Business rates and charges

As of November 1, the OEB moved to winter time periods. TOU rates are listed in the following table, which also indicates the hours to which these rates apply.

These rates cover the cost of electricity purchased on your behalf. Toronto Hydro collects this cost from you, without mark-up, and pays it directly to our suppliers.

View the OEB's TOU and ULO holiday schedule

As of May 1, 2023, the OEB introduced a new ULO price plan for RPP customers. ULO rates are listed in the following table, which also indicates the hours to which these rates apply.

ULO price periods are the same in the winter as they are in the summer — the following pricing is in effect from November 1, 2025 to October 31, 2026

These rates cover the cost of electricity purchased on your behalf. Toronto Hydro collects this cost from you, without mark-up, and pays it directly to our suppliers.

View the OEB's TOU and ULO holiday schedule

As of November 1, the OEB moved to winter tier thresholds. The tier threshold for small business customers is 750 kWh/month, all year round.

These rates cover the cost of electricity purchased on your behalf. Toronto Hydro collects this cost from you, without mark-up, and pays it directly to our suppliers.

Most General Service customers with a monthly demand greater than 50 kW — who don’t have a contract with a retailer — pay the wholesale electricity price and Global Adjustment electricity charge. Toronto Hydro collects both charges from you, without mark-up, on behalf of the Independent Electricity System Operator (IESO).

Effective May 1, 2025, the IESO announced that the Hourly Ontario Energy Price (HOEP) will now be known as the Ontario Electricity Market Price (OEMP). Customers' electricity bills will look the same. For more information on the OEMP, please visit the IESO's website.

Customers with interval meters are charged the Ontario Electricity Market Price (OEMP), which is the price that's charged to Toronto Hydro customers for their electricity consumption. The OEMP consists of the Day-Ahead Ontario Zonal Price (OZP) adjusted by the Load Forecast Deviation Adjustment (LFDA). The LFDA is an adjustment based on differences between the day-ahead forecast and actual demand and the price the market pays to account for those differences. The OEMP is calculated by adding the Day-Ahead OZP and the LFDA, which can be positive or negative, for each hour.

You may choose to purchase your electricity from another company by entering a contract with a licensed electricity retailer. Your contract specifies a fixed electricity price for a set number of years. Unlike Toronto Hydro's rates, the fixed price is not regulated by the OEB. Please visit the OEB's Retail Energy Contracts page for more details.

Refer to the following tables for current rates and charges. For an explanation of the charges and credits, please refer to the list of terms and definitions at the bottom of the page.

Refer to the following tables for current rates and charges. For an explanation of the charges and credits, please refer to the list of terms and definitions at the bottom of the page.

Refer to the following tables for current rates and charges. For an explanation of the charges and credits, please refer to the list of terms and definitions at the bottom of the page.

Refer to the following tables for current rates and charges. For an explanation of the charges and credits, please refer to the list of terms and definitions at the bottom of the page.

Refer to the following tables for current rates and charges. For an explanation of the charges and credits, please refer to the list of terms and definitions at the bottom of the page.

Refer to the following tables for current rates and charges. For an explanation of the charges and credits, please refer to the list of terms and definitions at the bottom of the page.

Effective July 1, 2010, a Harmonized Sales Tax (HST) of 13% is applied to electricity bills. The implementation of HST is mandated by the Province of Ontario. For information on HST, please visit the Ontario Ministry of Finance website or call the HST hotline at 1-800-337-7222.

The provincial government announced a change to the OER from 13.1% to 23.5%, effective November 1, 2025. The Ontario government introduced the OER as an expanded rebate providing bill relief that is applied to customer bills, largely offsetting price changes on the electricity line. The rebate is applied to bills for most residential consumers, long-term care homes, farms and many small businesses.

Learn more about the OER

These charges are applied to current customers who have an unmetered electric water heater billed by Toronto Hydro on a flat rate basis. Toronto Hydro no longer offers this flat rate billing option for new customers.

As of May 1, 2002, flat rate (unmetered) water heater energy usage is billed on an estimated average daily kWh basis. Your estimated usage is determined by the size of your water heater, the wattage of the water heater electric elements and on the number of days in the billing period. If you have an unmetered electric water heater, you’re being billed on the higher tiered rate of the Regulated Price Plan.

