Manufacturing
A biomass to SNG efficiency of 70% can be achieved. costs are minimized by maximising production scale, and by locating plant next to transport links (e.g. a port or river) for the chosen source of biomass. The existing gas storage infrastructure would allow the plant to continue to manufacture gas at the full utilisation rate even during periods of weak demand, helping minimise manufacturing capital costs per unit of gas produced.
Renewable gas can be produced through three main processes; anaerobic digestion of organic (normally moist) material, thermal gasification of organic (normally dry) material and produced through the Sabatier reaction. In these cases the gas from primary production has to be upgraded in a secondary step to produce gas that is suitable for injection into the gas grid.
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