Theoretically, these are fantastic ideas for storing energy. Realistically, however, it is much more universal to run electrolysis. Many countries do not have mountains to build pumped storage facilities, and large-scale flywheels are difficult to implement. Battery farms are not sufficent. However, the transport of electrons or hydrogen is already working today. Natural gas networks are in place and can be used. At the moment, expansion is faltering at the European Union and national borders.

In the long term, everything will come down to hydrogen and electricity, and this hydrogen will have to be imported