Microsoft signs three year carbon removal deal with Indian startup Alt Carbon for 37,000 tons
zamin.uzMicrosoft has signed a three year agreement with Indian startup Alt Carbon to purchase carbon removal credits for approximately 37,000 metric tons of carbon dioxide. The credits come from the Darjeeling Revival project in eastern India, which uses enhanced rock weathering by spreading crushed basalt on agricultural land. Alt Carbon currently works with over 35,000 farmers across 80,000 acres in West Bengal. The deal is Microsoft's first major enhanced rock weathering project in Asia. Alt Carbon has issued nearly 10,000 credits to date through this method, which the company says is the largest figure globally for this technology. Credits under the Microsoft agreement will be registered through the Isometric registry. Alt Carbon plans to issue another 15,000 credits by the end of the year. Negotiations took over a year and included rigorous scientific review of monitoring, reporting, and verification (MRV) measures. Microsoft retains the right to purchase additional credits if Alt Carbon meets targets. The agreement highlights growing demand for verified, commercially scalable carbon removal projects outside of traditional offsets.