Work has begun on a £300m energy plant which will store surplus electricity from wind and solar farms in the form of liquid air.
The energy stored at the site, which is expected to be operational by 2028, will then be put back into the grid at times of high demand. Energy compressed into air, liquified and then cryogenically frozen can be held at the plant for several weeks, which is longer than battery storage.The technology has been developed by Highview Power over a number of years with financial support from the government and other energy firms.
Mr Butland, who is also Highview Power's chief executive, said there were times when the UK grid had "lots of excess when there is no demand".
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