The action, by industry regulator Ofgem, was because the French-owned firm failed to meet a three month connection deadline in more than 100 cases since 2006.

Ofgem’s managing director for corporate affairs, Sarah Harrison, said: “All energy companies should be in no doubt that if they are failing to offer good customer service Ofgem will take tough regulatory action.

“We recognise that EDF Energy has now taken steps to improve its connections service, but they should have taken this action some time ago.”

She added that the fine could have been bigger but it took into account that EDF had already paid about £450,000 in compensation to affected customers.

Luke Walsh

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