16 February 2018, The Guardian, It’d be wonderful if the claims made about carbon capture were true. The International Energy Agency warned this week that, under current energy policies, Australia is unlikely to meet its 2030 climate commitments. While the agency had lots to say about the plunging costs of renewables and the need for strong market signals to encourage the retirement of old and inefficient coal generation, Josh Frydenberg, the federal environment and energy minister, seized on the agency’s support for carbon capture and storage (CCS) – despite the technology’s long history of big promises and meagre results. Last April, Frydenberg visited the newly opened Petra Nova CCS project in Texas. In a video posted to social media the minister, decked out in the obligatory hi-vis vest and hard hat, yells above the noise that the $1bn project is “helping to reduce the carbon footprint by some 40%”. It’d be wonderful if it were true. An estimated 6.2% of the Petra Nova power station’s emissions are captured, compressed and then piped 130km to help extract stubborn oil out of a depleted oil field. In the process, an estimated 30% of the carbon dioxide leaks back into the atmosphere, not to mention the emissions that will ultimately be released when the extracted oil is consumed. Last month, the Minerals Council of Australia was spruiking the “21 large-scale CCS facilities in operation or under construction around the world including in Canada and Texas”. Sounds impressive, if you still trust the MCA’s spin. You shouldn’t – 19 of the 21 projects have nothing to do with coal; there are exactly two “large scale” coal CCS projects globally. And, no, they’re not large. The Canadian project, Boundary Dam, has averaged only 0.591 million tonnes of carbon dioxide over each of its first three years. The $1.5bn project would need to be scaled up 31 times to capture the emissions of New South Wales’s Bayswater power station – an inconceivable investment. Read More here
28 February 2018, Nature Climate Change Letters, Biomass-based negative emissions difficult to reconcile with planetary boundaries. Under the Paris Agreement, 195 nations have committed to holding the increase in the global average temperature to well below 2 °C above pre-industrial levels and to strive to limit the … Continue reading →