Hamilton city councillors voted against a proposed temporary moratorium on new data centres during a meeting held on Wednesday. The motion aimed to impose a pause on the development of data centres amid growing concerns over noise, energy consumption, and water usage associated with facilities supporting artificial intelligence technologies.

Had the moratorium passed, Hamilton would have become the first Canadian municipality to enact such a measure. The proposal was seen by some as a potential model for other cities confronting similar challenges related to the rapid expansion of data infrastructure.

However, the motion was defeated by a 10-6 vote. Opponents of the pause argued that it could deter future investments in Hamilton, which has been seeking to revitalize its industrial sector. Some councillors also expressed concerns that smaller data centre projects with research components, including one led by McMaster University, could be unfairly impacted.

Mayor Andrea Horwath spoke against the moratorium prior to the vote, emphasizing the potential negative economic consequences. “I think it will hold back Hamilton and reduce opportunity for many, many Hamiltonians and for generations to come,” she said.

The decision followed a closed-door meeting with the city's legal team, which advised that the McMaster University project would have been exempt from the proposed halt due to its research focus. This legal advice factored into arguments that the moratorium could create unnecessary uncertainty for certain developments and complicate future planning.

The debate highlights the ongoing tension municipalities face in balancing economic growth with environmental and community concerns as demand for data centres continues to rise. Hamilton’s decision reflects a cautious approach, allowing data centre development to proceed for now while the city continues to assess the implications of this expanding industry.