HomeWattCost

SCE TOU-D-PRIME vs D

For a typical California home using 487 kWh a month, D is cheaper by about $147 a year ($184 against $196 a month). D is cheaper below about 800 kWh a month and TOU-D-PRIME above it, with the same daily pattern of use.

Utility SCETariffs checked 2026-10-05Typical use 487 kWh/mo, California

Head to head

ScenarioTOU-D-PRIMEDCheaper
Typical home, per month$196$184D
All-in price per kWh40.3¢37.7¢D
Home + EV, charged at the cheapest hour$270$295TOU-D-PRIME
Home + EV, plugged in at 6 pm$333$295D
Fixed charge$24.17$24.17

Typical home: California average use by month (EIA), shaped hour by hour (NREL ResStock), before taxes. EV: Tesla Model Y Long Range AWD, 1,000 miles a month; cheapest start 8 am on TOU-D-PRIME, any hour on D.

TOU-D-PRIME is an EV or electrification rate: check the eligibility rules on SCE’s tariff before switching.

Month by month

Typical-home bill each month on each plan.

PlanJanFebMarAprMayJunJulAugSepOctNovDec
TOU-D-PRIME$227$166$180$159$165$203$236$252$260$179$166$159
D$235$163$177$150$155$173$208$225$234$173$161$153

TOU-D-PRIME: price by hour

July weekday.

Off-peakPeak
27.8¢62.4¢27.8¢12a3a6a9a12p3p6p9p12a

D: price by hour

July weekday.

Same price all day
40.5¢12a3a6a9a12p3p6p9p12a

TOU-D-PRIME or D: common questions

Is TOU-D-PRIME or D cheaper?

For a typical California home using 487 kWh a month, D is cheaper by about $147 a year ($184 against $196 a month). D is cheaper below about 800 kWh a month and TOU-D-PRIME above it, with the same daily pattern of use. Adding an EV driven 1,000 miles a month and charged at each plan’s cheapest hour, TOU-D-PRIME gives the lower total ($270 against $295 a month).

What is the difference between TOU-D-PRIME and D?

TOU-D-PRIME is time-of-use (summer weekdays: Peak 4 pm–9 pm; lowest price 9 pm–4 pm next day), with a fixed charge of $24.17 a month. D is tiered: the price per kWh rises with monthly use, with a fixed charge of $24.17 a month.

More SCE comparisons

How the two plans work

TOU-D-PRIME

  • Peak 4 pm–9 pm on July weekdays; 5 of 24 hours carry the top price of 62.4¢.
  • The cheapest July weekday hour costs 27.8¢, so moving 1 kWh out of the top hours saves 34.6¢.
  • January weekdays range from 26.2¢ to 46.3¢.
  • Summer pricing applies Jun–Sep; winter pricing Oct–May.
  • Weekends differ: Mid-peak 4 pm–9 pm.
  • Fixed charge: $24.17 a month.

D: Tiered Rate Plan (Domestic), Region 9

  • In July the first 17 kWh a day cost 31.4¢ each; then 40.5¢ above 17 kWh a day.
  • An average California home (571 kWh in July) goes past the first tier, so extra load such as an EV is priced higher.
  • Fixed charge: $24.17 a month.

Your own pattern of use decides the winner: compare every SCE plan on your usage, or see all SCE plans, sources and peak hours.