HomeWattCost

SCE TOU-D-4-9PM vs TOU-D-PRIME

For a typical California home using 487 kWh a month, TOU-D-4-9PM is cheaper by about $151 a year ($184 against $196 a month). TOU-D-4-9PM is cheaper below about 750 kWh a month and TOU-D-PRIME above it, with the same daily pattern of use.

Utility SCETariffs checked 2026-09-28Typical use 487 kWh/mo, California

Head to head

ScenarioTOU-D-4-9PMTOU-D-PRIMECheaper
Typical home, per month$184$196TOU-D-4-9PM
All-in price per kWh37.7¢40.3¢TOU-D-4-9PM
Home + EV, charged at the cheapest hour$279$268TOU-D-PRIME
Home + EV, plugged in at 6 pm$329$351TOU-D-4-9PM
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-4-9PM, 12 am on TOU-D-PRIME.

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-4-9PM$231$160$174$149$155$177$211$229$239$172$158$149
TOU-D-PRIME$229$167$182$163$170$198$231$247$255$185$169$160

TOU-D-4-9PM: price by hour

July weekday.

Off-peakPeak
35.3¢59.1¢35.3¢12a3a6a9a12p3p6p9p12a

TOU-D-PRIME: price by hour

July weekday.

Off-peakPeak
27.3¢59.9¢27.3¢12a3a6a9a12p3p6p9p12a

How the two plans work

TOU-D-4-9PM: Time-of-Use 4–9 pm

  • Peak 4 pm–9 pm on July weekdays; 5 of 24 hours carry the top price of 59.1¢.
  • The cheapest July weekday hour costs 35.3¢, so moving 1 kWh out of the top hours saves 23.8¢.
  • January weekdays range from 34.2¢ to 51.7¢.
  • Summer pricing applies Jun–Sep; winter pricing Oct–May.
  • Weekends follow a different schedule from weekdays.
  • Fixed charge: $24.17 a month.

TOU-D-PRIME

  • Peak 4 pm–9 pm on July weekdays; 5 of 24 hours carry the top price of 59.9¢.
  • The cheapest July weekday hour costs 27.3¢, so moving 1 kWh out of the top hours saves 32.6¢.
  • January weekdays range from 25.3¢ to 57.3¢.
  • Summer pricing applies Jun–Sep; winter pricing Oct–May.
  • Weekends follow a different schedule from weekdays.
  • 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.