Gross Load Billing

For Distribution-connected Customers

Gross Load Billing (GLB), like a Standby Administration charge, is the mechanism Hydro One uses to recover the cost of providing reserved capacity to customers and to eliminate cross-subsidization by other customers. GLB means that some components of your Hydro One invoice will be billed “gross” of generation, not “net” of generation. For up-to-date information on the application of GLB, please refer to section 2.4.5 of our Conditions of Service, or our current distribution rate order.

Frequently Asked Questions

Which customers are subject to GLB?

GLB applies to Sub-Transmission customers with Load Displacement Generation facilities and to Local Distribution Companies (LDCs) with embedded generation. It also includes Energy Storage facilities.

What criteria qualifies a customer for GLB?
  1. The required approval for the generation facility was obtained after October 30, 1998

  2. The GLB will be applicable to the generation facility if any single generating unit at the facility exceeds the threshold listed below, regardless of cumulative size of the generation facility:

    • equal to or greater than 1 MW with non-renewable generation

    • equal to or greater than 2 MW for renewable generation (wind, solar, biomass, bio-oil, bio-gas, landfill gas, or water).

What charges are billed at gross Demand?
  • Delivery (all based on the overall peak demand for a billing period):

    • Common ST Lines

    • Transmission Line Connection Service Rate

    • Transmission Transformation Connection Service Rate/HVDS High Facility Charge

    • Volumetric Rate Riders

  • Example: 500 kW + 2,000 kW generation = 2,500 kW billed peak demand

What charges are billed at net of generation?
  • Transmission Network Service Charge (based on the peak reached on business days from 7 a.m. to 7 p.m. – local time)

    • Net Demand
      Example: 500 kW (2,000 kW generation netted out) = 500 kW billed demand for Transmission Network Service Charge

  • Commodity & Regulatory Charges

    • Net consumption (kWh)
      Example: Total consumption(1,800,000 kWh) minus total generation (1,440,000 kWh) = 36,000 billable kWh

What is the impact to fixed charges?
  • Additional Meter Charge:

    • Additional metering is required to measure the generation to calculate the gross load bill.

    • Where possible, this metering should be Hydro One owned and maintained.

    • If a separate Meter Service Provider is used, there will not be an additional meter charge applied by Hydro One.

How is my Class A qualification impacted by GLB?

Class A qualification is assessed on average peak Demand kW net of generation. This may result in not meeting Class A qualification or it may not be the optimal billing method net of generation.

Contact Information 

If you have any questions, or would like to review settlement impacts with further details around generation vs. load profile, please contact us at: 

Hydro One Business Customer Centre
1-866-922-2466 (Monday to Friday, from 8:30 a.m. to 4 p.m.)