In the recently published report titled Direct Storage of Biomass: Assessing the Carbon Removal Opportunity, the Direct Storage of Biomass Coalition outlines how utilizing photosynthesis can help durably sequester atmospheric carbon dioxide. The consensus among the scientific community indicates that alongside deep reductions in greenhouse gas emissions, removing hundreds of millions of tons of carbon dioxide annually is critical to fulfilling global climate targets. Every year, massive amounts of waste organic matter from agricultural activities, forest management, and land development are left to rot or are intentionally burned. This release of carbon can be prevented by intercepting this unmarketable material and placing it into long-term storage environments. Unlike other complex technological pathways, this approach leaves the gathered materials in their raw state rather than using intensive heat treatments to transform them into secondary oils or char products.

The potential scale of this strategy is exceptionally vast, supported by extensive raw materials generated through existing industrial operations. For instance, the state of California alone generates seventy million tons of waste organic matter on an annual basis. When expanding this perspective across the entire United States, mature market scenarios suggest that available forestry residues could scale to provide between fifty-five million and one hundred fifteen million tons of carbon dioxide equivalent feedstockFeedstock refers to the raw organic material used to produce biochar. This can include a wide range of materials, such as wood chips, agricultural residues, and animal manure. More each year. This abundant material includes diseased trees, urban landscaping debris, paper, cardboard, crop husks, and stalks that would otherwise rapidly decay and re-emit greenhouse gases into the air. Prioritizing materials that have an immediate negative impact on the atmosphere ensures true additionality, creating an effective climate asset out of a traditional economic liability.

The primary environmental risk associated with keeping raw organic material buried away from the atmosphere involves the potential formation of methane gas. If anaerobic microbes survive inside the storage sites, they can decompose the organic matter into methane, a greenhouse gas that exhibits twenty-seven times the global warming potential of carbon dioxide over a century. To neutralize this issue, project developers utilize advanced engineering solutions centered on biological suppression and strict gas containment. Biological suppression involves adjusting the moisture levels, acidity, or temperature within the storage environment to halt microbial functions completely. Gas containment utilizes impermeable subterranean rock layers or engineered clay barriers to trap any minor gas generated, forcing it to pass through specialized soil oxidation zones where natural bacteria safely convert the methane back into water and carbon dioxide before it escapes.

Implementing this carbon removal strategy is simplified because it seamlessly integrates with long-standing land, waste, and forest management systems. Project developers can directly utilize existing industrial harvesting equipment, regional trucking fleets, and established log yards, eliminating the need for massive upfront capital investments in entirely new infrastructure. Furthermore, once subsurface storage sites are completely filled and properly sealed, the land above can be returned to its original agricultural or ecological use, minimizing long-term land impacts. To fully unleash this potential, decision-makers should adopt performance-based climate policies that judge all removal pathways equally by their durability and ecological co-benefits. Integrating these strategies into federal conservation programs and international compliance credit markets will establish secure financing, generate stable rural jobs, and accelerate the commercial deployment needed to achieve net-zero goals.

Source: Direct Storage of Biomass Coalition. (2026). Direct storage of biomass: Assessing the carbon removal opportunity. Carbon Business Council.