Electricity Bill Calculator Ontario

Calculate your Ontario electricity bill with this free online calculator. Estimate your monthly costs based on your electricity usage, time of use, and current Ontario Hydro rates.

How to Use This Calculator

To calculate your Ontario electricity bill:

Enter your monthly electricity usage in kilowatt-hours (kWh)
Select your electricity plan type (Time of Use or Standard)
If using Time of Use, enter your usage breakdown for On-Peak, Mid-Peak, and Off-Peak periods
Click "Calculate" to see your estimated monthly bill

The calculator will display your estimated monthly cost, including the Ontario Energy Charge and the Ontario Power Authority (OPA) fee.

Formula Used

The electricity bill is calculated using the following formula:

Total Bill = (Energy Charge + OPA Fee) × 1.13 (HST)

Where:

Energy Charge = Usage × Rate
OPA Fee = $12.24 per month (as of 2023)
HST = 13% provincial sales tax

For Time of Use plans, the Energy Charge is calculated separately for each rate period.

Worked Example

Let's calculate a monthly bill for a Standard plan with 500 kWh of usage at $0.12/kWh:

Energy Charge = 500 kWh × $0.12/kWh = $60.00 OPA Fee = $12.24 Subtotal = $60.00 + $12.24 = $72.24 Total Bill = $72.24 × 1.13 = $81.57

Your estimated monthly bill would be $81.57.

Ontario Electricity Rates

Current Ontario Hydro rates as of 2023:

Plan Type	Rate Period	Rate (cents/kWh)
Time of Use	On-Peak (7:00-23:00)	12.0
	Mid-Peak (7:00-23:00)	9.0
	Off-Peak (midnight-7:00)	6.0
Standard	All Day	12.0

Note: Rates are subject to change. Always verify with your electricity provider for current rates.

Frequently Asked Questions

How accurate is this calculator?

This calculator provides an estimate based on standard Ontario Hydro rates. Actual bills may vary due to provider-specific rates, promotions, and additional fees.

Does this calculator include all fees?

Yes, the calculator includes the Ontario Power Authority (OPA) fee and applies the 13% HST. However, some providers may charge additional fees.

How do I find my electricity usage?

You can find your usage on your electricity bill or by checking your online account with your provider.