Time of use pricing

[kevin1]

@stephan.hesmer,

In my TOU R script posted here:

Sense ToU Calculator for PG&E

Here’s another view on costs… Time of Use EV-A schedule vs. the traditional E-1 residential schedule with tiering. It’s an eye chart but kind of shows all the computations that goes into each type of billing. For my house the E-1 baseline is 10.1kWh/day during summer and 10.9kWh/day in winter. The three tiered costs per kWh today are: Tier 1 - $0.21536/kWh, Tier 2 - $0.28478/kWh, Tier 3 - 0.44095/kWh. The bottom line, I save about 750/year by using TOU and moving most of my car charging to off…

I decided to do the TOU cost calculations for all devices on an hourly basis, but then separate out by device Name, as well as BillingMonth and TOU Period when it comes time to aggregate.

# Aggregate data by billing month
SenseBill <- aggregate(cbind(kWh, Cost) ~ BillMonth + BillTo + Name + TOUPeriod, data=SenseDaily, FUN=sum)

When it came to aggregating kWh to do the Tiering calculation, I used:

data = SenseBill[SenseBill$Name %in% Totals,] where Totals is c(“Total Usage”, “Solar Production”).

to filter out just the mains and solar, in this step:

# Aggregate all Total Usage and Solar Production regardless of TOU to get monthly usage for tiered costing
NetBillkWh <- aggregate(kWh ~ BillMonth + BillTo, data = SenseBill[SenseBill$Name %in% Totals,], FUN=sum )

I should also note that with PG&E, Tiered pricing and TOU pricing are mutually exclusive. Tiered pricing is the default, but typically more expensive for big users of electricity (folks with EVs and AC).