Microsoft has signed a take care of Indian startup Varaha to purchase greater than 100,000 tons of carbon dioxide removing credit over the following three years, via 2029, increasing its portfolio of carbon removing tasks because the tech large scales up AI and cloud operations.
The undertaking will flip cotton crop waste, which is usually burned after harvest, into biochar — a charcoal-like materials that may be added to soil, storing carbon for lengthy intervals whereas additionally serving to scale back air air pollution from open-field burning. It should initially concentrate on the western Indian state of Maharashtra and contain round 40,000–45,000 smallholder farmers.
The settlement comes as massive companies, together with Microsoft, ramp up spending on carbon removing — tasks designed to bodily take away carbon dioxide from the air. The Redmond-based software program maker is working towards its purpose of turning into carbon-negative by 2030. Nevertheless, Microsoft’s whole greenhouse gasoline emissions rose 23.4% in fiscal yr 2024 from a 2020 baseline, primarily pushed by value-chain emissions linked to its rising cloud and AI enterprise. Microsoft has not but reported on its carbon progress for 2025.
With the fast growth of AI operations, power use and emissions are rising, pushing corporations to look past the U.S. for carbon removing tasks that may take carbon dioxide out of the ambiance. India has more and more emerged as a beautiful marketplace for such tasks due to its massive volumes of agricultural waste and the dimensions of its farming financial system.
Varaha will develop 18 industrial reactors that may function for 15 years, with a complete projected removing quantity exceeding 2 million tons of carbon dioxide over the undertaking’s lifetime, the businesses mentioned in an announcement on Thursday.
One of many greatest gaps in carbon removing markets is not only putting in gear to supply biochar, however operating tasks reliably and navigating a stringent course of to problem credit. Varaha’s means to ship credit at scale helped it emerge because the world’s second-largest participant in sturdy carbon deliveries and drew Microsoft’s consideration, co-founder and CEO Madhur Jain mentioned in an interview.
Microsoft’s necessities for digital monitoring, reporting, and verification meant Varaha needed to construct bespoke methods in-house, Jain instructed TechCrunch, including that working with tens of hundreds of smallholder farmers in India makes monitoring and logistics way more advanced than biochar tasks within the U.S. or Europe that depend on biomass concentrated at a single industrial web site.
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“Greater than 30% of our crew has labored in agriculture,” Jain mentioned, including that the expertise has helped Varaha design methods that work on the bottom with farmers.
The undertaking’s first reactor will likely be positioned subsequent to Varaha’s 52-acre cotton analysis farm in Maharashtra, the place the startup works with farmers to check practices equivalent to making use of biochar to soil underneath real-world situations. The startup plans to scale as much as 18 reactors throughout India’s cotton-growing belt underneath Microsoft’s dedication.
Varaha has quickly scaled its biochar operations over the previous yr, Jain mentioned. In 2025, it processed about 240,000 tons of biomass, producing roughly 55,000–56,000 tons of biochar and producing round 115,000 credit, up from round 15,000–18,000 a yr earlier, he added.
The startup expects volumes to rise additional as new contracts kick in, with Jain saying it goals to a minimum of double its 2025 throughput in 2026 to round half 1,000,000 tons of biomass and near 250,000 tons of carbon sequestered.
At present, Varaha has 20 tasks in whole throughout India, Nepal, and Bangladesh — 14 in superior phases and one other six in early phases — spanning regenerative agriculture, biochar, agroforestry, and enhanced rock weathering and works with round 150,000 farmers. These tasks have the potential to sequester about 1 billion tons of carbon dioxide over lifetimes starting from 15 to 40 years, Jain mentioned.
Past carbon credit, the most recent undertaking goals to scale back open burning of cotton stalks, which contributes to seasonal air air pollution in components of India, whereas returning biochar to farms to enhance soil well being and scale back dependence on chemical fertilizers.
“This offtake settlement broadens the variety of Microsoft’s carbon removing portfolio with Varaha’s biochar undertaking design that’s each scalable and sturdy,” mentioned Phil Goodman, Microsoft’s CDR program director, in a ready assertion.
Whereas the Varaha deal highlights Microsoft’s push to diversify its carbon removing portfolio, the volumes stay small in contrast with its general footprint, because the software program large reported (PDF) whole greenhouse gasoline emissions of 15.5 million metric tons of carbon dioxide equal in FY2024.
Microsoft contracted for about 22 million metric tons of carbon removals in FY2024 as a part of its carbon-negative technique. In current months, Microsoft has signed a string of huge carbon removing agreements. These embody backing AtmosClear’s Louisiana undertaking to take away 6.75 million metric tons of carbon dioxide over 15 years, and agreeing to purchase 3.6 million carbon removing credit from a biofuels plant in Louisiana owned by C2X.
Like Microsoft, Google has additionally been signing carbon removing offers because the fast AI developments push up power use and emissions. Google agreed to purchase 100,000 tons of carbon removing credit from Varaha in January 2025, as its largest biochar deal.
Since its inception in 2022, Varaha has raised round $50 million throughout completely different devices. The startup counts RTP World, Omnivore, Orios Enterprise Companions, IMC Pan Asia Alliance Group’s Octave Wellbeing Economic system Fund, and Japan’s Norinchukin Financial institution amongst its backers. In November, Mirova — a French climate-focused funding agency backed by Kering and different company traders — invested $30.5 million in Varaha to increase its regenerative farming program.
