This article is a couple of weeks old, but interesting stuff.

The first results of UK Power Networks’ Park and Flex Study have revealed the enormous potential of using long-stay car parks, such as those at airports, to help power the grid.

Early research in the study has found that more than 1.3 million homes could be powered by filling up electric vehicle’s batteries in long-stay car parks when energy is cheap and demand is low - and returning that power back to the system during peak times.

The study used advanced modelling alongside both UK Power Networks’ and energy specialist Baringa’s forecasts for the number of electric vehicles on Britain’s roads in the coming years.

With airport parking, details of a customer’s flight dates can dictate the exact length of a vehicle's stay which gives the network operators greater insight into spare power or capacity.