As recently as the Stern Review in 2006, carbon capture and storage from coal-fired power stations was seen as the most promising clean energy technology on offer. This was before the huge decline in the cost of solar PV and the more modest, but still substantial progress on wind energy. Since then, the technology has dropped off the radar, to the point that many reports don’t even mention it. But I just got an invite to a conference on the subject, so I thought I would take another look.
The blurb refers to a number of projects “Callide and Surat Basin in Queensland, CarbonNet in Victoria, and South West Hub in Western Australia”. A quick survey suggests that these are mostly at “proof of concept” stage, rather offering a technology that could actually be implemented on a large scale. Globally, the site says
The Global Status of CCS Report: February 2014 states that there are 12 large-scale CCS projects in operation globally and nine under construction. Overall, these 21 projects have a total capture capacity of almost 40 million tonnes of CO2 a year.
If my arithmetic is right, the entire global effort is about equivalent to the impact of Australia’s Renewable Energy Target:the large scale component calls for 41 000 GWH a year by 2020: my rule of thumb is 1MWh = 1 tonne CO2.
There’s also a report on CCS in the New York Times, which is optimistic, but very vague on cost.
That’s disappointing: from Australia’s point of view, a cheap, safe method of CCS would have resolved the climate change problem, at least as regards electricity, with no adverse impact on our coal industry. I’d be interested in comments from more informed readers.