Microsoft Partners with Indian Startup Varaha for Carbon Removal Project
Microsoft has recently announced a significant deal with Indian startup Varaha to purchase over 100,000 tons of carbon dioxide removal credits over the next three years, expanding its efforts to combat climate change. This partnership will see Varaha converting cotton crop waste, typically burnt after harvest, into biochar – a substance that can store carbon in the soil for extended periods and help reduce air pollution caused by open-field burning. The project will initially focus on smallholder farmers in Maharashtra, India.
Focus on Carbon Removal
In line with its goal to become carbon-negative by 2030, Microsoft has been increasing its investments in carbon removal projects. The company’s greenhouse gas emissions rose in fiscal year 2024 due to the growth of its cloud and AI business, prompting a strategic shift towards carbon removal initiatives. This collaboration with Varaha marks a step forward in Microsoft’s commitment to sustainability.
Scaling Up Operations
As AI operations expand, the energy consumption and emissions associated with these technologies are on the rise. This trend has led companies like Microsoft to seek carbon removal projects outside the U.S., with India emerging as an attractive market due to its agricultural waste volumes and farming economy scale. Varaha’s project with Microsoft aims to deploy industrial reactors to remove over 2 million tons of carbon dioxide over 15 years.
Challenges and Solutions
One of the key challenges in the carbon removal market is not just creating biochar but also ensuring the reliability of projects and navigating the credit issuance process. Varaha’s expertise in delivering carbon credits at scale has positioned it as a significant player in the industry. The startup’s focus on building robust systems and working closely with farmers has been instrumental in its success.
Microsoft’s stringent requirements for monitoring and verification have pushed Varaha to develop custom solutions for tracking carbon removal activities. The project’s initial phase will involve setting up a reactor next to Varaha’s research farm in Maharashtra, with plans to expand across India’s cotton-growing regions under Microsoft’s partnership.
Future Growth and Impact
Varaha has seen rapid growth in its biochar operations, with plans to significantly increase its biomass processing and carbon sequestration volumes. The startup’s projects across India, Nepal, and Bangladesh have the potential to sequester large amounts of carbon dioxide over several decades, contributing to global climate efforts.

Aside from generating carbon credits, Varaha’s project aims to reduce air pollution from burning cotton stalks and enhance soil health through biochar application. Microsoft’s partnership with Varaha signifies a strategic move towards diversifying its carbon removal portfolio and addressing environmental challenges.
Continued Commitment to Sustainability
While the Varaha deal represents a step in the right direction for Microsoft, the company continues to explore new avenues for carbon removal. With a focus on reducing its overall carbon footprint, Microsoft has signed various agreements for carbon removal projects in recent years, demonstrating its ongoing dedication to environmental sustainability.
As the tech industry grapples with the environmental impact of rapid technological advancements, collaborations like the one between Microsoft and Varaha highlight the importance of innovative solutions in the fight against climate change. By leveraging biochar technology and sustainable farming practices, these companies are paving the way for a more sustainable future.
