Low-carbon methane, or synthetic natural gas (SNG), is produced by combining captured CO₂ with low-carbon hydrogen through methanation processes such as the Sabatier reaction. It can also be produced from a syngas generally compounded of CO₂, CO and hydrogen which can for example be produced by biomass gaseification.
Fully compatible with existing gas infrastructure, it can be injected into networks or used directly in industrial and energy applications.