Following my last post about technologies for storing electricity using thermodynamics, i’d like to introduce you to the Liquid Air Electrical Storage (LAES) concept.
Liquefied air is known since the 1900s, independently with the Claude process (giving birth to the company Air Liquide) and the Linde process (and its rival company Linde).
Liquefied air (at approx -190°C and rather low pressure) can store a big amount of energy that can be restored into electricity through revaporization and expansion to atmospheric pressure.
As of today, technology is considered mature and a 300 kWe pilot plant has been started by Highview power in the UK.
This technology is said to have a drawback with is to have a rather low electrical efficiency. I personally found it very interesting.
the web site of highview power with a nice virtual plant visit