The company believes the system has the potential to solve the problem of storing surplus power generated by future large-scale renewable energy sources.

The 300kW pilot project is based at utility SSE’s 80MW biomass plant in Slough, southern England.

It cryogenically cools air to minus 196ºC – a concept already applied in liquid natural gas (LNG) transport – and stores it as a liquid in an insulated tank at atmospheric pressure.

When