Origin wants to supersize the Eraring battery to make it easily the biggest in the country - Renew Economy

Origin Energy has proposed expanding the battery storage system at its Eraring coal station in New South Wales. The company wants to build what would become Australia's largest grid-scale battery, superseding the current record holder. The proposal is part of Origin's strategy to transition the aging coal plant toward renewable energy integration.

Where this fits

This move highlights the hidden cost of a renewables-dominant grid: the need for massive firming capacity. Eraring's battery expansion is not a sign that renewables have solved the intermittency problem. It is proof that they have not. Every major renewable build now requires co-investment in storage or gas peaking plants to cover the gaps when sun and wind fail. The battery alone will not provide firm power; it will discharge within hours. Australia is instead layering cost upon cost, solar panels, wind turbines, transmission overbuild, batteries, and gas backup, to replicate what a single nuclear plant delivers as a package. That nuclear alternative remains illegal.

What it means

Australia is committed to paying the full-system bill for weather-dependent generation without the dispatchable backbone that would make it efficient. Each battery expansion is a patch on a design flaw, not a solution to it. The materials for these batteries, lithium, cobalt, nickel, flow through Chinese supply chains. Building the world's largest battery at Eraring locks in deeper dependence on those supply lines for maintenance and replacement cycles. A genuinely resilient, sovereign energy system would pair renewables with firm domestic capacity. Instead, Australia is building one that will remain hostage to both weather volatility and Chinese manufacturing dominance.