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Integrated Regional Resource Plan - Hamilton Sub-Region

Forecasting and Planning

A new regional planning cycle is underway for the Hamilton sub-region, and an Integrated Regional Resource Plan (IRRP) has been completed following a community engagement initiative.

This engagement initiative provided interested parties with an opportunity to offer input for consideration into the development of the IRRP.

Interested parties included but were not limited to:

  • Municipalities including the City of Hamilton, which includes the communities of Hamilton, Flamborough, Dundas, Ancaster, Glanbrook, Binbrook, Waterdown, and Stoney Creek 
  • Indigenous Communities including the Mississaugas of the Credit First Nation and Six Nations of the Grand River
  • Local distribution companies who serve the community including Alectra Utilities and Hydro One
  • Transmitters
  • Consumers and services providers for the area

All interested parties are invited to participate in this engagement initiative.

Hamilton Technical Working Group - A Technical Working Group consisting of the local distribution companies in the region, the local transmitter and the IESO will use this regional planning engagement initiative to consider input that will identify and meet local electricity needs. The Technical Working Group consists of representatives from the LDC in the area – Alectra Utilities, as well as the transmitter Hydro One Networks Inc., and the IESO.

All comments and enquiries in this engagement initiative can be directed to


Related Information

Hydro One’s Needs Assessment – May 2017

See also Hamilton sub-regional planning webpage

Schedule of Activities



Expected Actions

February 25, 2019

IESO appreciates the participation in this engagement initiative. Subscribe to receive updates for this planning region (“Burlington to Nanticoke”) here

Engagement closed

February 25, 2019

Final Hamilton Sub-Region IRRP

Final version posted following a two-week comment period

February 4, 2019

  • Presentation
  • Overview of the regional electricity planning process in Ontario
  • Overview of regional planning activities in the Hamilton sub-region
  • Update on planning activities underway to meet near-term electricity needs in the area
  • Summary of findings and draft recommendations in the upcoming Hamilton Integrated Regional Resource Plan (IRRP)

Recorded Presentation

The comment period to submit feedback on the draft Hamilton IRRP is open until February 12, 2019. Questions or feedback can be submitted to Submissions will be posted and responded to on the IESO website as part of the posting of the Final Hamilton IRRP at the end of February. 

September 2017

Final Burlington to Nanticoke Scoping Assessment Outcome Report and Hamilton Sub-region IRRP Terms of Reference

Final version posted following a two-week comment period

August 2017

Draft Burlington to Nanticoke Scoping Assessment Outcome Report

Posted for public comment