Over seven million customers will be hit with gas and electricity price hikes from 15 November, after Scottish & Southern Energy (SSE) became the first of the big six energy firms to announce a price rise.
E.on has agreed to pay £2.5 million to help some of its most vulnerable customers and been fined £500,000 after it inaccurately reported how many free light bulbs it gave out as part an energy efficiency scheme.
Britain's big six energy companies will face fines unless they open up the electricity market to competition from independent rivals, under proposals by Ofgem.
Npower has today become the latest provider to only offer tariffs charging a single rate, but customers who use very little energy could end up paying more.