Suburban bus depot to be upgraded to support charging for up to 85 electric buses

EnergyAustralia has been selected to upgrade the Oakleigh bus depot in Melbourne's south-east to support charging for up to 85 electric buses. The work includes grid upgrades, new switchboards, charging units and chargers, with CDC Victoria planning to expand from its current eight battery electric buses to 77 at peak capacity. The multi-year upgrade will occur alongside normal depot operations.

Where this fits

This is a materials and supply-chain story wearing a transport sustainability badge. Eighty-five electric buses means eighty-five large lithium battery packs, each requiring processed cobalt, nickel, lithium and rare earths. Nearly all processed battery-grade minerals come from China or pass through Chinese refineries. A single depot's bus fleet electrification locks in mineral dependence for the vehicle's lifecycle. The story also exposes a hidden grid cost: bus depots now need dedicated charging infrastructure and grid capacity that a diesel fleet never required. That cost is real, it is growing as more depots convert, and it sits outside the headline economics of "cheap renewables."

What it means

Victoria is betting its public transport on a supply chain it does not control and cannot easily diversify. If China restricts exports of refined battery minerals or processing capacity, bus fleets grind to a halt mid-transition. More broadly, the depot upgrade is symptomatic of the electricity transition's structural problem: every electric vehicle, every home heat pump, every battery storage site needs grid reinforcement and charging hardware that adds cost and complexity to the total system. These costs are real and are compounding across transport, heating and grid storage simultaneously. A firm, energy-dense alternative like nuclear would avoid this minerals bottleneck and the need for perpetual grid expansion.