How the energy giants got away with ripping us off: Average household could save £300 switching as Britain overpays by £1.7bn
![How the energy giants got away with ripping us off: Average household could save £300 switching as Britain overpays by £1.7bn](http://i.dailymail.co.uk/i/pix/2016/06/23/21/3599D35D00000578-0-image-m-5_1466714476629.jpg)
While most companies in Britain will have been nervously waiting the outcome of the EU referendum yesterday, for energy firms there is another issue looming.