Team led by UCLA professor wins $7.5 million NRG COSIA Carbon XPRIZE

On April 19th, 2021, UCLA reported A group of UCLA engineers has become the first university team to win the grand prize in the NRG COSIA Carbon XPRIZE global competition. By mitigating the carbon footprint of concrete, the team’s invention could eventually be a major step in the global battle against climate change.

The UCLA CarbonBuilt team, led by Gaurav Sant, a professor of civil and environmental engineering at the UCLA Samueli School of Engineering, won $7.5 million in the competition’s track for technologies related to coal-fired power generation.

The winning technology is a first-of-its-kind, eco-friendly approach for taking carbon dioxide emissions directly from power plants and other industrial facilities — emissions that would otherwise go into the atmosphere — and infusing them into a new type of concrete invented by the team. As it hardens and gains strength, the specially formulated concrete permanently absorbs and traps the greenhouse gas.

Through extensive research at UCLA and testing at the Integrated Test Center, a facility outside of Gillette, Wyoming, the researchers demonstrated that their process reduced the carbon footprint of concrete by more than 50% while producing concrete that was just as strong and durable as the traditional material.

Each CarbonBuilt concrete block stores about three-quarters of a pound of carbon dioxide — a significant amount considering an estimated 1 trillion concrete blocks will be produced annually by the year 2027.

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