British Gas, the UK's biggest power provider, is to raise the amount it charges for gas and electricity by 15%.
British Gas, the UK's biggest power provider, is to raise the amount it charges for gas and electricity by 15%.
The announcement followed increases from rival Npower, which raised its electricity prices by 12.7% and gas by 17.2% earlier this month.
The announcement followed increases from rivals Npower and EDF Energy, with the firms blaming high wholesale costs.
British Gas, owned by Windsor-based Centrica, said that it would make a loss this year without the price rise.
Consumer groups and the Unite trade union have criticised the move, saying it will make life harder for companies, the elderly and those on low incomes.
Before the British Gas move, Npower raised its electricity prices by 12.7% and gas by 17.2% earlier this month.
EDF Energy also put up its electricity tariffs by 7.9% and gas bills by 12.9% this week.
EDF Energy also put up its electricity tariffs by 7.9% and gas bills by 12.9% this week.
British Gas said that higher wholesale prices meant that without this price hike it would make a loss this year.
The Unite union called the recent increases by the power companies "excessive" and said that the government should look at ways of increasing taxes on their earnings.
'Transport costs'
'Transport costs'
British Gas owner Centrica said that: "In the last six months of 2007, higher wholesale gas prices have reduced British Gas operating margins to around 1%."
British Gas-owner Centrica defended its price increase, arguing that market conditions had changed significantly.
It added that at current wholesale prices British Gas "would be loss making in 2008 without the increase".
"In the last six months of 2007, higher wholesale gas prices have reduced British Gas operating margins to around 1%," it said.
Centrica added that at current wholesale prices British Gas "would be loss making in 2008 without the increase".
They are making five times more per customer this year than they were last year Anne Robinson, Uswitch
They are making five times more per customer this year than they were last year Anne Robinson, Uswitch
It also blamed rises in the price it has to pay to transport and distribute energy, as well as the cost of meeting the government's targets for the use of renewable energy sources and reducing carbon emissions.
It also blamed rises in the price it has to pay to transport and distribute energy, as well as the cost of meeting the government's targets for the use of renewable energy sources and reducing carbon emissions.
The 2.4 million British Gas customers on fixed-price tariffs will not be affected.
The 2.4 million British Gas customers on fixed-price tariffs will not be affected.
The statement added that 340,000 vulnerable customers on its Essentials tariffs will have the price increase delayed until the end of the winter.
The statement added that 340,000 vulnerable customers on its Essentials tariffs will have the price increase delayed until the end of the winter.
British Gas is also offering free insulation to any UK home owned by somebody over the age of 70.
British Gas is also offering free insulation to any UK home owned by somebody over the age of 70.
Attracting customers
Attracting customers
The news of higher prices comes after a year in which British Gas has had some success in attracting back customers who had joined other suppliers.
The news of higher prices comes after a year in which British Gas had managed to lure back some of the customers who had switched to other suppliers.
It cut its tariffs in March 2007 and then again the following month to reflect falling wholesale energy prices.
British Gas cut its tariffs in March 2007, and then again the following month to reflect falling wholesale energy prices.
Anne Robinson, director of consumer policy at the price comparison website Uswitch claimed customers were being ripped off.
Anne Robinson, director of consumer policy at the price comparison website Uswitch claimed customers were being ripped off.
"We know from some information from Citigroup that British Gas are in line to declare record profits of £639 million in the next month or two," she told the BBC.
"They are making five times more per customer this year than they were last year," she alleged to the BBC.
"They are making five times more per customer this year than they were last year."
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Are you a British Gas customer? What's your reaction to this news? Send us your comments by filling out the form below.
