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

Hydro One Greater Ottawa Regional Planning Website

See also the Ottawa Area regional planning web page

2025 Ottawa Area Sub-Region IRRP Engagement 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

2020 Ottawa Area Sub-Region IRRP Engagement Activities

Date	Materials	Expected Actions
March 4, 2020	2020 Ottawa Sub-Region Integrated Regional Resource Plan (IRRP) 2020 Ottawa Sub-Region IRRP Appendices	Posted
December 13, 2019	IESO response to feedback IESO response to feedback - updated August 27, 2020	Posted
November 27, 2019	Feedback due on draft IRRP recommendations Ottawa Renewable Energy Co-operative (OREC) and CoEnergy Ontario Co-operative	Posted
November 13, 2019	Public webinar #2 Presentation Overview of draft IRRP recommendations	Presentation and recorded webinar posted Seek input on draft recommendations
June 21, 2019	IESO response to feedback	Posted
June 12, 2019	Feedback due on draft engagement plan, load forecast, preliminary local needs/issues and timelines City of Ottawa Mark Aruja Ottawa Renewable Energy Co-operative (OREC) and CoEnergy Ontario Co-operative Tay Valley Township T Tung Hydraulic and Renewable Energy Technologies Inc.	Posted
May 29, 2019	Public webinar #1 Presentation Overview of the regional electricity planning process in Ontario Update on planning activities underway to meet near-term electricity needs in the area Summary of regional demand forecast, identified needs and potential solutions that have been developed	Presentation and recorded webinar posted Seek input on draft engagement plan, load forecast, preliminary local needs/issues and timelines
May 9, 2019	Launch Ottawa Area Sub-region IRRP engagement initiative Communication Draft Engagement Plan
September 2018	Greater Ottawa Region Scoping Assessment Outcome Report and Terms of Reference	Final version posted following a two-week comment period
August 2018	2018 Draft Greater Ottawa Region Scoping Assessment Outcome Report	Posted for public comment