Leighton Buzzard electricity facility tests 'largest battery'
Scientists have built the biggest battery of its kind in Europe, to see if it can store power locally, rather than rely on the national grid.
It is a first for the UK, and could save hundreds of millions of pounds and cut the cost of electricity bills.
The facility, which is the size of three tennis courts, has been switched on in Bedfordshire, ahead of a two-year trial.
Neil Bradford reports.