Western Australia (Australia) targets 75% renewable power generation by 2030-2031 - Enerdata

Western Australia has announced a target of 75% renewable energy generation by 2030-2031. The target applies to the state's main electricity system and reflects a policy shift toward wind and solar as the primary generation sources.

Where this fits

This is a renewables-heavy target on a tight timeline. It bears directly on reliability and firming cost. Reaching 75% weather-dependent generation in a system serving a large, dispersed population with heavy industrial load requires either massive battery storage, overbuilt transmission to import firming power, or sustained reliance on gas peaking plants. The article does not detail which firming strategy WA intends to deploy, which is the question that determines whether this target is affordable or achieves its emissions goals.

What it means

WA will need firm backup for most days when wind and solar underperform. That backup will be gas, battery (which is expensive, China-sourced, and has a lifecycle carbon cost), or imports from interstate (which requires transmission investment). None of these options is priced into the headline target. The state is foregoing dispatchable firm power, including nuclear (which remains banned under federal law), while depending on a supply chain for batteries and inverters controlled by China. WA's grid will be cheaper to build per megawatt-hour but costlier to operate reliably, and less sovereign over its energy future.