When a gas project can’t win on the facts, it goes shopping for a new story. Last week, Woodside’s CEO Liz Westcott told a Perth business breakfast that the proposed Browse gas and CCS project could power AI data centres and keep AUKUS shipyards humming. The same project was once sold to keep the lights on in WA.
Let’s look at what Browse is.
It is the country’s biggest undeveloped gas field, pitched as feedstock to keep the ageing North West Shelf plant running until 2070. The cost has blown out to A$48.7 billion, according to a Deloitte report that Woodside commissioned itself.
Then there’s the pollution. Figures put before the federal Environment Minister estimate that Browse would generate about 1.6 billion tonnes of carbon dioxide over its life. That is more than three and a half times Australia’s entire annual emissions.
Most of that gas is bound for export. When it is burned overseas, those scope 3 emissions don’t appear in Australia’s books. The atmosphere counts them anyway.
Browse is also one of the country’s most carbon-rich fields. Woodside’s own planning documents put reservoir CO2 at around 80 million tonnes. That is pollution released just by getting the gas out of the ground.
Canberra knows this is a problem. The Future Gas Strategy expects new gas supply to manage its reservoir emissions, with the expansive and failed Carbon Capture and Storage (CCS) as the primary tool. The government has also consulted on draft offshore guidelines to reduce and, where possible, eliminate venting and flaring. A field like Browse can’t simply vent its CO2. It needs a way to dump (usually in the atmosphere) and offset it – in the spreadsheets at least.
So, Woodside has bolted on a quick fix. It proposes to use carbon dumping via CCS to capture some of that CO2 and dump it under the seabed near Scott Reef, at up to 4 million tonnes a year.
Note the ‘up to’ – it is the upper limit of zero. That would be the first offshore scheme of its kind in Australia.
Woodside says that upper limit cuts the project’s direct emissions by 53 million tonnes, or 47 per cent. Even in this best-case scenario, more than half of the direct pollution still escapes. And 53 million tonnes are about three per cent of the 1.6 billion tonnes the project would be responsible for.
The rest falls to dodgy carbon offsets. The North West Shelf extension was approved with conditions requiring Woodside to cut emissions every year and reach net zero by 2050 under the Safeguard Mechanism. Browse gas would run through that plant. Analysts at IEEFA expect Woodside to rely on so-called carbon offsets for whatever the CCS doesn’t capture. RenewEconomy reports Browse’s high CO2 content would need to be fully offset from day one.
Think about what that means. Carbon dumping via CCS and so-called offsets are how a project this size gets through the door. They let a carbon bomb claim it fits inside the rules, and they hand a big polluter more room to pollute.