Exploring Initial CO2 Transport Topologies for Germany's Carbon Management
This study combines graph-theoretic topology generation with a sector-coupled energy system model to evaluate 60 candidate CO2 transport networks for Germany in 2035. The analysis shows that establishing a domestic CO2 pipeline network reduces annual consumer costs by approximately 22 billion Euros compared to a no-pipeline scenario. The model reveals that a short 500 km pipeline connecting the industrial North Rhine-Westphalia region to Dutch sinks captures the majority of the economic benefits compared to a longer 1500 km network.
Why it matters — It demonstrates that the economic value of carbon transport infrastructure is concentrated in connecting major industrial source regions to international sinks, meaning planners can achieve most of the cost savings with a minimal 500 km footprint that avoids long-term infrastructure lock-in.
Caveat: The findings are based on a sector-coupled energy system model projecting to the year 2035, meaning the cost-benefit calculations depend heavily on the model's underlying assumptions about future industrial emissions and international sink availability.