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Direct Air Capture (DAC) units suck in air, extract CO2 & then store it underground or make it available for other uses (greenhouses, algae farms, concrete production). Stripping CO2 from air can be energy-intensive, reducing the overall benefit. But Southern Green Gas (SGG), an Australian company, is trialling a new solar-powered DAC technology.
The SGG DACs are small (about the size of 2 household fridges), so can be set up in an array much like a solar farm. With the added benefit of local manufacturing & creating globally tradeable negative emissions certificates - this is one worth watching.
Gillian Corban
Madeline Cunningham
IdeaSpies