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Anaerobic digestion and CO2 separation with CCUS (biomethane)


Technology Description

Similar to biomethane production from anaerobic digestion, with the addition of a CO2 capture and compression unit integrated into the CO2 separation inherent to biogas upgrading. If the CO2 is stored, negative emissions are created that can offset hard-to-abate emissions elsewhere in the energy system. Larger digestors (> 5 MW) are suitable for carbon capture and storage (CCS) to justify the additional capital expense. See non-CCUS variant for more detail.

Relevance for Net Zero

Alternative methods for biomethane production exist (e.g. biomass gasification and methanation), and the future demand for biomethane is limited.

Key Countries


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