Trustworthy credits, backed by science and engineering.Rainbow issues high-integrity credits from rigorously assessed carbon removal projects.Explore credits
Credits that reflect both methodology and reality.Scientific integrityAll credits are a guaranteed tonne of carbon removal or avoidance, based on primary field data, verified through public models, and compliant with ISO 14064-2.Field engineering expertiseOur engineers bring extensive field experience. They understand and assess projects with a practical, grounded perspective of how things truly work.Verification and transparencyAll projects are monitored year-round and audited annually by independent experts. Verified data is collected and accessible through our platform.Credits that meet the market's highest standards.ICROA-endorsed, ICVCM-approved, and ISO-aligned.Buyers want credits that reflect operational reality, not theory. Our engineering team assesses projects in operating environments—actual pyrolysis temperatures, real soil application rates, and measured mineralization under field conditions. This means carbon removal claims reflect what's actually happening on-site, not what a model says should happen in theory.We issue durable carbon removal credits across biochar, bio-CCS, enhanced rock weathering, and mineralization pathways. We provide visibility into our upcoming project pipeline, enabling corporate buyers to align credits with specific geographies, value chains, and impact strategies.Maximise Environmental and Social Co-BenefitsBeyond carbon, Rainbow projects deliver measurable benefits across biodiversity, water, local employment, and more, aligned with UN Sustainable Development Goals.Co-benefits are verified, tracked, and communicated in our registry. 
No vague claims — just clear, auditable contributions to people and the planet.Access registryHear from our buyersWe’re proud to support Rainbow-certified projects, which align closely with both the geography of our operations and our broader sustainability strategy.Beyond their high integrity and carbon impact, Rainbow projects deliver measurable benefits aligned with the UN Sustainable Development Goals. These co-benefits are not just claimed — they are verified, tracked, and transparently communicated. No vague promises — just clear, auditable contributions to people and the planet.Laurence SauphanorChief Sustainability Officer, ECS GroupRegistryThe Rainbow registry is a public ledger for carbon credits issued under the Rainbow Standard. It ensures full transparency on certified projects and credits, tracks carbon credits throughout their lifecycle, and connects projects with resellers to facilitate transactionsGo to registry