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A Connection Impact Assessment (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.

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​​​​​​​​​​​​​​​​The LDC is required to submit a completed LDC CIA Form B  along with a payment for the CIA and a signed Study Agreement. 

​​​​​​​​​​​​​​​​Please email ​​​​​​​​​​​​​DxGenerationConnections@HydroOne.com or call 1-877-447-4412 for a Study Agreement suited to your project size.

​A complete CIA application consists of:
  • Completed and signed LDC CIA Form B

  • LDC proponent Form B signed and sealed by a licensed Ontario Professional Engineer (P.Eng)

  • Single Line Diagram (SLD) signed and sealed by a licensed Ontario Professional Engineer (P.Eng)

  • Signed Study Agreement

  • Payment in full by cheque, payable to "Hydro One Networks Inc." (see CIA Fee Schedule below).​​​​​​​​​​​​​​​​
     

Notice: New CIA fees to be implemented January 1, 2022.

CIA Category LDC Applicable Project Type/Size Cost
Small Projects ≤ 500 kW, Simplified All generation project applications (including net metering, load displacement and energy storage systems) that are: a) > 10 kW and ≤ 30 kW connecting to a Hydro One shared supply feeder with a voltage less than 15 kV;
OR

 b) > 10 kW and ≤ 100 kW connecting to a Hydro One shared supply feeder with a voltage of 15 kV or greater.

$2,054.41

$2,321.48(Including HST)
Embedded LDC Generators

All embedded LDC generation project applications(including net metering, load displacement and energy storage systems) that are:

a) > 30 kW and ≤ 250 kW connecting to a Hydro One shared supply feeder with a voltage less than 15 kV;

OR
b) > 100 kW and ≤ 500 kW connecting to a Hydro One shared supply feeder with a voltage of 15 kV or greater.

$2,996.97

$3,386.58 (Including HST)

Greater than CAE – Capacity Allocation Required Projects
All generation project applications (including net metering, load displacement and energy storage systems) that are:
a) > 250 kW connecting to a Hydro One supply feeder with a voltage less than 15 kV;
OR
b) > 500 kW connecting to a Hydro One supply feeder with a voltage of 15 kV or greater.
$9,011.83
$10,183.37
(Including HST)
​*Threshold Allocations All generation project applications (including net metering, load displacement and energy storage systems) up to 500 kW that are connecting to anyLDC dedicated feeder.

$500.00

$565.00 (Including HST)

​Greater than CAE – TS Review for LDC Capacity Allocation Required Projects ​All LDC generation project applications (including net metering, load displacement and energy storage systems) greater than 500 kW that are connecting toLDC dedicated feeder.


$5,969.89 

$6,745.98 (Including HST)







 

Important Notes:
  • CIA fees represent the costs for performing the Connection Impact Assessment study only.

  • CIA revisions will be charged 50% of the CIA costs listed in the table above.

  • Refund policy: Any money not spent will be refunded if the CIA is withdrawn before completion.