Learn the impacts on demand of running appliances simultaneously

Customers on SRP's demand-based price plans pay a charge based on their on-peak demand each billing cycle. Demand is the amount of power needed to supply every electrical device running in your home at a specific point in time.

As more appliances in your home run simultaneously, your demand for power increases. This is why it's important, under the Customer Generation, Average Demand, and Residential Demand Pilot price plans, to limit the simultaneous use of appliances during on-peak hours.

Summer and summer-peak on-peak hours are from 2-8 p.m. May through October.
Winter on-peak hours are from 5-9 a.m. and 5-9 p.m. November through April.

Select the summer or winter button below to see an example of what a single-family household's seasonal peak demand might look like during on-peak hours. While the energy required to run appliances can vary by brand and model, you can modify your own demand profile below by turning the appliances on and off and seeing the estimated collective impact.

Air conditioner
Heat pump
Pool pump
Clothes dryer
Washing machine
Electric oven
Electric range
Coffee maker
Toaster oven
Hair dryer
Electric water heater
Electric vehicle charger (level 1)
Total demand

Source: EPA Energy Star®, SRP research

Please keep in mind, this tool is for illustrative purposes only.

  • Your appliances may demand more or less electricity from the grid.
  • Lights, computers, DVD players, chargers and other devices turned on in your home also impact demand.
  • The Average Demand Price Plan uses daily demand averaging to calculate the monthly demand charge. Learn more.