Electricity Rate Plan Selection

TOU pricing has three price periods:

• Off-peak, when demand for electricity is generally lower. Ontario households use most of their electricity – nearly two thirds of it – during off-peak hours.
• Mid-peak, when demand for electricity is moderate. These periods are during the daytime, but not the busiest times of day.
• On-peak, when demand for electricity is generally higher. These are the busier times of day – generally when people are cooking, starting up their personal electronics and running heaters or air conditioners.

TOU price periods are different in the summer (May 1 – October 31) than they are in the winter (November 1 – April 30).

ULO pricing has four price periods:

• Ultra-Low Overnight, when demand for electricity is lowest on average.
• Weekend Off-peak, when demand for electricity is generally lower.
• Mid-peak, when demand for electricity is moderate.
• On-peak, when demand for electricity is highest on average.

The ULO price periods are the same in the summer as they are in the winter.

With Tiered prices, you can use a certain amount of electricity each month at a lower price. Once that limit (called a threshold) is exceeded, a higher price applies. The threshold changes with the season to reflect changing usage patterns – for example, there are fewer hours of daylight in the winter and some customers use electric heating.

In the winter period (November 1 – April 30), the Tier threshold for residential customers is 1,000 kWh, so that during the heating season households can use more power at the lower price. In the summer period (May 1 – October 31), the Tier threshold for residential customers is 600 kWh. The Tier threshold for small business customers is 750 kWh all year round.

Tiered prices give you the flexibility to use electricity at any time of day at the same price, although that price will change if you exceed the threshold during the month.