Microsoft taps India’s Varaha for durable carbon removal offtake

Microsoft has signed a woody with Indian startup Varaha to bargain much than 100,000 tons of c dioxide removal credits implicit the adjacent 3 years, done 2029, expanding its portfolio of c removal projects arsenic the tech elephantine scales up AI and unreality operations.

The task volition crook fabric harvest waste, which is often burned aft harvest, into biochar — a charcoal-like worldly that tin beryllium added to soil, storing c for agelong periods portion besides helping trim aerial contamination from open-field burning. It volition initially absorption connected the occidental Indian authorities of Maharashtra and impact astir 40,000–45,000 smallholder farmers.

The statement comes arsenic ample corporations, including Microsoft, ramp up spending connected c removal — projects designed to physically region c dioxide from the air. The Redmond-based bundle shaper is moving toward its extremity of becoming carbon-negative by 2030. However, Microsoft’s total greenhouse state emissions roseate 23.4% successful fiscal twelvemonth 2024 from a 2020 baseline, chiefly driven by value-chain emissions linked to its increasing unreality and AI business. Microsoft has not yet reported connected its c advancement for 2025.

With the accelerated enlargement of AI operations, vigor usage and emissions are rising, pushing companies to look beyond the U.S. for c removal projects that tin instrumentality c dioxide retired of the atmosphere. India has progressively emerged arsenic an charismatic marketplace for specified projects due to the fact that of its ample volumes of cultivation discarded and the standard of its farming economy.

Varaha volition make 18 concern reactors that volition run for 15 years, with a full projected removal measurement exceeding 2 cardinal tons of c dioxide implicit the project’s lifetime, the companies said successful a connection connected Thursday.

One of the biggest gaps successful c removal markets is not conscionable installing instrumentality to nutrient biochar, but moving projects reliably and navigating a stringent process to contented credits. Varaha’s quality to present credits astatine standard helped it look arsenic the world’s second-largest subordinate successful durable c deliveries and drew Microsoft’s attention, co-founder and CEO Madhur Jain said successful an interview.

A Farmer spreading Biochar successful their workplace to heighten ungraded qualityImage Credits:Varaha

Microsoft’s requirements for integer monitoring, reporting, and verification meant Varaha had to physique bespoke systems in-house, Jain told TechCrunch, adding that moving with tens of thousands of smallholder farmers successful India makes tracking and logistics acold much analyzable than biochar projects successful the U.S. oregon Europe that trust connected biomass concentrated astatine a azygous concern site.

“More than 30% of our squad has worked successful agriculture,” Jain said, adding that the acquisition has helped Varaha plan systems that enactment connected the crushed with farmers.

The project’s archetypal reactor volition beryllium located adjacent to Varaha’s 52-acre fabric probe workplace successful Maharashtra, wherever the startup works with farmers to trial practices specified arsenic applying biochar to ungraded nether real-world conditions. The startup plans to standard up to 18 reactors crossed India’s cotton-growing loop nether Microsoft’s commitment.

Varaha has rapidly scaled its biochar operations implicit the past year, Jain said. In 2025, it processed astir 240,000 tons of biomass, producing astir 55,000–56,000 tons of biochar and generating astir 115,000 credits, up from astir 15,000–18,000 a twelvemonth earlier, helium added.

The startup expects volumes to emergence further arsenic caller contracts footwear in, with Jain saying it aims to astatine slightest treble its 2025 throughput successful 2026 to astir fractional a cardinal tons of biomass and adjacent to 250,000 tons of c sequestered.

Currently, Varaha has 20 projects successful full crossed India, Nepal, and Bangladesh — 14 successful precocious stages and different six successful aboriginal stages — spanning regenerative agriculture, biochar, agroforestry, and enhanced stone weathering and works with astir 150,000 farmers. These projects person the imaginable to sequester astir 1 cardinal tons of c dioxide implicit lifetimes ranging from 15 to 40 years, Jain said.

A Gassifer to person biomass into biocharImage Credits:Varaha

Beyond c credits, the latest task aims to trim unfastened burning of fabric stalks, which contributes to seasonal aerial contamination successful parts of India, portion returning biochar to farms to amended ungraded wellness and trim dependence connected chemic fertilizers.

“This offtake statement broadens the diverseness of Microsoft’s c removal portfolio with Varaha’s biochar task plan that is some scalable and durable,” said Phil Goodman, Microsoft’s CDR programme director, successful a prepared statement.

While the Varaha woody highlights Microsoft’s propulsion to diversify its c removal portfolio, the volumes stay tiny compared with its wide footprint, arsenic the bundle elephantine reported (PDF) full greenhouse state emissions of 15.5 cardinal metric tons of c dioxide equivalent successful FY2024.

Microsoft contracted for about 22 cardinal metric tons of c removals successful FY2024 arsenic portion of its carbon-negative strategy. In caller months, Microsoft has signed a drawstring of ample c removal agreements. These see backing AtmosClear’s Louisiana project to region 6.75 cardinal metric tons of c dioxide implicit 15 years, and agreeing to bargain 3.6 cardinal c removal credits from a biofuels works successful Louisiana owned by C2X.

Like Microsoft, Google has besides been signing c removal deals arsenic the accelerated AI advancements propulsion up vigor usage and emissions. Google agreed to bargain 100,000 tons of c removal credits from Varaha successful January 2025, arsenic its largest biochar deal.

Since its inception successful 2022, Varaha has raised astir $50 cardinal crossed antithetic instruments. The startup counts RTP Global, Omnivore, Orios Venture Partners, IMC Pan Asia Alliance Group’s Octave Wellbeing Economy Fund, and Japan’s Norinchukin Bank among its backers. In November, Mirova — a French climate-focused concern steadfast backed by Kering and different firm investors — invested $30.5 million successful Varaha to grow its regenerative farming program.