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Time-of-Use (TOU)

Take control of your electricity usage with a TOU
monthly pricing plan.

By shifting the majority of your electricity usage to off-peak, you can save money and help support a cleaner environment.

TEP now offers eligible customers discounts for charging electric vehicles (EV). Learn more »

Take control of electricity usage with a Time-of-Use (TOU) monthly pricing plan.

Sometimes, just by changing when we do things we can save money. Like flying a red-eye, getting off-season hotel rates or going to a matinee movie. Now you can get the same kind of non-prime-time discounts from Tucson Electric Power. It’s all part of the Time-of-Use monthly pricing plan. By shifting the majority of your electricity usage to off-peak, you can save money and help support a cleaner environment.

How does Time-of-Use work?

Time-of-Use works by shifting energy usage from higher-priced (on-peak) time periods to lower-priced (off-peak) time periods. Customers who shift their usage will benefit with reduced pricing during off-peak hours. So first shift, then save.

Enrolling in a Time-of-Use pricing plan is free, including the installation of a new electric meter. With Time-of-Use, the time of day will determine how much you pay for each kilowatt-hour (kWh), so the new meter will track actual time of use. When calculating the bill, TEP will apply the appropriate rate to the kWh used in each different period.

Changes in your household’s energy habits may be necessary. Timing is everything! The more you are able to shift usage away from peak hours, the better off you’ll be. Savings will vary based on individual usage patterns.

Ideas on how to shift your electric use:

  • Set timers on pool or spa pumps to run during off-peak hours.
  • Operate washing machines, clothes dryers, dishwashers and non-essential appliances during off-peak hours.
  • Adjust your air conditioning thermostat to a higher temperature and heater to a lower temperature during on-peak hours or when you are not at home.
  • Install timers on electric water heaters and recirculation pumps so they operate mainly during off-peak hours.
  • Turn off all but essential lights during on-peak hours.
  • Enjoy recreational baking and electricity-consuming hobbies during the off-peak hours.

Time-of-Use helps all of us.

By conserving and shifting your usage, you also help reduce the need for UES to build and operate new power generation stations, which saves everybody money and even helps protect the environment.

Signing up is fast and free »


How have your residential Time-of-Use plans changed?

The ACC approved changes to all of TEP’s Time-of-Use programs. Overall, Time-of-Use plans have been simplified. Among the changes:

  • Mid-priced “shoulder” hours and tiered pricing have been eliminated.
  • The higher-priced summer period has been shortened from six months to five.
  • Summer peak periods are from 2-8 p.m. Winter peak periods are from 6-10 a.m. and 5-9 p.m.
  • Time-of-Use customers are required to have an Automatic Meter Reading (AMR) digital meter installed on their property.
  • A 5 percent off-peak discount is available for owners of licensed electric vehicles.
  • The customer charge, a fixed fee that helps cover the cost of maintaining the facilities used to provide electric service to your property, has been increased to $11.50 per month.

Customers on some Time-of-Use rates and other rates will be automatically enrolled in new rate plans. A letter with additional details will be mailed to Time-of-Use customers.

Could Time-of-Use rates end up costing me more every month?

A Time-of-Use plan will save you money compared to our standard pricing plans when you shift the majority of your electricity use to off-peak hours. On the other hand, your Time-of-Use plan could cost you more if you use too much electricity during peak periods.

The Time-of-Use rate is offered as an incentive to shift your electric use from on-peak to off-peak hours particularly during the summer. Being on the Time-of-Use rate will require you to make adjustments in your daily routine. If you don't change your energy usage patterns, you could pay more.

Can Time-of-Use rates save me money even if someone is home during the day?

You can save money even if you're home during peak hours. All you need to do is shift electricity usage to off-peak hours. Make some changes in your usage habits and you can be on your way to saving money.

Summer : May – September Weekdays

  • Peak periods are 2-8 p.m., weekdays except Memorial Day, Independence Day (July 4), and Labor Day.
  • If Independence Day falls on Saturday, the Weekend schedule applies on the preceding Friday, July 3.
  • If Independence Day falls on Sunday, the Weekend schedule applies on the following Monday, July 5.

All Weekends are Off-peak.

