Connection Assessment and Approval (CAA) Process: Obtaining an Assessment

A brief overview of the CAA process with links to relevant documents and forms plus a link to the process flowchart for each are provided below. Detailed information is available in Market Manual 2.10, Connection Assessment and Approval.

As the applicant, you must establish a detailed project design before beginning the CAA process. We recommend that you consult with the applicable transmitter or distributor to seek advice regarding the preferred point of connection. This is especially important in situations where system constraints may influence the connection or where new equipment is required to be installed within transmitter or distributor-owned facilities.

1. System Impact Assessment (SIA) - SIA Flowchart

An SIA is a mandatory assessment conducted by the IESO in order to assess the impact of the connection proposal on the reliability of the integrated power system.

SIA Applications

2. Expedited System Impact Assessment - Expedited SIA Flowchart

An expedited SIA, which does not require a formal study, will be conducted when the connection proposal does not represent a major system change and is not expected to have a major impact on the reliability of the integrated power system. Guidelines for determining if an expedited SIA is appropriate can be found in Section 9.2 of Market Manual 2.10.

3. Optional Feasibility Study - Feasibility Study Flowchart

Proponents may request an optional Feasibility Study in order to determine the technical acceptability of a new or modified connection to the IESO-controlled grid and to identify alternate connection options.

Feasibility Study Applications

Use of Consultants

Connection applicants may wish to engage a consultant to perform connection assessment studies or Feasibility studies. For further details refer to the IESO's Guidelines for Performance of Connection Assessment Studies by Consultants.


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