List of shame: shocking tally of penalties

May 2014

Eon fined a record £12 MILLION for mis-selling, with compensation expected to reach up to £8 MILLION.

scottishpower fined £750,000 for overcharging.

Npower fined £125,000 for erroneous reporting of data on renewable energy schemes.

April 2014

British Gas pays out £5.6 MILLION for blocking business customers from switching.

December 2013

Npower ordered to pay £3.5 MILLION to compensate customers for its poor sales practices. Also promises to pay

£1MILLION to vulnerable customers because of problems with its billing system.

October 2013

ScottishPower forced to hand over £8.5 MILLION for mis-selling.

July 2013

Eon fined £3 MILLION for inaccurate reporting over the number of energy-saving light bulbs it sent to customers.

May 2013

OFGEM confirms its decision to fine SSE £10.5 MILLION –a record at that time – for misselling to customers.

Are you owed cash?

EON is contacting customers it may have mis-sold tariffs to and wants to review their cases and offer compensation. If you bought a deal from Eon between June 2010 and last December you can apply for a review at eonenergy.com or call 0800 0568497.