Life Cycle Assessment of Substitute Natural Gas production from biomass and electrolytic hydrogen

The synthesis of a Substitute Natural Gas (SNG) that is compatible with the gas grid composition requirements by using surplus electricity from renewable energy sources looks favourable solution to store large quantities and decarbonise network while maintaining same infrastructure. most promising layouts for SNG production conditions under which reduces environmental impacts if compared its fossil alternative still largely untapped. In this work, six different biomass fluctuating are point view means Life Cycle Assessment (LCA) methodology. Global Warming Potential (GWP), Cumulative Energy Demand (CED) Acidification (AP) selected as impact indicators analysis. influence key LCA methodological aspects on conclusions also explored. particular, two functional units chosen: 1 kg produced MJ output (SNG electricity). Furthermore, approaches dealing co-production applied. results show layout based hydrogasification has lowest all considered cases apart GWP CED mass unit avoided burden approach. Finally, selection multifunctionality approach found have significant technology ranking.