The Soil Ledger: Why Alt Carbon's $12M Bet on Enhanced Rock Weathering is the New Carbon Front

TL;DR: Beyond Solar & EVs

Climate tech in India mostly means solar panels and electric vehicles. Alt Carbon is doing something different: enhanced rock weathering, which involves spreading crushed basalt on farmland to trap CO₂ permanently in the soil while improving crop yields.

Why Does Basalt-Based Carbon Capture Work?

Alt Carbon's process involves spreading crushed basalt, which chemically reacts with CO₂ and water, turning the carbon into stable bicarbonates. This doesn't just trap the carbon; it enriches the soil with minerals, creating an immediate ROI for the farmer through increased yields.

Can Alt Carbon Scale Across Indian Farmland?

Having raised $12 million in seed funding, Alt Carbon is already operating across eastern India. They sell the resulting carbon removal credits internationally, creating a business model where the "product" is the absence of carbon, and the "partners" are thousands of smallholder farmers.

Vichaarak Perspective: The Discrimination of Real Value

The Unreal in carbon capture is often "avoidance credits"—where we pay someone NOT to cut a tree. The Real is removal. Alt Carbon’s technology creates a permanent, mineralized record of carbon removal. As a seeker of truth, I find this far more robust than the ephemeral promises of typical carbon offsets.

E-E-A-T+ Analysis: Scaling Data and Soil

At Google, we think in terms of immutable logs and distributed systems. Alt Carbon is effectively building a "distributed ledger" of carbon in the soil of eastern India. From my perspective as an engineer, this kind of hard, physical verification is exactly what the climate market needs. Learn more about my focus at harkirat1892.

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