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Information Regarding Generation Facilities Interconnection to NT Power

One of the goals of the Provincial Government is to create more opportunities and encourage the connection of small generation facilities to the electrical distribution grid. As a result, under the direction of the Ministry of Energy, two programs are being offered to any Ontario electricity consumer who can generate electricity from renewable resources:

These programs allow customers to generate some or all of their electric load requirements (referred to as load displacement), and also export the excess power onto the local distribution electrical grid (referred to as an embedded generator). The process is governed by regulated financial settlements with the Local Distribution Company (LDC) in accordance with the Retail Settlement Code (RSC).

What do you need to know about embedded generation? Embedded generation is considered any generation facility which is not directly connected to the transmission grid, but instead is connected to a distribution system. (i.e., NT Power.)

NT Power supports the incorporation of embedded generation facilities within the electrical distribution system. The process is guided by the latest revision of the Distribution System Code (DSC) issued by the Ontario Energy Board. The Code sets out the minimum obligations that a licensed electricity distributor (such as a LDC) must meet in carrying out its obligations. The latest revision of the Code can be found on the official website of the OEB under Industry Relations/Rules, Codes, Guidelines and Codes.

Generators of electricity are divided into different sizes in accordance with the DSC.

DER Classification Rating

≤ 10 kW


Small (a) ≤ 500 kW connected on distribution system voltage < 15 kV
(b) ≤ 1 MW connected on distribution system voltage ≥ 15 kV
Mid-Sized (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 MW


NT Power will apply its Conditions of Service for any generation interconnection costs and/or any metering changes that NT Power deems necessary to allow for settlement purposes.

List of Restricted Feeders & Other Resources

The restricted feeders listed apply regardless of the program and regardless of the DER energy source type. 

Stations – Armitage TS, Holland TS, Waubaushene TS 

Restricted Feeders: none, please contact DER Team (Click here to show mail address) for more details.  

This list will be updated at least every three months.

Other sources:

CIA Fee Chart

DER Class

Voltage Class

Project Type and Size







(a) > 10 kW and ≤ 30 kW connected on distribution system voltage <15kV


(b) ≤500kW connected on distribution system voltage <15kV



(c)> 10 kW and ≤ 100 kW connected on distribution system voltage ≥15kV


(d) ≤1MW connected on distribution system voltage ≥15kV





(a) ≤10MW but >500kW connected on distribution system voltage <15kV




(b) >1MW but ≤10MW connected on distribution system voltage ≥15kV



Large Project: >10MW


Important Notes:

  • CIA fees above are exclusive of applicable taxes
  • CIA fees represent the costs for performing the Connection Impact Assessment study only.
  • Additional fees will be required for projects that involve another LDC. NT Power shall advise DER customers of other associated CIA costs during the CIA Application phase. 
  • Depending on the type, size, voltage class and/or location of the project, an additional CIA may be required by Hydro One, and/or a System Impact Assessment by the IESO may be necessary to assess upstream system impacts.
  • CIA revisions may be charged up to 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.

Contact Information

For further inquiries on embedded generation interconnection to NT Power's system or on applications to interconnect a generation facility to NT Power's distribution system, please contact Newmarket-Tay Power's Generation Team Email: Click here to show mail address