A major proposed AI data centre expansion in Toronto is becoming a new flashpoint in Canada's technology sector, with local residents calling for greater scrutiny before the project moves forward.

STACK Infrastructure is seeking to expand its existing facility at 3650 Danforth Avenue in Scarborough into a 56-megawatt data centre. The project is part of the broader growth in large-scale computing infrastructure needed for cloud services and AI workloads.

However, residents have raised concerns about the potential effects of high electricity demand, water consumption, noise and pressure on local infrastructure. A community petition is calling on Toronto City Council to conduct additional due diligence before further development proceeds.

The debate highlights a growing challenge for Canadian cities: how to accommodate rapidly expanding artificial intelligence infrastructure while addressing concerns from communities located near large computing facilities.

The Scarborough project is also part of a wider national trend. Canada's push to expand domestic AI capacity is increasing demand for data centres capable of handling increasingly intensive computing workloads.

Supporters of data-centre development point to potential benefits including technology investment, digital infrastructure and economic activity. Critics, meanwhile, want clearer information about environmental impacts, infrastructure requirements and tangible benefits for nearby communities.

The controversy could become an important test for how Toronto and other Canadian municipalities manage the next wave of AI data-centre development.

As Canada's AI industry expands, the balance between technological growth and local concerns over power, water, noise and infrastructure is likely to become an increasingly important issue.