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 rival Npower, which 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 rising wholesale prices meant that without this price hike it would make a loss this year.
British Gas said that rising wholesale prices meant that without this price hike it would make a loss this year.
'Higher transport costs'
"In the last six months of 2007, higher wholesale gas prices have reduced British Gas operating margins to around 1%, and at current wholesale prices would be loss making in 2008 without the increase," its owner Centrica said in a statement.
"In the last six months of 2007, higher wholesale gas prices have reduced British Gas operating margins to around 1%, and at current wholesale prices would be loss making in 2008 without the increase," its owner Centrica said in a statement.
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 statement added that 340,000 vulnerable customers on its Essentials tariffs will have the price increase delayed until the end of the winter.
It is also offering free insulation to any UK home owned by somebody over the age of 70.
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