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.https://www.southerngreengas.com.au/negative-emissions.html
ERM’s Dolphyn (Deepwater
Offshore Local Production of HYdrogeN) project is exploring offshore hydrogen
production option - a 10MW floating wind turbine with built-in electrolyser will
convert sea water into green hydrogen. There is no water constraint, no electricity
grid connection issue and the hydrogen can be shipped out by ammonia-powered
vessel soon (EU’s ShipFC project)?