A British company, Highview Power, proposed an energy storage solution that uses renewable electricity from solar or wind, to freeze air into a liquid state, where it can be kept in insulated storage tanks for hours or even weeks.
The frozen air is allowed to warm and turn itself back into a gas. It expands so quickly that its power can spin a turbine for an electric generator. The resulting electricity is fed into transmission lines as needed.
The technology is ideal for converting abandoned coal-fired power plants into energy storage facilities that are on a par with the largest grid energy storage projects.
Old power stations are well-suited for this task because they still have the transmission lines connecting them to the regional power grid.
What do you think of the idea to store energy in liquid frozen air? Please let us know in the comments below.