Ontario Data Centre Playbook · ERO Notice 026-0853

Ontario just rewrote the rules for
data centre development.

A proposed provincial assessment framework, a proposed new electricity rate class, and municipalities already responding in different ways. Understand where your project stands while Ontario's framework is still open for comment.

Public comment closes September 12, 2026 Loading countdown…

Four things every data centre project in Ontario now needs to know.

The draft Playbook was released alongside a 30-day public comment period. Here is what developers, operators, investors and projects in Ontario's development pipeline need to know.

01

Ontario is proposing a new approval gate

Amendments to Ontario's Electricity Act now give the province authority to establish requirements for certain large loads before they connect or reconnect to the grid. Ontario is proposing regulations that would require new large data centres to obtain government approval before connecting.

02

Projects could face a new strategic assessment

The draft framework proposes assessing projects against three pillars: economic development, data security & digital sovereignty, and community investment & public trust. A weak showing could put approval at risk.

03

A new electricity rate class is proposed

Ontario is considering a separate rate class for new large data centres, potentially above a 1 MW threshold, together with exclusion from the Industrial Conservation Initiative (ICI).

04

Municipalities are already responding

Oakville has enacted a local pause on new data centre approvals. Mississauga's council has directed staff to prepare one, with a final vote expected September 16. Hamilton's council rejected a proposed moratorium 10–6 on July 15. The municipal picture is mixed — and moving independently of the provincial process.

Ontario is proposing to assess projects against three strategic pillars. How well is your project positioned?

Ontario is proposing to use these three pillars to help inform government decisions on new large data centre connections, alongside electricity system reliability, technical feasibility and cost responsibility.

Pillar One

Economic Development

Jobs created, capital invested, and the broader economic case your project makes for the province and host municipality.

Pillar Two

Data Security & Digital Sovereignty

Where data resides, who can access it, and how the project supports Canadian control over critical digital infrastructure.

Pillar Three

Community Investment & Public Trust

How the project engages the host community, and whether local and public confidence has been earned — not assumed.

Projects that engage now can help shape the framework. Projects that wait will respond to whatever comes next.

The draft Playbook is open for comment until September 12, 2026. This is the period when developers, operators and other affected stakeholders can formally put their concerns and recommendations before government while the framework is still being developed.

  • !
    Miss the window, lose the sayFormal comments to the ERO consultation must be submitted before September 12 to influence the final framework.
  • $
    Class C rate exposureProjects over ~1 MW that don't plan ahead could face materially different electricity costs and economics under the proposed rate class.
  • ×
    Municipal moratoriumsThe municipal response is mixed and moving fast — Oakville has paused approvals, Mississauga is moving toward a vote, and Hamilton's council rejected a moratorium. A strong provincial score won't settle a local fight that's already underway.

Complimentary Playbook Alignment Review.

A confidential preliminary review of your project's alignment with Ontario's proposed framework.

  • Preliminary alignment across the three proposed pillars
  • Initial electricity-rate exposure review
  • Top 3 government/community considerations
  • 30-minute discussion with a senior IGS advisor
Request your alignment review

Tell us about your project. Every request is reviewed directly by a senior IGS government relations advisor, who will follow up within one business day.

All inquiries are confidential. We never share your information with third parties.

If your project needs more than a preliminary review, we do that too.

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Data Centre Playbook Readiness Assessment

A comprehensive, project-specific assessment using IGS's proprietary 100-point methodology — evidence review, political and community risk analysis, stakeholder mapping, and a 90-day action plan.

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Government relations strategy

Municipal and provincial GR strategy for projects facing local moratoriums, council review, or a stalled provincial approval.

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ERO comment submissions

We draft and submit formal comments to the ERO consultation on your behalf — before the September 12 deadline.

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Ongoing regulatory monitoring

As the draft Playbook is finalized, we track changes that affect your project and flag what needs a response.

A government relations firm built for exactly this kind of moment.

We work across the Ontario–Michigan corridor on complex files where government policy, major investment, infrastructure and local politics collide. Our Data Centres & Digital Infrastructure practice applies that experience to Ontario's rapidly changing data centre environment — and we move at the speed a 30-day comment window demands.

TorontoOntario, Canada
DetroitMichigan, USA
WindsorOntario, Canada

Frequently asked.

Is the review really free?+

Yes. There is no cost or obligation to request it. It's a preliminary review — if it surfaces issues that call for deeper work, we may recommend our paid Data Centre Playbook Readiness Assessment or ongoing GR support, but that's always a separate, opt-in step.

Is my project information confidential?+

Yes. Every inquiry is reviewed only by a senior advisor and is never shared with third parties.

My project is still just proposed — is it too early?+

No — early-stage projects benefit the most, since there is still time to shape site selection, community engagement, and your ERO submission before the rules are final.

What happens after I submit the form?+

A senior advisor reviews your project and responds within one business day with an initial read and, if useful, recommended next steps.

Know where your project stands — before the rules are final.

Get Your Free Alignment Review