Electricity storage techniques or technology. ZDF heute journal reports that a new storage method is being tested near Stuttgart: excess electricity produced by solar and wind power is converted to methane which can be stored in a natural gas network. When insufficient “renewable” electricity is generated, the stored methane is converted back to electricity.
I found an article explaining that they are using electrolysis to split water into hydrogen and oxygen and then chemically reacting the hydrogen with carbon dioxide to make methane.
(SHTROME shpy chher TECHH neek.)