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Region Overview

The Greater Ottawa Region covers the municipalities bordering the Ottawa River from Stewartville in the West to Hawkesbury in the East and North of Highway 43. At the center of this region is the Ottawa Area, comprising the City of Ottawa and surrounding municipalities including Kanata, Nepean, and Orleans. The region is divided into two sub-regions:

  • Ottawa Area Sub-region: This area comprises primarily the City of Ottawa. It is the second largest urban centre in Ontario with a population over 1.1 million and a mix of electricity customers including government and commercial facilities, light industry, and residential customers.

  • Outer Ottawa Sub-region: This sub-region comprises the eastern and western parts of the Greater Ottawa Region. The eastern part is bordered by the City of Clarence-Rockland, Municipality of Casselman, and eastward to Champlain Township, while the western part is located to the West of Kanata.

Region's Local Distribution Companies
  • Hydro 2000 Inc.
  • Hydro Ottawa Limited
  • Hydro Hawkesbury Inc.
  • Ottawa River Power Corporation
  • Hydro One Networks Inc.
  • Renfrew Hydro Inc.



Map: Greater Ottawa
 


Current Status

The Third Regional Planning cycle for this region was initiated with publishing of Needs Assessment report in December 2022 by Hydro One and followed by releasing of Scoping Assessment in March 2023 and Integrated Regional Resource Plan in July 2025 by the IESO. It is expected that the Regional Infrastructure Plan, which is the final step of Regional Planning cycle will be completed by February 2026.​

Accomplishment (Most Recent Shown First) Status Completion Date
Integrated Regional Resource Planning (3rd Cycle)
 Completed
 July 2025
Scoping Assessment (3rd Cycle)​
 Completed
 March 2023
Needs Assessment (3rd Cycle)​
 Completed
 December 2022
Regional Infrastructure Planning (2nd Cycle)
 Completed December 2020
Integrated Regional Resource Planning (2nd Cycle)
 Completed March 2020
Scoping Assessment (2nd Cycle)
 Completed August 2018
Needs Assessment (2nd Cycle)
 Completed June 2018

*The completed reports are available below. 


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Relevant Documents

Regional Infrastructure Planning (RIP)
Name
 Completion Date
RIP Report – Greater Ottawa (2nd cycle) December 2020
RIP Report – Greater Ottawa December 2015

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Integrated Regional Resource Planning (IRRP)
Name
 Completion Date
Ottawa Area sub-region IRRP – Report (3rd Cycle) July 2025
Ottawa Area sub-region IRRP – Appendices (3rd Cycle) July 2025
Ottawa Sub-region IRRP – Report (2nd Cycle) March 2020
Ottawa Sub-region IRRP – Appendix (2nd Cycle) March 2020
2015 - Ottawa Area - IRRP - Appendix April 2015
2015 - Ottawa Area - IRRP - Report April 2015

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Needs Assessment (NA) and Scoping Assessment (SA)
Name Completion Date
Greater Ottawa SA – Report (3rd cycle) March 2023
Greater Ottawa NA – Report (3rd cycle) December 2022
Scoping Assessment Report – Greater Ottawa (2nd Cycle) August 2018
Needs Assessment Report – Greater Ottawa (2nd cycle) June 2018
Needs Assessment Report - Greater Ottawa - Outer Ottawa Sub-region July 2014


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Local Planning (LP)
Name Completion Date
Local Planning Report - Supply to East Ottawa Area November 2015
Local Planning Report - B5D - D5A Load Restoration September 2015


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Additional Documents
Name Completion Date
Letter to H1 RE Ottawa June 2014