Chapter 01 · Climate & transitionEnergy & Transition
Bioenergy with Carbon Capture and Storage (BECCS)
Definition
A carbon dioxide removal (CDR) route that couples bioenergy production with carbon capture and storage: biomass absorbs CO₂ from the atmosphere as it grows; when it is converted to heat, power or fuels, the resulting biogenic CO₂ is captured and permanently stored underground rather than re-released. Because the carbon originated in the atmosphere, the chain can deliver net-negative emissions — unlike CCS on fossil fuels, which only avoids adding carbon.
References
Negative-emissions mechanism (biogenic vs fossil CO₂ capture); energy co-benefit; Denmark/Sweden frontrunners; geological storage timescales vs land-based CDR.
Stockholm Exergi case (800 kt/yr, EIB/Innovation Fund, Microsoft certificates); EU 2040 modelling (33 Mt BECCS); RED sustainability constraints; EU ETS non-recognition of removals.
Overview
What it means
BECCS features prominently in 1. 5°C and 2°C scenarios because it produces dispatchable energy while removing carbon — a combination other CDR methods (which consume energy) lack.
Current deployment is small: roughly 2 Mt of CO₂ removal per year (IEA), though frontrunner projects such as Stockholm Exergi's BECCS plant (up to 800,000 t/yr, financed with EU Innovation Fund and EIB support, selling removal certificates to buyers including Microsoft) signal scale-up. Denmark and Sweden lead on policy, Denmark having contracted about 0. 6 Mt/yr of capture from 2026.
How it is used
Applications attach capture to existing biogenic point sources — biomass power plants, pulp and paper mills, bioethanol fermentation (cheap, pure CO₂), and waste-to-energy. Constraints are biomass sustainability (land use, cascading-use rules, GHG-saving thresholds under frameworks like the EU RED) and the absence, so far, of removals in compliance markets such as the EU ETS.
Why it matters
Scenario arithmetic gives BECCS a large mid-century role; its real-world record is a handful of projects. Whether it becomes a climate tool or a modelling crutch depends on sustainable biomass supply and credible removal accounting — a live regulatory frontier (EU CRCF).