| Popis: |
This chapter is about the potential production volumes of sustainably produced, bio-based methane (CH4) from anaerobic digestion, and synthetic natural gas. It refers to power-to-gas processes. Though based on the ground reality in Austria, the insights and learnings are useful for other countries too. The chapter starts with a characterization of available bioresources for anaerobic digestion, which is used as a basis for estimating the total theoretical potential of biogenic CH4 for the heating sector. Furthermore, the potential of synthetic natural gas in Austria has been estimated based on a projected increase of power generation. Wind and photovoltaics are used for producing H2 through the process of electrolysis. Another system component for H2 methanation is CO2 from biogas purification. The overall aim is to show how, and at what costs, renewable gases based on renewable resources can contribute to an energy supply for the heating sector. |
