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

For a typical California home using 507 kWh a month, TOU-D-4-9PM is cheaper by about $112 a year ($194 against $203 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 2026-10-05Typical use 507 kWh/mo, California

Head to head

ScenarioTOU-D-4-9PMTOU-D-PRIMECheaper
Typical home, per month$194$203TOU-D-4-9PM
All-in price per kWh38.3¢40.1¢TOU-D-4-9PM
Home + EV, charged at the cheapest hour$286$277TOU-D-PRIME
Home + EV, plugged in at 6 pm$340$340Tie
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, 8 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$232$162$176$151$157$180$214$305$240$173$159$178
TOU-D-PRIME$227$166$181$159$165$203$236$317$259$178$165$182

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

July weekday.

Off-peakPeak
34.4¢60.4¢34.4¢12a3a6a9a12p3p6p9p12a

TOU-D-PRIME: price by hour

July weekday.

Off-peakPeak
27.8¢62.4¢27.8¢12a3a6a9a12p3p6p9p12a

TOU-D-4-9PM or TOU-D-PRIME: common questions

Is TOU-D-4-9PM or TOU-D-PRIME cheaper?

For a typical California home using 507 kWh a month, TOU-D-4-9PM is cheaper by about $112 a year ($194 against $203 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. Adding an EV driven 1,000 miles a month and charged at each plan’s cheapest hour, TOU-D-PRIME gives the lower total ($277 against $286 a month).

What is the difference between TOU-D-4-9PM and TOU-D-PRIME?

TOU-D-4-9PM 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. 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.

More SCE comparisons

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 60.4¢.
  • The cheapest July weekday hour costs 34.4¢, so moving 1 kWh out of the top hours saves 26.0¢.
  • January weekdays range from 33.4¢ to 51.9¢.
  • Summer pricing applies Jun–Sep; winter pricing Oct–May.
  • Weekends differ: Mid-peak 4 pm–9 pm.
  • 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 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.

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