The coalition has unveiled measures it says will knock £50 off the average energy bill, but some of that cost will be absorbed by taxpayers.
The Government has laid out its ideas on how to cut energy bills this winter - but the plan has been put together in haste.
With prices going up, millions of the big 6's customers certainly feel the firms are making too much cash. How much are they really making?
The UK currently has roughly four wind turbines on land for each one at sea, according to the trade association Renewable UK:
- Offshore wind power - 1,075 turbines (3,653 MW capacity)
- Onshore wind power - 4,175 turbines (6,772 MW capacity)
Danny Alexander has insisted that onshore wind energy will continue to play "a big role" in the UK, despite the decision to reduce Government subsidies in this area.
The Liberal Democrat Chief Secretary to the Treasury said state help for onshore wind and solar was being reduced "slightly" in favour of offshore wind.
But he told BBC Radio 4's Today programme that the move would present better "value for money" and could open the way for an extra 10 gigawatts of energy by 2020.
The "strike prices" for renewable energy - the amount of subsidy the taxpayer pays to entice investors to make long-term commitments - is already set well above the current market value, but will be slightly lower for onshore wind and solar.
The boss of energy firm npower has said he would be receiving a "much reduced" bonus because of his company's poor customer service.
Chief executive Paul Massara apologised for what regulator Ofgem dubbed the "serious deterioration" in customer service.
He told Daybreak: "The fact is we haven't delivered the customer service they deserve.
"When the board sit down and review my bonus they will reduce my bonus because I haven't actually delivered for customers."
Energy companies were guilty of "outrageous blackmail", according to a consumer campaigner, who saw the latest attempt to cut bills by £50 as an empty gesture.
"I'd be more impressed if energy companies had said they were going to lower bills by an average of £50 and were going to do it now," Ann Robinson of Uswitch told Daybreak.
She expressed scepticism over the "Big Six" energy companies motivation and what the Government could do to intervene on behalf of struggling consumers:
"I think there is a limit to what can be done. It is playing around the edges. It is not real. I also hear for example, is that one of things that the energy company is looking to is to delay even more the smart meter programme."
npower received five times as many complaints as the best performing energy firm SSE, research showed.
- npower had 202.5 complaints per 100,000, compared with 38.3 for SSE - the lowest level of the main energy providers - from the April to June period, Consumer Futures research showed.
npower also recently announced a 10% average bill increase but has said that it will reduce bills as a result of a shake-up of Government green levies.
– Sarah Harrison, Ofgem senior partner
Many npower customers will have noticed a serious deterioration in service levels over the last year.
The huge growth in complaints about npower is wholly unacceptable and is an issue that Ofgem takes very seriously and is why we intervened in this case.
npower's commitment that its customers will not lose out financially as a direct result of the company's billing system problems is important and we will expect npower to do all it can to identify and rectify such cases.
npower's chief executive has apologised "unreservedly" after billing errors affected thousands of customers.
Paul Massara wrote in a letter to npower's 3.4 million customers: "We've let many of you down recently in the overall levels of customer service we've been providing. We apologise unreservedly."
He said the billing problems arose after customer details were transferred on to a new computer system. Around 700,000 customers are thought to have been affected by the problems, though it is believed the vast majority are not financially worse off.
Mr Massara said the issue was being dealt with as "our top priority", and hundreds of staff were working to address it.
Many customers affected had already been contacted individually to address specific problems and others would be, he added.
Gas and electricity supplier npower has written to its 3.4 million domestic customers and donated £1 million to vulnerable consumers after billing errors led to it being the most complained-about energy company.
Regulator Ofgem said there had been a "serious deterioration" in customer service levels after the German firm admitted a glitch had led to a number of errors.
The errors included; a number of bills and statements failing to go out on time, direct debit payments not being set up properly and some customer accounts having problems being started
npower chief executive Paul Massara said that anyone affected would not lose out financially as a result in his letter to customers.
Ofgem said it had been increasingly concerned about npower's customer complaint levels, which have risen sharply in the last year, but welcomed the apology and payment.
The main measures confirmed in Ed Davey's Energy Statement are as follows:
- Government will provide £300m in both 2014 and 2015 - £600m in all - for a new rebate to all domestic electricity customers worth £12 each year
- It will consult on reforming the Energy Companies Obligation to make it cheaper, knocking £30-35 off average bill next year
- The Affordable Warmth and Carbon Saving Community Obligation - schemes which help low-income and vulnerable households - will be maintained at current levels and extended until March 2017
- The electricity distribution network operators will make voluntary improvements worth £5 from the average energy bill
He says these measures combined will result in saving worth £50 on the average energy bill.