Western Australia targets 75% renewable energy by 2030-31 under affordability plan - PV Tech

Western Australia has announced a target of 75% renewable energy by 2030-31 as part of an affordability plan. The commitment was made in the context of managing electricity costs across the state's grid. No detail is provided in the article about how the remaining 25% of generation will be sourced, what firming capacity will back the renewable fleet, or what the plan costs in absolute terms.

Where this fits

This target sits squarely on the cost and reliability pressure. A 75% renewable grid in a state with large swings in wind and solar output will require either substantial battery or pumped-hydro storage (neither of which exists at scale in WA), gas peaking capacity, or interconnection to other states. None of these options is free. The framing as an "affordability plan" obscures the whole-system cost: wind and solar are cheap per megawatt-hour, but a grid that is three-quarters weather-dependent demands expensive firming infrastructure to keep the lights on when the sun sets and the wind doesn't blow.

What it means

WA's grid will remain dependent on gas for reliability and on China for the panels, inverters, and batteries that make up the 75%. The state has no domestic manufacturing of solar or battery cells and no near-term path to sovereignty over that supply chain. If affordability and resilience are the real goals, the calculus changes sharply if firm, low-material, long-lived nuclear generation were available as an option. It is not. Australian law bans it. A 75% renewable target is being built on the assumption that gas will be cheap, available, and politically acceptable to run for decades as the grid's firming backbone. That assumption is aging poorly.