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%.
IMechE is holding a conference today to discuss new ideas on how using "cryo-power" can benefit the low-carbon economy. The technology was originally developed by Peter Dearman, a garage inventor in Hertfordshire, to power vehicles.
A new firm, Highview Power Storage, was created to transfer Mr Dearman's technology to a system that can store energy to be used on the power grid.