Yes, +1 . Pacific Gas and Electric in Northern CA also uses a combination of Tiers (3 tiers: baseline allowance, and then higher rate when over that up until 4 times baseline, then an even higher rate) – plus TOU (3 times lots: peak, part-peak, and off-peak rates) plus type of day (2 types: weekday and weekend). It would be really nice to add that this year 🙂