M3 AI Datacentre Near Melbourne Plans 225MW Expansion Amid Community Concerns

Context The M3 facility, billed as Australia’s largest hyperscale AI factory, sits less than 10 km from Melbourne’s central business district. Its rapid growth mirrors a national push to secure a foothold in the global AI and data‑centre market. Yet the expansion is unfolding alongside complaints from West Footscray residents who say the site’s noise, constant hum and diesel exhaust degrade everyday life.

Key Facts - If the Victorian government grants fast‑track planning approval, the site will double in size to cover 10 hectares by late 2027. The larger footprint will draw 225 MW of electricity, enough to power roughly 150,000 homes. - Diesel generators, which currently number 40, are slated to rise to 100 units once construction finishes, increasing on‑site emissions. - Local resident Sean Brown, who works in tech, argues the cumulative environmental impact has never been assessed. He worries his 19‑month‑old son is “growing … in the shadow of a facility whose total environmental impact … has never been assessed.” - NextDC, the owner, says the project follows all local and state regulations and that feedback mechanisms are in place. The Maribyrnong council has formally opposed the expansion but awaits the minister’s decision.

What It Means The proposed power draw places a substantial load on Victoria’s grid, raising questions about renewable sourcing and long‑term emissions. An increase to 100 diesel generators suggests a reliance on fossil‑fuel backup, potentially heightening local air‑quality concerns. Community opposition highlights a growing tension between the economic promise of AI infrastructure and the need for transparent environmental oversight. As the planning minister reviews the proposal, the outcome will signal how Australia balances digital ambition with neighbourhood health.

Looking ahead, watch for the Victorian government’s decision and any mandated environmental impact assessment that could shape future datacentre siting across the country.