With IID’s Shift & Save! Program Time-of-Use rate, customers can save by shifting electricity use to lower-cost, off-peak hours. The price of electricity changes based on the season and the time of day energy is used.

The information below shows the on-peak and off-peak time periods for summer and winter months.

On-peak hours apply Monday through Friday only and do not include weekends or eligible holidays. Weekends and eligible holidays are off-peak all day, giving customers more opportunities to shift energy use and save.

View the TOU Residential Rate Schedule for more information.

Summer and Winter Rates

Holiday Off-Peak Days

Holidays give Shift & Save! customers another opportunity to save.

On the Shift & Save! Program Time-of-Use rate, weekends and eligible holidays are off-peak all day. That means customers can take advantage of lower-cost hours throughout the entire day by shifting activities like laundry, dishwashing, cooking, charging devices or other household energy use to these off-peak times.

The following holidays are off-peak:

• New Year’s Day — January 1*
• Martin Luther King Day — Third Monday in January
• Presidents Day — Third Monday in February
• Cesar Chavez Day — March 31*
• Memorial Day — Last Monday in May
• Juneteenth — June 19*
• Independence Day — July 4*
• Labor Day — First Monday in September
• Columbus Day — Second Monday in October
• Veterans Day — November 11*
• Thanksgiving — Fourth Thursday in November
• Christmas Eve — December 24**
• Christmas Day — December 25*
• New Year’s Eve — December 31**

* If these holidays fall on a Saturday, the preceding Friday will be off-peak. If they fall on a Sunday, the following Monday will be off-peak.

** The day on which these holidays fall will be off-peak.

Use Less During On-Peak Hours

The goal of IID’s Shift & Save! Program Time-of-Use rate is to encourage customers to use less electricity during the hours when energy demand is highest.

IID’s summer on-peak hours are 4 p.m. to 9 p.m., Monday through Friday, from May through October. This is the time of day when many households are returning home, using air conditioning, cooking dinner, doing laundry and turning on more lights and electronics. Demand can rise quickly when high temperatures place added pressure on the electric grid.

When demand is high, IID may need to rely on more costly energy resources to meet customer needs. By using less electricity during on-peak hours, customers can help reduce the need for higher-cost energy while supporting the reliability of IID’s electric system.

Small changes can make a difference. Try running major appliances before 4 p.m. or after 9 p.m. on weekdays, or anytime on weekends and eligible holidays when all hours are off-peak. These simple shifts can help customers take advantage of lower-cost hours and make the most of the Shift & Save! Program.