The climate investment world often favors tech giants like sleek towers for directly capturing carbon from the air, giant warehouse-sized hydrogen electrolyzers, or hundreds of miles of carbon pipelines. These assets attract media attention., roadshows and big checkbooks. But the most compelling climate investment of this decade lies right under our feet: the carbon stored, locked up, and stabilized in agricultural and natural soils.. We are currently witnessing a rare moment where climate impact and attractive financial returns are coming together in one direction.

Huge scope of opportunity

The numbers regarding soil carbon are staggering. The top meter of global soils contains an estimated 1,500 to 2,400 billion tons of organic carbon, more than double what is in the atmosphere today and more than triple the carbon stored in all living vegetation combined.. The problem, and the opportunity, is that agricultural lands have lost an estimated 50 to 70 % of their original carbon stocks due to centuries of intensive agriculture. This loss creates a huge sequestration reservoir ready to be replenished.

The scientific evidence is clear: improved management of degraded agricultural land could store 1.5 to 5.5 billion tonnes of CO₂ equivalent per year, equivalent to 10 to 30 % of current global greenhouse gas emissions. To put that in perspective, the global aviation sector produces around 2.1 billion tonnes of CO₂ per year. Even with conservative estimates, carbon storage in the soil could fully offset aviation emissions, without the need to develop new technologies or fight for permits for industrial facilities..

Two types of carbon in soil: SOC and Biochar

It is extremely important for investors and project developers to understand that not all soil carbon is created equal.

Soil organic carbon (SOC) accumulates through plant residues and microbial activity, for example through cover crops or composting. However, its fundamental problem is its reversibility. In the event of drought, changes in practices or economic pressures, this carbon can quickly return to the atmosphere. Markets take this risk into account and organic carbon credits are therefore commonly traded at a price of only $15 to $50 per tonne of CO₂ equivalent.

On the other hand, it stands pyrogenic carbon in the soil, known as biochar, which represents a permanent and premium solution. It is produced by pyrolysis – heating agricultural waste or wood chips at high temperatures with low oxygen content. This carbon does not decompose, does not volatilize and is thermochemically stable in the soil for hundreds to over a thousand years. The durability of class 1 biochar (with a H:Corg ratio below 0.4) is even analytically measurable in the laboratory, so it does not require decades of monitoring like conventional SOC. Thanks to this stability, High-quality biochar carbon credits (CORCs) sell for $150 to $350 per ton, a 6- to 10-fold premium reflecting corporate demand for permanent and verifiable credits.

Dual economic engine: Agricultural benefits

In addition to credits, biochar-enriched soil generates a second economic engine – dramatically improving agricultural productivity. Key benefits include:

• Improving crop yields by 5 to 15 % in degraded soils with even small carbon recovery.
• Reducing fertilizer costs by 10 to 25 %, because biochar retains nutrients and supports microbial communities.
• Reducing irrigation costs by 10 to 20 % thanks to excellent water retention.
• Reduced dependence on synthetic fertilizers, which protects farmers from market shocks (such as the price spike in 2022).

For smallholder farmers in areas such as South Asia and sub-Saharan Africa, these savings and increased yields represent the line between marginal survival and true prosperity. The proceeds from carbon credits can then cover the initial costs of the transition, creating a fully self-sustaining economic cycle.

Regulatory pressures and growing demand

Voluntary carbon markets are now transforming into markets driven by structural regulatory demand. The EU Carbon Removal Certification Framework (CRCF) is building legal standards that add regulatory demand to the already existing voluntary one. The Science Based Targets Initiative (SBTi) now requires companies with net-zero commitments to offset their residual emissions exclusively through permanent carbon removal, massively accelerating demand for premium grade biochar. National agricultural policies in the EU, India, the US and Brazil are also increasingly integrating soil health into their subsidy structures. As a result, In 2023-2024 alone, buyers committed approximately $2 billion to biochar and soil carbon projects, with demand constantly outstripping supply.

Investment models and expert risk management

Capital currently uses three primary avenues: vertically integrated biochar operations (which diversify revenue across credits, products and energy), direct credit offtake agreements (forward purchases that reduce risk), and blended finance in emerging markets with the help of institutions such as the International Finance Corporation (IFC).

Every investment carries risks, but in this sector they are well defined and managed. The sustainability risk is minimal for high-quality biochar, while SOC is governed by insurance mechanisms and strict haircuts. Market price risks are protected by long-term purchase agreements and market imbalances that create a natural price floor. The most complex risk – measurement, reporting and verification (MRV) – requires specific technical solutions. This is where experts such as the founders of Greenloop Cleantech, Dr. Rachana Malviya and Rimika Kapoor, who specialize in MRV strategy, sustainability quantification and project architecture for carbon markets, play a key role.

Soil carbon is no longer waiting for its moment – it is here. The convergence of established science, functioning markets and strong agronomic benefits has created a premium asset class. Biochar now offers investors not only a demonstrable and measurable climate impact, but also long-term economic value with a structural market advantage and some of the best returns in the entire climate economy.