As artificial intelligence data centres proliferate across North America, municipalities are grappling with how to classify and regulate these massive facilities, which often blur the lines between industrial, commercial, and technology uses. The rapid expansion has exposed gaps in existing zoning bylaws, leading to conflicts over land use, noise, and energy consumption.
Zoning Ambiguity Creates Challenges
Data centres typically require large amounts of electricity and water for cooling, and their operations generate noise from fans and backup generators. Yet many municipal zoning codes do not have a specific category for data centres, forcing planners to fit them into existing industrial or commercial designations that may not adequately address their unique impacts.
According to a report by the Canadian Institute of Planners, at least 15 municipalities in Ontario alone have faced rezoning applications for data centres in the past two years. “Municipalities are playing catch-up,” said Sarah Thompson, a land-use planner with the City of Toronto. “We’re seeing proposals for facilities that are as large as several football fields, and our current bylaws weren’t designed for that.”
Infrastructure Strain and Energy Demands
The energy demands of AI data centres are significant. A single large facility can consume as much electricity as a small town, putting pressure on local grids. In some regions, utilities have imposed moratoriums on new connections due to capacity constraints. The Ontario Power Generation reported that data centre load growth could exceed 2,000 megawatts by 2030, equivalent to adding a new city the size of Hamilton.
Noise complaints have also emerged. In Markham, Ontario, residents near a proposed data centre cited concerns about constant humming from cooling towers and backup generators. The municipality eventually required the developer to install sound barriers and limit nighttime operations.
Environmental and Land-Use Conflicts
Data centres often require large tracts of land, leading to conflicts with agricultural or greenfield preservation goals. In rural areas, farmers have opposed conversions of farmland to data centre campuses. The Ontario Federation of Agriculture has called for clearer provincial guidelines to protect prime agricultural land.
Environmental groups also raise concerns about the carbon footprint of data centres, especially those relying on fossil-fuel-powered backup generators. “We need a framework that ensures these facilities are built sustainably,” said Emily Chen of the Pembina Institute. “Otherwise, we’re trading one environmental problem for another.”
Policy Responses and Best Practices
Some municipalities are beginning to adopt specific data centre zoning categories. The City of Ottawa, for example, recently amended its official plan to include a “technology campus” designation that sets standards for setbacks, height, and noise. Vancouver has proposed requiring data centres to achieve carbon-neutral operations by 2030.
Provincial governments are also stepping in. In Quebec, the government launched a consultation on data centre regulation, aiming to balance economic development with community and environmental concerns. Meanwhile, Alberta’s Municipal Affairs Ministry has issued guidelines for municipalities to assess data centre proposals.
Looking Ahead
As AI adoption accelerates, the number of data centres is expected to grow by 20% annually over the next five years, according to industry analyst firm IDC. Municipalities will need to update their planning tools to manage this growth effectively. “We can’t afford to be reactive,” said Thompson. “Proactive zoning and infrastructure planning are essential to ensure these facilities benefit communities without causing harm.”
