Major energy supplier to give away free electricity from next month – but you need to sign up

A MAJOR energy supplier is giving away four days’ worth of free electricity to thousands of customers from next month.

The offer will be available to customers on four Sundays from May 18.

AlamyCustomers need to sign up before May 5 to take part in the scheme[/caption]

These will include May 18, May 25, June 1 and June 8.

The scheme is part of EDF’s Sunday Saver challenges, where customers can earn free electricity on Sundays by shifting the electricity they use during the week.