Microsoft taps Alt Carbon in sign of India’s growing role in carbon removal

Microsoft has signed a three-year agreement to buy nearly 37,000 metric tons of carbon removal credits from Indian startup Alt Carbon, marking the tech giant’s first enhanced rock weathering deal in Asia.

Under the agreement, Alt Carbon will deliver 36,920 metric tons of carbon dioxide removal credits by 2029 from its Darjeeling Revival Project in eastern India. Microsoft also has an option to purchase additional volumes if the startup meets delivery and verification milestones.