Best carbon capture tech to be awarded $100m prize by Elon Musk

The move marks his single largest philanthropic effort to date

Tesla and SpaceX CEO Elon Musk, now the world's richest person with a net worth north of $180bn, announced on Twitter his plans to give away $100m of his fortune as a prize for the "best carbon capture technology." Details on Musk’s upcoming carbon capture competition have not been released but are expected to arrive “next week,” meaning it's not yet clear how such a contest will work or even what technologies might qualify. 

Overall, carbon capture can refer to methods that prevent greenhouse gas pollution escaping from power plants and factories, or various ways of pulling it out of the atmosphere. Some startups are already developing so called direct-air capture machines that pluck carbon dioxide molecules from the air; these can then be stored underground or used to create carbon-neutral fuels. Other groups are exploring ways of using minerals, trees, plants and soil to pull down the greenhouse gas.

As MIT Technology Review, however, notes, neither on-site carbon capture or air removal are happening on large scales today principally because they're highly expensive and there's limited value for the captured gas right now. But more money and attention is flowing into both areas as the dangers of climate change grow.

Climate models show that vast amounts of carbon removal will be necessary to prevent really dangerous levels of global warming, given how much we've emitted and how slowly we're moving away from fossil fuels. Meanwhile, on-site carbon capture tools may offer promising ways of cleaning up certain tricky sectors, like cement and steel production, or to provide carbon-free electricity from natural gas plants when intermittent solar and wind sources flag.

The number of nations and corporations banking on some level of carbon capture or removal is rising sharply as they plan to zero out emissions in the coming decades, creating a growing reliance on expensive or unproven approaches—and thus an imperative to accelerate progress in these spaces.

Musk is far from the first to offer up funds to the field, either as an award or as a direct investment. A year ago, Microsoft announced plans to create a $1bn fund for "carbon reduction, capture, and removal technologies," as it looks to cancel out its entire historic emissions. Direct-air capture startups such as Climeworks, Carbon Engineering and Global Thermostat have all raised at least tens of millions of dollars of investment. And the CarbonX prize has offered $20m to companies developing ways to incorporate carbon dioxide into products, in an effort to create bigger markets and greater value for the gas.

Another $100m could certainly help whatever venture, or ventures, clinch Musk's prize. But it's a tiny fraction of his wealth and will also only go so far. Carbon Engineering, for instance, has previously said just one full-scale direct-air capture plant could cost between $300 and $500m. (It's also possible that the "towards a prize" language in the tweet means Musk will be one of several people or organizations contributing to a larger purse.)

Money aside, however, one thing Musk has a particular knack for is generating attention. And this is a space in need of it.

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