i don't want to get too off topic but i had TOU-D-PRIME, our solar installers recommended to switch to TOU-D-4-9PM. we have 35 panels and no batteries. we have 2 teslas. generally, we only charge one daily but there are days we charge both. i'd say on heavy use we would use around 80+ kWh in a day. otherwise, we are either on negative or under 15kWh daily. monthly, i noticed we are on negative usage except november to february when we have less sun and more cloudy days.
what i see with 4-9 plan is:
Daily Basic Charge: 3 cents per day
Minimum Daily Charge: 35 cents per day
Baseline Credit of 9 cents per kWh on monthly baseline allocation
Example monthly allocation is 200kWh gets you $18 credit on your bill
for PRIME
Daily Basic Charge: 40 cents
Minimum Daily Charge: None
Baseline Credit: None
the rates outside 4-9pm are lower for prime. in my use case, i believe the baseline credit is an advantage because for most of the year, my monthly usage is lower than my monthly allocation (i don't know if it's 200kWh) because it's usually negative. SCE billing is really confusing. all i know is when i was on prime, i would pay about $100 monthly. now switching to TOU4-9 and annual billing i'm at $286, 9 of 12 months. with more sun, i will probably get it close to $0 once my annual bill is due in september.
just wanted to share. we may have different usage but have a look at the other rate plan and if you have solar, i would look at the annual billing instead of monthly.