Transmission in Ontario

Transmission availability tables have been developed to provide you with a general indication of the electricity system's ability to accommodate new renewable generation projects. The tables indicate availability on transformer stations and transmission circuits. You should talk to your local distribution company to determine the availability of distribution system infrastructure for your project.

The values shown in the tables are intended only to provide general guidance to applicants. Generation capacities exceeding the levels indicated in the tables can sometimes be accommodated once projects are assessed using the transmission availability test. Other technical factors may also be found during this test that restrict the amount of generation that can be connected.