To implement green natural gas in the Dutch energy infrastructure a phased approach is suggested. On the short term is started with the route of upgraded biogas produced by biological digestion of biomass materials like manure. The technology is available and can already be commercially applied in small-scale projects utilising locally available biomass.

The main source of green natural gas on the long term, however, will be synthetic natural gas (SNG) that is produced via gasification of biomass and subsequent methanation of the product gas. In contrast to digestion requiring specific wet feedstocks, essentially all biomass materials are suitable as feedstock for gasification and the SNG route.