Global Adjustment

All electricity customers in Ontario pay a Global Adjustment (GA), which covers the cost of building new electricity infrastructure in the province, regulated rates paid to electricity suppliers under contract and the costs of delivering the province’s energy efficiency and conservation programs. In general, the GA is lower when the Hourly Ontario Energy Price (HOEP) is higher, and vice-versa.

The Hourly Ontario Energy Price (HOEP) in relation to the average Global Adjustment (GA) from 2011 to 2021. In general, when HOEP is low GA is high and vice-versa. HOEP was at its highest in 2014 at 3.6¢/kWh. GA was at its highest in 2020 at 11.8¢/kWh.

Customer Classes

All electricity customers in Ontario pay Global Adjustment as either a Class A or Class B customer.

Class A Customers

Class A customers are medium and large businesses that are able to participate in the Industrial Conservation Initiative (ICI). The GA paid by a Class A customer is based on its share of total demand during Ontario's top five peak demand hours. For example, if a Class A customer is responsible for two per cent of Ontario’s peak demand, they will be billed for two per cent of the province’s total GA costs.

Class B Customers

Most electricity customers in Ontario are Class B. Once the amount of GA billed to Class A customers has been settled, the remainder is passed onto Class B customers.

  • For residential customers and most small businesses, GA is included in time-of-use or tiered rates
  • For medium-sized businesses, GA appears as a separate line item on their electricity bill

Global Adjustment | Power Data

All electricity customers in Ontario pay Global Adjustment (GA), which covers the base costs of running the electricity system. Learn more about what GA is used for.