I've hear, in France air energy has wide adoption, even few decades ago, before electricity, exists compressed air ring in Paris. In Germany still exists lot o

I've hear, in France air energy has wide adoption, even few decades ago, before electricity, exists compressed air ring in Paris. In Germany still exists lot of recognizable buildings, where stored methane. Some of them converted to culture/arts centers, because their specific design, not suitable for living or work (large cylinders).