AEMO warns on energy shortages after coal closures - MacroBusiness

AEMO has issued a warning that Australia faces energy shortages following the planned closure of coal-fired power stations. The Australian Energy Market Operator flagged the risk in commentary on the energy transition, noting that the retirement of dispatchable generation without sufficient replacement capacity poses a reliability threat to the grid.

Where this fits

This is the core reliability problem. Coal plants close on schedule; renewables are built more slowly than required, or their output is intermittent. AEMO is stating what Energy Realism holds: a grid built mainly on wind and solar needs firm dispatchable power, gas, nuclear, or backed-up batteries at scale, to remain stable. The warning cuts against the assumption that closure timelines and build timelines will align. They have not.

What it means

Australia risks brownouts or controlled load-shedding during peak demand or low renewable output if the gap between coal exit and firm replacement capacity widens. This is not a distant problem: it is a near-term operational constraint on the network. The cost of managing that constraint, whether through emergency gas generation, demand management, or imported storage, will be borne by consumers and will not be visible until the crisis is upon us. Energy security requires dispatchable capacity; AEMO's warning is a signal that we are not building it fast enough.