EDF

Ofgem has written to the big energy suppliers demanding they take action on the poor handling of complaints after the regulator found the average customer had to contact their supplier six times before an issue was resolved.

Ovo Energy has topped our poll for customer service for the second time running with more than 80% of its users rating its service as "great". At the other end of the scale, Npower remains last for the third poll running.

Energy prices are unlikely to rise before the end of the year but there is a threat of increases over the next few years, according to predictions from industry experts.

EDF Energy is to pay £3m to charity helping 'vulnerable customers' after regulator Ofgem found it breached complaint handling rules in 2011.

The cheapest energy tariff we've seen this year has launched today – and it could take an average household's annual bill down to under £1,000.

Prepaid energy customers will have more choice over getting a fixed gas and electricity tariff, as EDF has today announced it'll become the second of the big six energy suppliers to offer one.

The big six energy companies could face a full-scale investigation into whether they are preventing competition in the market and making excess profits, reglator Ofgem has announced.

Big six energy supplier Scottish and Southern Energy (SSE) is to freeze household gas and electricity prices until at least January 2016.

Energy minnow First Utility has undercut its rivals by launching the market's cheapest tariff – but is it worth switching to?

If you've signed up to a fixed price energy tariff in the past few years, your bill could be about to soar as 15 deals are ending soon. But you can beat the hikes – if you act now.