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Organizers of a $20 million contest to develop products from greenhouse gas that flows from power plants announced two winners ahead of launching a similar but much bigger competitio­n backed by Elon Musk.

Both winners made concrete that trapped carbon dioxide, keeping it out of the atmosphere, where it can contribute to climate change. Production of cement, concrete’s key ingredient, accounts for 7% of global emissions of the greenhouse gas, said Marcius Extavour, XPRIZE vice president of climate and energy. “So it’s not surprising that the winning teams focused on reducing emissions associated with

concrete, which will be a game-changer for global decarboniz­ation,” he said in a statement. Meanwhile, Musk, the electric car and space entreprene­ur, has pledged $100 million for researcher­s who can show how to trap huge volumes of carbon dioxide straight from the atmosphere and store the gas permanentl­y.

“We want teams that will build real systems that can make a measurable impact and scale to a gigaton level. Whatever it takes. Time is of the essence,” Musk, founder and CEO of Tesla and Spacex, said in February.

Both contests are organized by XPRIZE, which encourages new technology by putting up prize money for demonstrat­ing achievemen­ts. Most famously, Mojave Aerospace Ventures won a

$10 million XPRIZE in 2004 by being first to fly a privately funded, reusable rocket plane into space multiple times.

The $20 million prize announced this week had two parts: One at a coal-fired power plant in Wyoming and the other at a gas-fired power plant in Alberta, Canada. The contest focused on using carbon dioxide nabbed from the plants’ smokestack­s, and the winners showed they can trap the emissions in cement, making stronger concrete in some cases.

The winner at the Wyoming plant, Los Angelesbas­ed Carbonbuil­t, used carbon dioxide to cure concrete, trapping it in a process that also emitted less of the greenhouse gas compared with traditiona­l cement production, according to XPRIZE.

The winner in Alberta was Carboncure Technologi­es, based in Dartmouth, Nova Scotia,

 ??  ?? Image: Marcio Jose Sanchez
Image: Marcio Jose Sanchez
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 ??  ?? Image: Chad Hipolito
Image: Chad Hipolito

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