Winter : October – April I Weekdays

  • Peak periods are from 6-10 a.m. and 5-9 p.m. weekdays except Thanksgiving Day, Christmas Day, and New Year’s Day.
    • If Christmas Day and New Year’s Day fall on Saturdays, the Weekend schedule applies on the preceding Fridays, December 24 and December 31.
    • If Christmas Day and New Year’s Day fall on Sundays, the Weekend schedule applies on the following Mondays, December 26 and January 2.

All Weekends are Off-peak.

Is there a specific length of time I must remain on Time-of-Use rates?

You should plan to remain on Time-of-Use rates for at least a year in order to realize annual savings on your electric bill.

How will I know if I'm using electricity more cost effectively?

Hold on to your electric bills and see if your off-peak electricity usage changes over time, and your on-peak usage goes down. If you find you're using more energy during the low demand, low-price times of day, then you're being a very careful consumer.

Why do Time-of-Use plans offer different rates at peak and off-peak times?

Electric utilities pay more for power during periods of the day when the demand for power is high. Our costs, in the long run, become your costs. Off-peak rates are intended to encourage customers to use energy at times of the day when the cost of power is lower.

In the summer, our system peaks during the afternoon and early evening until dusk. In the winter, the costliest times are when we start our day, and around dinnertime. So the more you shift energy use to the low-cost, low-demand times, the less you pay.

What can I do in my home to conserve energy and get the most savings from Time-of-Use rates?

  • Set timers on pool or spa pumps to run during off-peak hours.
  • Operate washing machines, electric clothes dryers, dishwashers or non-essential appliances during off-peak hours.
  • Adjust your air conditioning thermostat to a higher temperature and heater to a lower temperature during peak hours or when you're not at home.
  • Install timers on electric water heaters or recirculation pumps so they operate mostly during the off-peak hours
  • Turn off all but essential lights during peak hours. For even more savings consider replacing your incandescent bulbs with energy saving compact fluorescent bulbs. They can last up to 10 times longer than incandescent bulbs and can save you up to 75 percent in operating costs.
Time-of-Use
Delivery + Base Power Supply Charges*
  Summer
May–Sep
Winter
Oct–Apr
On-peak kWh 11.75¢/kWh 9.0¢/kWh
Off-peak kWh 7.85¢/kWh 6.9¢/kWh
Time-of-Use Time Periods
Summer: May – Sep | Weekdays
 
Off-peak
On-peak
Off-peak
 
  midnight – 2 p.m. 2 p.m. – 8 p.m. 8 p.m. – midnight  
Weekdays except Memorial Day, Independence Day (July 4), and Labor Day. If Independence Day falls on Saturday, the Weekend schedule applies on the preceding Friday, July 3. If Independence Day falls on Sunday, the Weekend schedule applies on the following Monday, July 5.

All Weekends are Off-peak.
Time-of-Use Time Periods
Winter: Oct – Apr | Weekdays
Off-peak
On-peak
Off-peak
On-peak
Off-peak
midnight – 6 a.m. 6 a.m. – 10 a.m. 10 a.m. – 5 p.m. 5 p.m. – 9 p.m. 9 p.m. – midnight
Weekdays except Thanksgiving Day, Christmas Day, and New Year’s Day. If Christmas Day and New Year’s Day fall on Saturdays, the Weekend schedule applies on the preceding Fridays, December 24 and December 31. If Christmas Day and New Year’s Day fall on Sundays, the Weekend schedule applies on the following Mondays, December 26 and January 2.

All Weekends are Off-peak.

*Excludes customer charge, green energy charges and the Purchase Power and Fuel Adjustment charge or credit.

Electric Vehicle Discount

If you are a Time-of-Use customer and own a street-licensed electric vehicle (EV), you may be eligible to receive a discount on your Tucson Electric Power bill.

Fill out and submit this application, along with a copy of your EV's registration. The discount will be a 5-percent reduction to your Power Supply Charges during off-peak periods. Power Supply Charges are the sum of the Base Power Charge and the Purchased Power and Fuel Adjustment Clause (PPFAC).

Additionally, upon request from TEP, you may be required to annually submit a current copy of your EV's registration.