Bio-oil geological storage projects are a carbon-removal project type within the engineered & geological segment of the carbon market. They involve biomass converted to bio-oil and stored in geological formations for long-term sequestration. In practice, atmospheric carbon fixed by biomass is isolated in a durable geologic storage environment. Common project configurations include Pyrolysis oil or related biogenic oil streams stored in suitable geologic formations.

The conversion step makes yield and carbon-content measurements especially important because they determine how much carbon is actually stored. This segment is generally aimed at more durable carbon storage and is often attractive to buyers seeking high permanence, but lifecycle emissions, measurement precision, and storage durability remain the decisive quality questions. For buyers and program designers, the most important diligence questions are: Are conversion yields and carbon content measured well? Is the geologic storage pathway secure? Are feedstock sustainability and process emissions addressed?