There are some startups that try to store energy by lifting or spinning concrete (see www.energiestro.fr). Also please note that in case France and Germany ele

There are some startups that try to store energy by lifting or spinning concrete (see www.energiestro.fr). Also please note that in case France and Germany electrical grids frie because of a solar storm, cooling down the reactors will be impossibe once the emergency power generators run out of fuel.