With a potential of 414 terawatt hours by 2050, a big share of Germany’s future gas demand could be covered by local green gas production. This is the result of a new Navigant study for the German Gas and Water Association (DVGW).
Navigant examined two successive steps for the future use of gas infrastructure: an immediate exchange of coal, oil and petroleum products with natural gas, as well as an exchange of natural gas with renewable gases by 2050.
Of the total potential, up to 250 TWh per year comes from the production of biogas, for example from anaerobic digestion of food waste, harvest residues, liquid manure or from the gasification of waste wood. Added to this are the estimated yields of energy and winter plants. The conversion of green electricity from photovoltaic and wind power plants into synthetic fuels such as hydrogen or methane (power-to-gas) offers another potential of 74 to 164 TWh, depending on the installed capacity of the renewable energy plants.
Navigant also quantified the potential greenhouse gas savings through the successive shift to green gas in the electricity, heat and transport sectors. The team also calculated which prioritization would have to be applied in allocating the available quantities of renewable gases across the sectors. The experts find that green gases in all sectors can save up to 83 million tons of CO2 per year.