Cheapest Hours

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Current sample rate record

San Diego Gas & Electric Co TOU-DR-1 Mountain Baseline Region: Cheapest Hours and Peak Times

On TOU-DR-1 Mountain Baseline Region, the summer weekday cheapest period runs 12 AM to 6 AM and 10 AM to 2 PM at 27.0 cents per kWh. Peak runs 4 PM to 9 PM at 57.8 cents per kWh. On weekends, the cheapest period runs 12 AM to 2 PM. Rate effective .

Cheapest summer price27.0¢/kWh
Summer peak price57.8¢/kWh
Summer spread30.8¢/kWh
Estimated EV value$742/year

24-hour schedule

When each price applies

Winter: January, February, March, April, May, November, December

On weekdays, the cheapest price is 33.1 cents per kWh during 12 AM to 6 AM and 10 AM to 2 PM. Peak is 50.4 cents per kWh from 4 PM to 9 PM.

Text data table
Hour startingPrice
0:0033.104¢/kWh
1:0033.104¢/kWh
2:0033.104¢/kWh
3:0033.104¢/kWh
4:0033.104¢/kWh
5:0033.104¢/kWh
6:0042.180¢/kWh
7:0042.180¢/kWh
8:0042.180¢/kWh
9:0042.180¢/kWh
10:0033.104¢/kWh
11:0033.104¢/kWh
12:0033.104¢/kWh
13:0033.104¢/kWh
14:0042.180¢/kWh
15:0042.180¢/kWh
16:0050.351¢/kWh
17:0050.351¢/kWh
18:0050.351¢/kWh
19:0050.351¢/kWh
20:0050.351¢/kWh
21:0042.180¢/kWh
22:0042.180¢/kWh
23:0042.180¢/kWh

Summer: June to October

On weekdays, the cheapest price is 27.0 cents per kWh during 12 AM to 6 AM and 10 AM to 2 PM. Peak is 57.8 cents per kWh from 4 PM to 9 PM.

Text data table
Hour startingPrice
0:0026.997¢/kWh
1:0026.997¢/kWh
2:0026.997¢/kWh
3:0026.997¢/kWh
4:0026.997¢/kWh
5:0026.997¢/kWh
6:0035.729¢/kWh
7:0035.729¢/kWh
8:0035.729¢/kWh
9:0035.729¢/kWh
10:0026.997¢/kWh
11:0026.997¢/kWh
12:0026.997¢/kWh
13:0026.997¢/kWh
14:0035.729¢/kWh
15:0035.729¢/kWh
16:0057.796¢/kWh
17:0057.796¢/kWh
18:0057.796¢/kWh
19:0057.796¢/kWh
20:0057.796¢/kWh
21:0035.729¢/kWh
22:0035.729¢/kWh
23:0035.729¢/kWh

Load shifting

What moving energy use could be worth

These estimates apply the published movable-energy assumptions to the weighted summer and winter price spread. They are not a bill forecast.

Flexible loadMovable energyEstimated annual value
EV charging3,240 kWh/year$742
Heat pump water heater1,440 kWh/year$330
Dishwasher and laundry480 kWh/year$110
Home battery3,285 kWh/year$752
Space heating and cooling480 kWh/year$110

Adjust these assumptions

Plan notes and limitations

The fixed customer charge published in this URDB record is $0.79343 per day. Taxes, minimum bills, credits, eligibility rules, and some riders may change the amount on a real bill.

URDB rates are reviewed roughly annually. This record was last updated . Confirm the current tariff with San Diego Gas & Electric Co.

Source: OpenEI U.S. Utility Rate Database rate record (NREL / DOE).

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Frequently asked questions

When is TOU-DR-1 Mountain Baseline Region cheapest?

On summer weekdays, the cheapest windows are 12 AM to 6 AM and 10 AM to 2 PM at 27.0 cents per kWh.

When is TOU-DR-1 Mountain Baseline Region most expensive?

The summer peak window is 4 PM to 9 PM at 57.8 cents per kWh.

Are weekends different?

The summer weekend cheapest window is 12 AM to 2 PM. Check the hourly schedule for the exact period.

How current is this rate?

The OpenEI record is effective June 1, 2026 and was last updated July 1, 2026.

Should I confirm this with my utility?

Yes. Rate eligibility, taxes, riders, and holiday schedules may not be fully represented in URDB.