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Carbon Removal

01

Engrow was founded on a simple observation: the biomass-to-CDR ratio of conventional standalone  biochar production is deeply inefficient.

Standard pyrolysis operators recover biochar at a yield of roughly 30% of input biomass – and stop there. The remaining carbon, locked in the bio-oil fraction, is either combusted for energy or discarded, releasing it back to the atmosphere. For every tonne of biomass processed, that represents more than half the sequestration potential left on the table.

Engrow’s response is to develop a fully decentralized dual-sequestration pathway that captures both fractions. Where geological storage is not yet available, bio-oil is blended into bitumen for road construction, permanently sequestering carbon beneath road surfaces within 50 km of the production site. Where geological storage permits are secured, bio-oil is injected directly into depleted oil wells for deep, permanent storage. In both cases, nothing is wasted.

Engrow has already demonstrated the technical and methodological foundations for this approach through its certified project under the Rainbow Standard (RIV-2025-PROJ-146), which recognises 1,000-year permanence for its biochar and generates avoidance credits for bio-oil substituting furnace oil in industrial applications, validating both sequestration streams under independent third-party verification.
Engrow captures both fractions. Our process yields 30% biochar and 20% organic bio-oil from every tonne of input, and we sequester both permanently.                                         At current credit ratios:

  • 1 tonne of biochar: 1.6 to 2 removal credits
  • 1 tonne of bio-oil: 1.5 to 2 removal credits

Since our process co-produces more than 0.7 tonnes of bio-oil per tonne of biochar, we generate over 40% more CDR per tonne of biomass than biochar-only operators, from the same feedstock, the same reactor, the same process.

The only current comparable for bio-oil sequestration is Charm Industrial in the USA, which generates credits by injecting bio-oil into depleted oil wells — a pathway Engrow is actively pursuing in parallel. Once permits are obtained, Engrow will be the first operator outside the United States to deliver geological bio-oil storage credits at scale.