Ontario Electricity Explained Ontario • Electricity
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Ontario Electricity Bill Calculator

Updated 2026-02-12

Use this simple estimator to approximate your monthly electricity bill. Enter your usage and estimated rates. This tool is for education only but helps illustrate how different components add up.









Tip: try different usage levels or plans to see how costs change. Shifting heavy loads to off‑peak hours can noticeably reduce totals.

What makes up an Ontario electricity bill?

An Ontario electricity bill includes several different components, not just the electricity you use. The most visible part of the bill is the energy charge based on how many kilowatt-hours (kWh) your home consumes. However, several other charges contribute to the final total.

Most residential electricity bills include energy charges, delivery charges, the Global Adjustment, regulatory charges, and Harmonized Sales Tax (HST). Because these components behave differently, a household’s total electricity cost can change even if electricity usage remains similar from month to month.

This calculator estimates the main components to give a realistic idea of how these pieces combine to form a typical Ontario electricity bill.

Typical electricity usage in Ontario homes

Electricity usage varies widely depending on the type of home and how electricity is used. Apartments and smaller homes usually consume less electricity, while larger homes or homes with electric heating can use much more.

  • Small apartment: roughly 300–500 kWh per month
  • Townhouse or small house: about 600–900 kWh per month
  • Large detached home: 1,200–2,000+ kWh per month

If you want the most accurate estimate, check the usage value (kWh) on your most recent electricity bill and use that number in the calculator above.

Why two homes can have very different electricity bills

Two homes that use the same amount of electricity can still have different monthly bills. Local delivery charges vary between utilities, and households may choose different pricing plans such as Time-of-Use or Tiered pricing.

Usage patterns also matter. For example, running appliances overnight under Time-of-Use pricing may cost less than using the same electricity during peak daytime periods.

Seasonal factors also play a role. Electricity demand tends to increase during extremely hot or cold weather, which can influence several components of electricity pricing.

Learn more about Ontario electricity billing

If you want to understand electricity bills in more detail, these guides explain the key components:

These pages provide deeper explanations of how the electricity system works and why bills change from month to month.