Bioenergy-CCS Combo Could Erase 780 Gt CO₂ and Salvage Young Coal Plants, Review Finds

The most direct route to carbon-negative electricity may lie in smokestacks we have already built. A sweeping review published Aug. 11 in the Journal of Bioresources and Bioproducts argues that retrofitting relatively young coal plants to cofire biomass and capture up to 99% of resulting CO2 could eliminate 1.6 billion metric tons of emissions annually by 2040, sparing nations the economic shock of early coal retirements.

Drawing on the latest Intergovernmental Panel on Climate Change scenarios, the study calculates that bioenergy with carbon capture and storage (BECCS) could deliver between 30 and 780 gigatonnes of cumulative CO2 removal this century—enough, at the high end, to offset more than two decades of current global energy emissions. Unlike emerging direct-air-capture machines, BECCS generates dispatchable power while it cleans the atmosphere, providing the firm capacity that weather-dependent renewables still struggle to guarantee.

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The review identifies three pivotal niches for BECCS: deep decarbonisation of power and heavy industry, life-extension of “locked-in” coal fleets, and flexible, negative-emission backup for grids dominated by wind and solar. Case studies from China show that less-than-15-year-old coal units, if converted to 50% biomass co-firing and fitted with advanced CCS, could slash national power-sector emissions 41 gigatonnes cumulatively between 2050 and 2060.

Yet scale is not destiny. The paper warns that poorly planned BECCS could compete with food crops, strain freshwater supplies and erode biodiversity. To avert these trade-offs, it proposes a five-point playbook:

• map local biomass and CO2-storage capacity before projects are approved
  
• embed life-cycle carbon, water and land-use metrics into permitting
  
• accelerate R&D on 95–99% capture systems
  
• guarantee long-term carbon-pricing or sequestration credits
  
• launch sustained public engagement campaigns in fossil-dependent regions

If these safeguards are adopted, BECCS could evolve from a marginal carbon-removal option into a cornerstone of a just energy transition—one that keeps the lights on, preserves industrial jobs and pulls the world back from the brink of 1.5 °C.