Region Overview

The St Lawrence Region covers the southeastern part of Ontario bordering the St Lawrence River. The region starts at the Gananoque on the eastern end of Lake Ontario and extends to the inter-provincial boundary with Quebec.

The City of Cornwall is supplied by Fortis Ontario with transmission lines from Quebec and not included in this Region.

Region's Local Distribution Companies

  • Cooperative Hydro Embrun Inc.

  • Hydro One Networks Inc.

  • Rideau St. Lawrence Distribution Inc.

Map: St. Lawrence

Current Status

The second Regional Planning cycle for this region was completed with publishing of RIP report in March 2022. It is expected that the Third Regional Planning cycle will be initiated in 2027 or earlier with the completion of the Needs Assessment report.

Accomplishment (Most Recent Shown First) Status Completion Date
Regional Infrastructure Planning (2nd Cycle) Completed March 2022
Needs Assessment (2nd Cycle) Completed September 2021
Regional Infrastructure Planning Completed July 2016
​Needs Assessment Completed April 2016

*The completed reports are available below.

Relevant Documents

Regional Infrastructure Planning (RIP)
Name Completion Date
St. Lawrence RIP - Report (2nd cycle)  March 2022
St. Lawrence RIP - Report  July 2016

Needs Assessment (NA) & Scoping Assessment (SA)
Name Completion Date
St. Lawrence NA – Report (2nd Cycle)  September 2021
St. Lawrence NA – Report  April 2016