If you didn't have the TOU billing, LADWP our utility not has 5 tiers of charging. The first being a very small allowance billed at the cheapest rate and the 5th tier being almost TRIPLE the first tier. All it takes it a very hot couple of days for people to hit the 4th or 5th tier. However, if you have solar AND TOU, you barely go past the 1st tier. See what a huge selling point that is? And then if you install the battery, you might not even have to use the grid. Fantastic!!!