Boeing Purchases 20,000-Ton Diversified Biochar and ERW Carbon Removal Portfolio

Carbon removal marketplace Supercritical has announced a new agreement with Boeing for the purchase of 20,000 tons of durable carbon dioxide removal credits sourced from biochar and enhanced rock weathering projects across developing countries. The portfolio was selected from more than 200 projects assessed against a 118-point scientific framework covering additionality, permanence, measurability, and operational readiness.

The portfolio includes six suppliers across Brazil, Bolivia, Namibia, and India — specifically Exomad Green, Ground Up, InPlanet, NetZero, Varaha, and PlanBoo — spanning both biochar and enhanced rock weathering methodologies. Boeing will apply the carbon removal credits to address residual Scope 3 category 6 emissions associated with business travel, as part of its broader strategy to reduce and neutralise hard-to-abate emissions. The deal follows earlier Boeing agreements to purchase 80,000 tons of CDRs from Grassroots Carbon and Carbonfuture.

Boeing adopted an 'avoid first, remove second' carbon management strategy in 2024, prioritising emissions reductions at source while using high-quality removals for residual emissions. The inclusion of Indian supplier Varaha in the portfolio is notable, as it signals international buyer interest in India-based carbon removal projects and highlights the country's potential as a significant supplier of high-integrity nature-based and geochemical carbon credits. Boeing has voluntarily offset its Scope 1, 2, and business travel emissions since 2020.

Enhanced rock weathering and biochar are increasingly viewed as among the most scalable carbon removal approaches, supported by abundant feedstocks and co-benefits including improved soil health and agricultural productivity. The deal structure — starting from science-based criteria rather than pre-selected suppliers — represents a shift in how large corporate buyers are approaching carbon procurement, moving toward quality-first portfolio construction. This approach is expected to set a higher bar for project credibility in the voluntary carbon market.

Key figure — 20,000 tons of durable carbon dioxide removal across biochar and ERW projects