Ontario uses Time of Use (TOU) electricity pricing for many residential customers, including those in submetered buildings. Under TOU, electricity costs more during periods of high demand and less during off-peak hours. Understanding these periods can help submetered residents manage their usage.
The Ontario Energy Board sets TOU price periods. These have historically included off-peak (lowest cost, typically overnight and weekends), mid-peak (moderate cost), and on-peak (highest cost, typically weekday afternoons). The specific hours and prices are updated periodically by the OEB.
For submetered residents, TOU pricing creates an opportunity. By shifting discretionary electricity use to off-peak periods, residents may reduce their bills. Common strategies include running dishwashers and laundry during off-peak hours, using programmable timers for high-draw appliances, and being mindful of heating and cooling schedules.
Property managers should note that TOU rates are set by the OEB and passed through by the local distribution company. A licensed USMP passes through these rates with no markup, as required by the OEB Unit Sub-Metering Code. The USMP's own service charge is separate and clearly disclosed.
Some Ontario customers may be eligible for tiered pricing instead of TOU. The available rate structures depend on the customer class and the local distribution company. Your USMP can explain which rate structure applies to your building.
The practical impact of TOU on submetered buildings is that residents who are conscious of when they use electricity can see a real difference in their bills. This behavioral shift is one of the mechanisms behind the consumption reductions observed in Ontario submetering research.