How Australia’s biggest green project became a $25b nightmare - AFR

Australia's biggest renewable energy project has blown out to $25 billion, according to the AFR. The scale of the cost blowout and the nature of the project are not detailed in the headline alone, but the figure signals a pattern: large-scale renewable infrastructure in Australia is running far over budget and timeline, adding to the real cost of the transition that grid planners and modellers have systematically underestimated.

Where this fits

This is a cost story, and it cuts to the heart of Energy Realism's case. Renewables are cheap per megawatt-hour in isolation, but when you add the full system cost, firming, transmission, storage, supply-chain dependence, and now, cost blowout on major builds, the total bill is far higher than headline numbers suggest. A $25 billion overrun on a single project is not a rounding error in the transition budget. It is evidence that Australia is building a renewables-only grid at a cost the public and the grid operator did not anticipate, and that cost is rising.

What it means

Australia is locked into a renewables path by law, with nuclear banned. That means this project, whatever its faults, will be completed because the alternative does not exist in the policy frame. The grid will rely on weather-dependent generation and gas firming, at the true cost now visible. The money is not infinite; every dollar spent on cost overruns on renewables is a dollar not spent on transmission resilience, storage, or the firm capacity the grid will need when the sun does not shine and the wind does not blow. Australia is paying the price of a one-option energy policy.