Equipment and methods proved at commercial scale to mineralize and sequester carbon dioxide gas in finished concrete have earned their developers, CarbonBuilt and CarbonCure Technologies, top honors in NRG Cosia Carbon Xprize, a $20 million global competition centered on managing and monetizing emissions from coal and natural gas combustion. The companies will receive $7.5 million each to further develop their technologies for ready mixed and manufactured concrete production and curing. They prevailed among eight other finalists—three from the United States, two from Canada, one from China, India, and United Kingdom—in a six-year competition to see which team could capture the most carbon dioxide in the highest valued product(s). The 10 finalists received $500,000 for reaching the third (2019-2020) of three Carbon Xprize rounds. Launched in 2015 with 47 submissions from teams in seven countries, the competition progressed under the carbon-minded Xprize Foundation of Culver City, Calif., plus partners NRG Energy Inc., Houston-based power provider, and Canada’s Oil Sands Innovation Alliance (COSIA), Calgary. Teams were charged with minimizing their energy, water, and land use, as well as overall carbon footprint.