Gas definitions for the European Union: setting thresholds to reduce life-cycle greenhouse gas emissions

To achieve GHG reductions from the use of renewable and low-carbon gases, it is necessary to define the gases based on their life-cycle well-to-wheel emissions. There can be large variations in the GHG intensity of gases, even within the same production pathway, and uncertainties in some parameters used to calculate emissions could mean that some gases classified as renewable or low carbon fail to provide GHG reductions as intended. Clear definitions of renewable gas and low-carbon gas that are consistent among EU policies are needed to support the gas pathways that achieve deep decarbonisation of the sector.