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Distributed Generation


Small, Mid-sized & Large Embedded Generators (Over 10 kW)

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Forms for Generators Over 10 kW
Form A - Pre-FIT​ Consultation Application​
Form B - Connection Impact Assessment (​CIA) Application​​​​​​​​​​​

*NEW* ​​​​​A new and improved CIA application form (Form B) has been posted above. The form is now a fillable Adobe PDF allowing for easier electronic completion and submission. More info on the new form can be found here.

Form B Instructio​ns​ and Form B Checklist​​
CIA (Form B) Study Agreement​ (NOTE: Must submit with Form B)
CIA (Form B) Study Agreement Checklist
Connection Cost Estimate Study Agreement ​
Distribution Connection Agreement (DCA) Application

Information for Connecting Generators Over 10 kW

Available Capacity on Hydro One's Distribution System

Connection Process
Connection Impact Assessment (CIA)

Distribution Connection Agreement (DCA) Application​​

Distributio​n O​perating Map (DOM) Request​​

Embedded Generation Single Line Diagram (SLD) Requirements​

Frequently As​ked Questions

Pre-FIT Consultation

System Impact Assessment (SIA)
Technical Requirements (Rev 3 added April 15, 2013)

Information for Connected Generators Over 10 kW

Bell CDMA Decommissioning Program​

Expansion Deposit Refunds
Gross Load Billing - ​Distr​ibution-connected Customers​​​​​​

Gross Load Billing - Transmission-connected Customers​

NextGeneration eNewsletter
Welcome Package for Distributed Generators

Important: Please note Hydro One does not permit in-series connections for customers connecting generating facilities under the IESO's FIT 5 or microFIT 4.0 programs.

News​​ ​
July 1, 2017: New and improved CIA (Form B) Application​
February 1, 2016: O​EB 2016 Distribution Rate Order
January 1, 2016: Introduction of Simplified CIAs
April 23, 2015: OEB Final Rate Order​ - 2015-2019 Distribution Custom Rate Application (EB-2013-0416)​
For more information please contact our Distributed Generation Connections Group at DxGenerationConnections@HydroOne.com or 1-877-447-4412 (choose option 2 from the IVR).​

Micro-embedded Generators
(10 kW or less)

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Forms for Generators 10 kW or Less
Form C - M​icro-Generation Connection Application Form 

​Important Notes for microFIT and Net Metering Customers 10 kW or Less

  • ​​​​Streamlined Services now in effect for microFIT and Net Metering customers 10 kW or less: ​On November 28, 2016 we consolidated two teams into one to serve you better​. This means the original team that helped connect your microFIT​ ​​or Net Metering account/project will continue to assist you with any customer service needs after your project is connected.

    Distribution Generation Department
    for microFIT and Net Metering Customers ​

    ​​Email Inquiries: 

    Phone Inquiries: 
    1-877-447-4412 (Press 2 or say “Generator”,  then when prompted, Press 2 again o​r say “microFIT”)


    Monday - 8:30am-5:00pm
    Tuesday - 8:30am-5:00pm
    Wednesday - 8:30am-5:00pm
    Thursday - 8:30am-5:00pm
    Friday - 8:30am-5:00pm
    Saturday - Closed
    Sunday - Closed
  • Original signed copies required for all submissions​: Effective November 20, 2015, our requirements for successful Micro-embedded Generation applications have changed. Customers who receive an Offer to Connect from Hydro One are now required to submit original signed copies of their documents by mail only. Electronic copies will not be accepted. Please read the bulletin for more information.

  • Note regarding incurring costs: Applicants submitting a Micro-Generation Connection Application (Form C) may or may not receive an Offer to Connect from Hydro One. Applicants who incur costs related to their proposed project without an Offer to Connect in their possession INCUR THOSE COSTS AT THEIR OWN RISK.​

  • Important: Please note Hydro One does not permit in-series connections for customers connecting generating facilities under the IESO's FIT 5 or microFIT 4.0 programs.​

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Combined Heat and Power Standard Offer Program 2.0
Technical Requirements
Metering Requirements