Liquid air ‘offers energy storage hope’

By Roger Harrabin
Environment analyst

Turning air into liquid may offer a solution to one of the great challenges in engineering – how to store energy.

The Institution of Mechanical Engineers says liquid air can compete with batteries and hydrogen to store excess energy generated from renewables.

IMechE says “wrong-time” electricity generated by wind farms at night can be used to chill air to a cryogenic state at a distant location.

When demand increases, the air can be warmed to drive a turbine.

Engineers say the process to produce “right-time” electricity can achieve an efficiency of up to 70%.

Read more: BBC News – Liquid air 'offers energy storage hope'.

Home           Top of page