If you have any questions, please visit our contact page to reach us by phone or using our online contact form.

As a customer, you may receive charges for other specific services. View a list of specific service charges that may be applied to your bill statement.

Customer Charge

The Customer Charge covers, together with the Distribution Charge, the costs Toronto Hydro incurs to deliver electricity to your business, building and maintaining the distribution system, administration and billing.

Distribution Volumetric Rate

The Distribution Charge, together with the Customer Charge, covers the costs Toronto Hydro incurs to deliver electricity to your business, build and maintain the distribution system, administration and billing.

Transmission Charge

The Transmission Charges are variable charges based on a per kWh or kW basis, depending on the rate class. These charges include the Network and Connection charges, and cover the costs involved in transmitting electricity from generators to the city. Toronto Hydro passes this cost through to you, without mark-up.

Transformer Allowance for Ownership (if applicable)

Transformer Allowance to those customers that own their transformation facilities.

Rate riders are temporary costs or credits on utility bills. The rate rider is a mechanism used to flow through costs that are incurred by a distribution utility, or refunds provided to the distribution utility, that were not included in its tariff distribution rates at the time those rates were approved by the OEB. All rate riders must be approved by the OEB before they are applied to customer bills

Disposition of Capacity Based Recovery (CBR) Account

This charge reflects the difference between the cost of CBR program in the wholesale energy market and CBR amounts billed to Class B customers.

Disposition of Change in Useful Life of Asset — Effective 2025–2026

This credit (refund) reflects the difference in 2023 and 2024 revenue requirement attributed to updated depreciation rates (implemented in 2023) compared to the previous rates.

Disposition of Change in Useful Life of Asset — Effective 2025–2028

This credit (refund) reflects the difference in 2023 and 2024 revenue requirement attributed to updated depreciation rates (implemented in 2023) compared to the previous rates.

Disposition of Cloud Computing Costs

This charge captures the incremental costs related to cloud computing implementation.

Disposition of Deferral/Variance Account

This charge reflects the clearance of residual balances for accounts relating to variances for a number of energy-related pass-through costs.

Disposition of Deferral/Variance Accounts for Non-Wholesale Market Participants

This charge reflects the clearance of residual balances for accounts relating to variances for a number of energy-related pass-through costs (applicable only for Non-Wholesale Market Participants).

Disposition of Excess Expansion Deposits

This credit (refund) reflects excess expansion deposits.

Disposition of the Gain on Property Sale

This credit (refund) is for net gain on the sale of surplus property.

Disposition of Global Adjustment

This charge reflects the variance between Global Adjustment paid to the Independent Electricity System Operator (IESO) and collected from customers. This rate rider only applies to customers who are not on the Regulated Price Plan (Non-RPP), enrolled with a retailer contract.

Application of Operations Center Consolidation Plan

This credit (refund) is for net gain on the sale of surplus properties.

Disposition of PILs and Tax Variance

This credit (refund) reflects the savings in payment in lieu of taxes due to introduction of Bill C-97.

Disposition of Wireless Pole Attachment Revenue

This credit (refund) is associated with wireless pole attachments.

Disposition of Wireline Pole Attachment Revenue

This charge is associated with wireline pole attachments.

Smart Metering Entity Charge

On April 14, 2022, the OEB approved a decrease in the Smart Metering Entity Charge to be collected from General Service < 50 kW customers effective from January 1, 2023 to December 31, 2027, on behalf of the Smart Meter Entity (SME). This charge, which is applied on a per 30-day basis, recovers the costs incurred by the SME to collect, manage, store and retrieve information related to the metering of General Service < 50 kW customers’ electricity usage in Ontario.

Standard Supply Service – Administration Charge (if applicable)

This is an administration charge of $0.25 stated on a 30-day basis. If your billing period is different than 30 days, the RPP administration charge will be prorated accordingly. This is a service charge for customers who haven’t contracted with an electricity retailer for their energy supply.

Wholesale Market Service Charge

This charge covers costs such as market regulation and management of the system. Toronto Hydro collects this charge, without mark-up, on behalf of the IESO.