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Connection Impact Assessment (CIA) 

A CIA is a more detailed assessment of a project's impact to the grid. The results include a technical report outlining project feasibility, technical specifications needed for the project and the impacts the project would have on the distribution grid.

The Generator is required to submit a completed Connection Impact Assessment Form B, payment for the Connection Impact Assessment and a signed Study Agreement. Please email dxgenerationconnections@hydroone.com or by calling 1-877-447-4412 (choose option #2) for a Study Agreement suited to your project size.

A complete CIA application consists of:

  • Completed and signed CIA Form
  • Payment in full by cheque or money order payable to "Hydro One Networks Inc." (see Connection Impact Assessment Fee Schedule below)
  • Signed Study Agreement
  • Single Line Diagram (SLD).

NOTE: All technical submissions (Form B, single line diagrams, etc.) for projects greater than 10 kW must be signed and sealed by a licensed Ontario Professional Engineer (P.ENG).

 Project Type Project Size Cost**
Net Metering Projects  >10 kW and ≤500 kW  $3,000*
Capacity Allocation Exempt (CAE) Projects a) ≤ 500 kW connected on distribution system voltage ≥ 15 kV
b) ≤ 250kW connected on distribution system voltage < 15 kV
c) not a microFIT facility
 
 $3,000*
Small Projects (except Net Metering)  a) ≤ 500 kW connected on distribution system voltage < 15 kV
 b) ≤ 1MW connected on distribution system voltage ≥ 15 kV
 $10,335*
Mid-sized Projects  a) ≤ 10 MW but > 500 kW connected on distribution system voltage
 < 15 kV
 b) > 1 MW but ≤ 10 MW connected on distribution system voltage
 ≥ 15 kV
 $10,335*
Large Projects > 10 MW  $10,405*

*Effective August 27, 2010. See Notice for details and background. 

**NOTE:

  • Refund policy: cost not spent will be refunded if the CIA is withdrawn before completion
  • An additional $10,000 will be required for project that involves another LDC (this does not apply to Net Metering Projects)
  • Projects that apply for a new CIA after rescinding a previous one will be charged an amount equal to 50% of the applicable CIA fee if the project connects to the same station and feeder.
  • Please note that the costs listed above do not include applicable taxes (HST).