​Large Use > 5,000 kW customers are charged for their electricity based on the spot market price as established hourly by the Independent Electricity System Operator (IESO). The IESO provides detailed information about how the hourly charges are determined, forecasts and historical rates.

Global Adjustment (GA) charges are also applicable to customers that are billed for Electricity at Spot Market Price. The GA is the difference between the total payments made to certain contracted or regulated generators/demand management projects, and market revenues. Customers are encouraged to visit the IESO website for further information on the GA.

January 1, 2016

The Ontario Energy Board has approved Horizon Utilities' 2016 distribution rates.  A rate increase was necessary to continue investment in aging distribution system infrastructure to address declining system reliability. 

For a Large Use Service customer using 10,000 kW, the total bill impact of all new and revised 2016 rates is 0.27%.

Delivery Service Charge

Specific Charge and DescriptionRate
Delivery Service Charge Per Month$23,704.20
​Loss Adjustment​***see below ​for calculation

*** The Loss Adjustment calculation is: (Adjusted Usage - Measured Usage) x the current electricity rate per kWh.

Delivery, Regulatory and Debt Retirement Charges

Specific Charge and DescriptionRate
​Delivery - Variable Distribution Charge Class A Non-Wholesale Market Participants

Wholesale Market Participants

Class B Non-Wholesale Market Participants

per kW



Transmission Charge ConnectionPer kW$2.4379
Transmission Charge NetworkPer kW$3.0917

Wholesale Market Service Charges
Class A Class A customers will also
have a Capacity Demand Recovery
charge on their bill that is based
on their individual peak demand factor.

Class B Non-Wholesale Market Participants

per kWh

per kWh



Standard Supply ServicePer Month$0.25
Debt Retirement Charge - HamiltonPer kWh$0.0070
Debt Retirement Charge - St. CatharinesPer kWh$0.0068
​Ontario Electricity Support Program​Per kWh​$0.0011

Standby Charge

Customers with generation capabilities can reserve system capacity. The charge is applied to the amount of reserved load transfer capacity contracted or the amount of monthly peak load displaced by a generating facility.

Specific Charge and DescriptionRate
Standby Charge Per kW$1.3985


View previous rates​​