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§ Private Profile · Bengaluru, India
Climate technology company using enhanced rock weathering for CO2 removal, generating carbon credits, and improving soil health in agriculture.
Alt Carbon has raised $12.6M across 2 funding rounds.
Key people at Alt Carbon.
Alt Carbon was founded in 2023 by Sparsh (Founder).
Alt Carbon has raised $12.6M in total across 2 funding rounds.
Based in Darjeeling, India, Alt Carbon is a climate technology company that develops enhanced rock weathering solutions to remove atmospheric carbon dioxide by applying silicate-rich rock dust to agricultural land. The organization generates revenue by selling verified carbon removal credits to corporate buyers, targeting the removal of 5 million metric tons of carbon dioxide across 500,000 hectares by 2030. To support this growth, the enterprise has secured over $12.5 million in total funding, including a recent $12 million seed round to scale its operations across South Asian tea, rice, and bamboo farms. Alt Carbon is backed by investors such as Lachy Groom and Shastra VC, and has established strategic partnerships and offtake agreements with corporate clients including Mitsubishi Corporation and MOL Group. The company was founded in 2023 by Shrey Agarwal, Sparsh Agarwal, and Syed Safwan.
Key people at Alt Carbon.
Alt Carbon has raised $12.6M across 2 funding rounds. Most recently, it raised $12.0M Seed in May 2025.
| Date | Round | Lead Investors | Other Investors | Status |
|---|---|---|---|---|
| May 1, 2025 | $12M Seed | Lachy Groom | AngelList, Lakestar, LGF, Longtail Ventures, Awais Ahmed, Jason Zhao, Amrendra Singh | Announced |
| Dec 1, 2023 | $550K Seed | — | AngelList, Armory Square Ventures, Monta Vista Capital, Nokia Growth Partners, Anirudh Singla, Ashis Nayak, Avijeet Alagathi, Awais Ahmed, Chaarvi Badani, Gaurav Mandlecha, Jivesh Madan, Jivraj Singh Sachar, Mihir JHA, Rahul Sethuram, Ravish Ratnam, Utsav Somani, Vasant RAO, Venus Dhuria, Indian Silicon Valley, Pointone Capital, Veda VC | Announced |
Alt Carbon is a deeptech climate tech startup founded in 2023, focused on building agricultural infrastructure for carbon dioxide removal (CDR) in South Asia, primarily through Enhanced Rock Weathering (ERW).[1][2] The company develops technology to trap CO₂ in rocks and soil, improving soil health and crop yields while targeting the removal of 5 million metric tons of CO₂ by 2030; its flagship Darjeeling Revival Project (DRP) revives degraded soils, restores ecosystems, and supports livelihoods in tea plantations.[1][2] It serves farmers, agriculturists, landowners, and corporate buyers of carbon credits, solving the global challenge of durable CDR from the Global South by partnering with scientists and communities to convert underutilized land into carbon sinks.[1][2]
In December 2024 (relative to early 2026), Alt Carbon raised $12 million to expand R&D in earth sciences, hardware innovations, and operations, following partnerships like a strategic alliance with Mitsubishi Corporation and a 10,000-tonne CDR offtake with MOL Group, signaling strong early growth momentum.[2]
Alt Carbon was founded in 2023 by brothers Shrey Agarwal (Co-founder & CEO, with a background in Chemistry and Mechanical Engineering from BITS Pilani) and Sparsh Agarwal (Co-founder & President, holding a degree in International Climate Law from the University of Oxford).[1][2] The idea emerged from their shared vision to position India and South Asia as a CDR hub, leveraging ERW to address climate change while revitalizing agriculture in the Global South.[1][2]
Key early traction includes launching the Darjeeling Revival Project (DRP) to restore tea ecosystems, building a world-class lab with proprietary models in just 18 months, and securing high-profile partnerships and funding, marking pivotal moments that validated their ambitious approach.[1][2]
Alt Carbon rides the surging demand for gigaton-scale CDR to meet net-zero goals, capitalizing on ERW as a nature-based, low-cost solution amid tightening carbon markets and corporate offtake needs.[2] Timing is ideal post-COP commitments, with Global South agriculture vulnerable to climate change yet rich in scalable land for carbon sinks—market forces like rising credit prices and policy support (e.g., India's green initiatives) favor rapid deployment.[1][2]
The company influences the ecosystem by pioneering "climate action from the Global South," proving deeptech can restore livelihoods alongside removal, potentially inspiring replicated models in emerging markets and reshaping CDR as an agri-infrastructure play.[1][2]
Alt Carbon's trajectory points to aggressive scaling of DRP and ERW across South Asia, with $12M fueling lab expansions, hardware, and offtake deals to hit multi-million-tonne removals en route to 2030 goals.[2] Trends like AI-optimized verification, blended finance for Global South projects, and ERW commoditization will accelerate growth, evolving its role from startup to category leader in durable CDR.[1][2] As a "once-in-a-generation" bet per investors, expect Alt Carbon to redefine climate tech by proving high-integrity removal at gigaton potential—turning South Asia's soils into the planet's carbon vaults.[2]
Alt Carbon was founded in 2023 by Sparsh (Founder).
Alt Carbon has raised $12.6M in total across 2 funding rounds.
Alt Carbon's investors include Lachy Groom, AngelList, Lakestar, LGF, Longtail Ventures, Awais Ahmed, Jason Zhao, Amrendra Singh, Armory Square Ventures, Monta Vista Capital, Nokia Growth Partners, Anirudh Singla.