For more than two decades politicians, academics and industrialists have promised great things from carbon capture and storage, or CCS. But after years of trial and error and multiple project cancellations due to prohibitive costs, this highly expensive technology stores less than one-tenth of one per cent of global emissions a year. Even JP Morgan in its 2021 annual energy report sarcastically notes that the “highest ratio in the history of science appears to be the number of academic papers written about CCS compared to its real life implementation.”
The energy ecologist Vaclav Smil considers CCS a ridiculous endeavour because it will never scale up fast enough to make a dent in global emissions. The global economy now produces about 37 billion tonnes of carbon dioxide per year. Tackling 10 per cent of that problem (roughly four billion tonnes) would require the same infrastructure that now supports the entire global oil industry, which produces four billion tonnes of oil a year.
Like carbon capture and storage, direct air capture doesn’t scale up very well. Researchers recently calculated that if the world deployed direct air capture using a chemical reaction that relies on caustic soda to break down CO2 emissions to water and sodium carbonate, it would require a new mining industry.
Just to capture 25 per cent of global emissions, it would need a system of extracting caustic soda that is 20 to 40 times greater than current global production. And this system would consume 15 to 24 per cent of the world’s primary energy spending to get the job done.
The technology also has a big footprint. An industrial factory, powered by natural gas and capable of removing just one billion tonnes of carbon out of the 37 billion tonnes emitted per year, would occupy an area five times greater than Los Angeles. If powered by solar energy such a factory would require a landmass 10 times greater than Delaware.
In other words don’t expect a direct air capture unit in your backyard soon. One group of researchers concluded that the technology “is unfortunately an energetically and financially costly distraction in effective mitigation of climate changes at a meaningful scale.” Another recent study concluded that carbon capture and storage and direct air capture projects emit more carbon than they remove or store.
For more than two decades politicians, academics and industrialists have promised great things from carbon capture and storage, or CCS. But after years of trial and error and multiple project cancellations due to prohibitive costs, this highly expensive technology stores less than one-tenth of one per cent of global emissions a year. Even JP Morgan in its 2021 annual energy report sarcastically notes that the “highest ratio in the history of science appears to be the number of academic papers written about CCS compared to its real life implementation.”
The energy ecologist Vaclav Smil considers CCS a ridiculous endeavour because it will never scale up fast enough to make a dent in global emissions. The global economy now produces about 37 billion tonnes of carbon dioxide per year. Tackling 10 per cent of that problem (roughly four billion tonnes) would require the same infrastructure that now supports the entire global oil industry, which produces four billion tonnes of oil a year.
Like carbon capture and storage, direct air capture doesn’t scale up very well. Researchers recently calculated that if the world deployed direct air capture using a chemical reaction that relies on caustic soda to break down CO2 emissions to water and sodium carbonate, it would require a new mining industry.
Just to capture 25 per cent of global emissions, it would need a system of extracting caustic soda that is 20 to 40 times greater than current global production. And this system would consume 15 to 24 per cent of the world’s primary energy spending to get the job done.
The technology also has a big footprint. An industrial factory, powered by natural gas and capable of removing just one billion tonnes of carbon out of the 37 billion tonnes emitted per year, would occupy an area five times greater than Los Angeles. If powered by solar energy such a factory would require a landmass 10 times greater than Delaware.
In other words don’t expect a direct air capture unit in your backyard soon. One group of researchers concluded that the technology “is unfortunately an energetically and financially costly distraction in effective mitigation of climate changes at a meaningful scale.” Another recent study concluded that carbon capture and storage and direct air capture projects emit more carbon than they remove or store.