: I've got a house with a roof approaching it's end of life. I use 4MWh/month. My e

While I'm not typical, I think there are a good number in a similar position: I've got a house with a roof approaching it's end of life. I use 4MWh/month. My electricity bill goes between $1.2k and 2.4k. A Solar City roof is about equivalent in long term (20-30 yrs) cost with a much better warranty.