Tech Brew's Patrick Kulp is reporting that Microsoft has entered into a substantial agreement with Heirloom Carbon, a startup utilizing limestone rock powder to remove carbon dioxide from the atmosphere.

Microsoft plans to purchase 315,000 metric tons of carbon dioxide removal from Heirloom Carbon in a multiyear deal worth over $200 million, marking one of the largest purchases of carbon-removal credits to date.

Heirloom Carbon's technology involves heating crushed limestone powder in a kiln to separate its components, capturing and storing carbon dioxide while reducing the time it takes for limestone to absorb carbon.

This investment is part of Microsoft's commitment to becoming carbon negative by 2030, and it reflects growing interest and investments in carbon removal and capture technologies, despite their experimental nature.

Heirloom Carbon recently secured up to $600 million in funding from the Department of Energy to build facilities in Louisiana and collaborate with Microsoft in achieving their carbon reduction goals.

Source: Tech Brew (Morning Brew)

(This article was written with assistance from ChatGPT)

Written by Ursa Nova

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