Alt Carbon
Bengaluru-based carbon removal startup applying enhanced rock weathering across South Asia.
- Private company
- Bengaluru, KA, INIndia
Bengaluru-based carbon removal startup applying enhanced rock weathering across South Asia.
Which advantages over its rivals hold up, and why are they hard to copy?
Alt Carbon combines a proprietary basalt-organic soil amendment called Hari Maati with field labs, geochemical modeling, and machine-learning-driven MRV to verify carbon removal at lower cost than direct air capture.
Its roots in Darjeeling tea estates give it established farmer relationships, while partnerships with Isometric, IISc Bangalore, and Ashoka University strengthen scientific credibility and registry acceptance.
Is its category moving in its favor or against it?
Alt Carbon targets South Asia as a hub for durable carbon dioxide removal, scaling enhanced rock weathering across farmland in India and neighboring markets. Corporate demand is rising through buyer coalitions such as Frontier and NextGen, plus offtake agreements with Japanese shipping major MOL Group.
The voluntary carbon market for engineered removals has grown rapidly, and Alt Carbon plans to expand beyond carbon credits into Carbon Removal as a Service across South Asian agriculture.
What does the product do for its buyer, and how is it delivered?
Alt Carbon's core offering is enhanced rock weathering as a carbon removal service: it spreads waste basalt rock dust on agricultural soils, where rainwater converts dissolved CO₂ into stable bicarbonate ions stored for millennia.
The service is delivered through the Darjeeling Revival Project and the Bengal Renaissance Project, blending carbon credit generation with soil health improvement and livelihood restoration for farming communities.