Regional Electricity Planning - Greater Ottawa

Forecasting and Planning

Regional planning for the Ottawa Area Sub-Region was completed in July 2025. This engagement initiative provided Indigenous communities, municipalities, customers and interested parties with an opportunity to offer input for consideration into the development of the 2025 Ottawa Area Sub-Region Integrated Regional Resource Plan (IRRP).

Technical Working Group - A Technical Working Group, consisting of Hydro Ottawa, Hydro One Networks Inc. and the IESO will continue to stay in touch on the implementation of recommendations and timing of the next regional planning cycle. To stay informed on future electricity planning activities for this region, subscribe to receive updates on Greater Ottawa.

All comments and enquiries in this engagement initiative can be directed to engagement@ieso.ca.

Related Information

2025 Ottawa Area Sub-Region Integrated Regional Resource Plan (IRRP)

2025 Ottawa Area Sub-Region Appendices

2023 Greater Ottawa Scoping Assessment Outcome Report

December 2022 Hydro One Needs Assessment - Greater Ottawa

February 2020 Ottawa Sub-Region Integrated Regional Resource Plan (IRRP)

February 2019 IESO Hand-off Letter to Hydro One - Ottawa

2018 Greater Ottawa Region Scoping Assessment Outcome Report

2015 Ottawa Area IRRP

See also the Ottawa Area regional planning web page

Schedule of Activities

Date	Materials	Expected Actions
July 31, 2025	Ottawa Area Sub-Region Electricity Plan posted 2025 Ottawa Area Sub-Region Integrated Regional Resource Plan (IRRP) 2025 Ottawa Area Sub-Region Appendices IESO Response to Feedback to Public Webinar #3 Communication	Engagement closed
June 30, 2025	Deadline for public comment on Public Webinar #3 Feedback form Feedback Received: 3G Energy Corp. Aaron Kelly E. O’Driscoll Enbridge Gas Inc. Regional Municipality of Durham	All feedback posted
June 9, 2025	Public Webinar #3 Presentation Ottawa Economic Assessment Supplemental Information (67MB excel spreadsheet) Communication	Recorded Presentation
April 8, 2025	IESO Response to Feedback to Public Webinar #2
January 2, 2025	Deadline for public comment on Public Webinar #2 Feedback Form Feedback Received: Aaron Kelly BluWave-ai Boltzmann Institute Enbridge Gas Inc. Martin Adelaar Ottawa Renewable Energy Co-operative	All feedback posted
December 12, 2024	Public Webinar #2 Presentation IRRP Forecasting Methodology Local Achievable Potential Study - Technical Approach Communication	Recorded Presentation
October 23, 2024	IESO Response to Feedback to Public Webinar #1
June 14, 2024	Deadline for public comment on Public Webinar #1 Feedback form Feedback Received: Aaron Kelly City of Ottawa Environment and Climate Change Canada Enbridge Gas Inc. iSolara Solar Power Industrial Wind Action Canada Martin Adelaar Nicky Trudell Ottawa Renewable Energy Co-operative Pollution Probe Roger Peters Taggart Group of Companies
May 24, 2024	Public Webinar #1 Presentation: Overview of preliminary regional demand forecasts and draft engagement plan Draft Engagement Plan Communication Data Tables	Recorded Presentation
March 20, 2023	Final Greater Ottawa Region Scoping Assessment Outcome Report IESO response to feedback for the Scoping Assessment Webinar Communication	Final version posted
February 28, 2023	Deadline for public comment on draft Greater Ottawa Region Scoping Assessment Outcome Report Feedback form Feedback Received: City of Ottawa Gillian Cooper University of Ottawa	All feedback to be posted
February 14, 2023	Public Webinar Presentation Overview of the regional electricity planning process in Ontario Update on planning activities underway in the region Overview of the Scoping Assessment Next steps	Recorded Presentation
February 8, 2023	Draft Great Ottawa Region Scoping Assessment Outcome Report	Draft posted for public comment
January 26, 2023	Launch Greater Ottawa Scoping Assessment engagement Communication