100% renewable targets will require power storage to manage flows on the net
Electrolysers utilise these intermittent power flows to produce H2 gas from water
H2 gas can be stored in large quantities underground and transported via existing gas pipelines
H2 vehicles recharge faster and are more durable than battery powered transport
Growing H2 demand in industrial processes will reduce costs and increase supply

The  Deutsche Verein des Gas- und Wasserfaches (DVGW) published an updated map of the 11 completed 35 operational and 16 planned power to gas plants. The current 35 operational plants have a total of 30MW installed  capacity while the 16 planned are totalling 273 MW of which two plants will be 100MW and 1/3 bigger than 5MW