Ontario Electricity Bill Calculator
Province of Canada · Utility: Hydro One / Toronto Hydro / Alectra (OEB-regulated)
Regulated by the Ontario Energy Board (OEB) under the Regulated Price Plan (RPP). Features seasonal Tiered thresholds (1,000 kWh winter / 600 kWh summer) and the 23.5% Ontario Electricity Rebate (OER).
Each province is regulated separately; figures are representative averages, not a live feed.
Electricity Bill Calculator
Estimate your Canada electricity bill in CAD (C$) using average Provincial Utility Commissions (OEB, AUC, BCUC, Régie de l'énergie) rates.
Auto-populated from reference data. Edit anytime to match your utility bill.
Flat base customer fee billed each month regardless of usage.
| Energy Charges | C$36 |
| Fixed / Standing Charges | C$35 |
| Statutory Rebate (23.5%) | -C$17 |
| Tax (13%) | C$7 |
Estimate only — verify current rates with your local utility or Provincial Utility Commissions (OEB, AUC, BCUC, Régie de l'énergie).
Ontario Electricity Rates, Tiered Slabs & Seasonal Thresholds
Statutory retail electricity pricing orders established by the Ontario Energy Board (OEB) under the Ontario Energy Board Act, 1998.
| RPP Plan & Pricing Band | Rate (¢/kWh) | Effective Timing / Slabs | Regulatory Status |
|---|---|---|---|
| Tier 1: Winter Baseline | 12.0¢/kWh | First 1,000 kWh/month (Nov 1 – Apr 30) | OEB Regulated |
| Tier 1: Summer Baseline | 12.0¢/kWh | First 600 kWh/month (May 1 – Oct 31) | OEB Regulated |
| Tier 2: Upper Consumption | 14.2¢/kWh | Above 1,000 kWh (winter) or 600 kWh (summer) | Standard Tier |
| TOU: Off-Peak | 9.8¢/kWh | Weekdays 7 PM – 7 AM, all weekends & holidays | Off-Peak Band |
| TOU: Mid-Peak | 15.7¢/kWh | Winter 11 AM – 5 PM / Summer 7–11 AM, 5–7 PM | Mid-Peak Band |
| TOU: On-Peak | 20.3¢/kWh | Winter 7–11 AM, 5–7 PM / Summer 11 AM – 5 PM | Peak Band |
| Ultra-Low Overnight (ULO) | 3.9¢/kWh | Every day 11 PM – 7 AM (On-peak 39.1¢ 4–9 PM) | EV / Overnight |
Understanding Your Ontario Electricity Bill Breakdown
Residential electricity bills across Ontario—whether serviced by Toronto Hydro, Hydro One, Alectra Utilities, or Hydro Ottawa—are divided into three distinct components approved by the Ontario Energy Board (OEB):
- Electricity Supply Charge (RPP): The cost of the electricity you actually consume, calculated through either Tiered pricing, Time-of-Use (TOU), or Ultra-Low Overnight (ULO).
- Delivery Charges: Composed of a fixed monthly customer service fee (averaging $25 to $40/month depending on your local distribution company) plus variable transmission and distribution volume rates.
- Regulatory Charges: Wholesale market administration and rural settlement costs, billed per kilowatt-hour.
The 23.5% Ontario Electricity Rebate (OER)
Pursuant to Ontario Regulation 363/16 under the Ontario Rebate for Electricity Consumers Act, 2016, all residential consumers receive an automatic 23.5% credit deducted from the pre-tax total of your electricity supply, delivery, and regulatory charges. Crucially, the 13% Harmonized Sales Tax (HST) is calculated after this 23.5% rebate is subtracted, significantly lowering final household tax liability.
Worked Winter Household Example (1,000 kWh on Tiered Plan)
For an urban household consuming 1,000 kWh in January under the OEB Tiered pricing schedule with an estimated $35.00 fixed monthly customer charge:
- 1. Electricity Supply (1,000 kWh × $0.120/kWh): $120.00 CAD
- 2. Fixed Delivery & Regulatory Fees: $35.00 CAD
- 3. Pre-Rebate Subtotal ($120.00 + $35.00): $155.00 CAD
- 4. Ontario Electricity Rebate (23.5% credit): -$36.43 CAD
- 5. Net Taxable Balance ($155.00 - $36.43): $118.57 CAD
- 6. Harmonized Sales Tax (13% HST on $118.57): $15.41 CAD
- Total Net Payable Bill: $133.98 CAD
How This Calculator Works
This tool multiplies your electricity usage in kWh by the average per-unit rate for Ontario, adds any fixed monthly service charge, then applies the local tax rate to estimate your total bill. Domestic (household) and commercial (business) connections are calculated separately because Hydro One / Toronto Hydro / Alectra (OEB-regulated) bills them on different rate schedules. Enter your usage above to see the energy charge, fixed charge and tax broken out individually, updated instantly as you type.
Tips to Lower Your Electricity Bill
- ✓ Switch to LED bulbs — they use up to 80% less energy than incandescent bulbs for the same brightness.
- ✓ Set air conditioners to 24–26°C (75–78°F) rather than running them colder than needed; each extra degree saves roughly 3–5% on cooling costs.
- ✓ Unplug chargers and electronics left on standby — phantom load can quietly add 5–10% to a monthly bill.
- ✓ Run washing machines and dishwashers with full loads, and on off-peak hours if your tariff has time-of-use pricing.
- ✓ Clean or replace air conditioner filters every 1–3 months so the compressor doesn't have to overwork.
- ✓ Re-run this calculator month to month with your actual meter reading to catch unusual usage spikes early.
Frequently Asked Questions
Who regulates electricity rates and delivery fees in Ontario? +
Retail electricity prices, distributor rate cases, and consumer protection codes in Ontario are governed independently by the Ontario Energy Board (OEB) under the Ontario Energy Board Act, 1998. Wholesale grid operations and dispatch are managed separately by the Independent Electricity System Operator (IESO).
What is the difference between Tiered and Time-of-Use pricing in Ontario? +
Under Tiered pricing, your rate depends strictly on total monthly consumption (12.0¢/kWh for baseline power, 14.2¢/kWh above the seasonal threshold). Under Time-of-Use (TOU) pricing, rates change by hour of the day: Off-Peak (9.8¢), Mid-Peak (15.7¢), and On-Peak (20.3¢).
Can I switch between Tiered, Time-of-Use, and Ultra-Low Overnight plans? +
Yes. Under OEB customer choice regulations, all eligible residential and small commercial consumers can switch between TOU, Tiered, and ULO rate structures at any time by submitting an election form through their local utility provider's online portal.
What is the Ontario Electricity Rebate (OER)? +
The Ontario Electricity Rebate is an ongoing provincial government credit that automatically deducts 23.5% from the subtotal of electricity, delivery, and regulatory charges on eligible residential, farm, and small business bills before 13% HST is applied.
Why do winter and summer Tiered consumption thresholds differ? +
The OEB sets the lower Tier 1 threshold at 1,000 kWh per month in winter (November 1 to April 30) to account for higher seasonal lighting and indoor heating requirements. In summer (May 1 to October 31), the Tier 1 threshold drops to 600 kWh per month, reflecting lower non-heating base energy usage.