British Gas has announced it is cutting 500 jobs.
The job losses will be hitting its loft and cavity wall insulation business, as part of the company's efficiencies programme.
Brian Strutton, national officer of the GMB union described the announcement as "a real sickener".
The jobs are part of 6,000 cuts announced by owner Centrica last summer, with the group saying it had to be competitive in a "fast-changing" energy market.
Mark Hodges, chief executive, energy supply and services, UK and Ireland at British Gas said the company was focused on improving its efficiency and effectiveness.
"British Gas is well positioned to grow, but we must ensure that our costs allow us to be competitive for our customers."
Energy experts criticised British Gas for its 5% cut in gas prices, which comes into effect today - saying the drop should be much higher.Read the full story ›
British Gas has announced it will cut household gas prices by 5%.
It is the second gas price reduction in six months and is expected to save customers an average of £72.
The price cut will come into effect from August 27 benefitting 6 million customers on the Standard Fix & Fall tariffs.
Managing Director Mark Hodges said: "British Gas is committed to offering competitively priced products, and the price cut we’re announcing today demonstrates that.
"This reduction reflects our lower projected total costs for 2015 and 2016 and we’re pleased that customers will see the benefits in their gas bills ahead of next winter."
Centrica's chief executive tells ITV News British Gas customers could get a better deal if they switched, but many value service over price.Read the full story ›
British Gas has been fined £11.1 million by regulator Ofgem after it failed to deliver energy efficiency measures on time.
British Gas will pay the money to charity.
The regulator said British Gas delivered just 62.4% of its Community Energy Saving Programme (CESP) by the required deadline at the end of 2012, meaning thousands of households had to wait for energy efficiency measures, such as insulation, to be installed during the winter.
Ofgem and British Gas, which blamed bad weather as one of the factors behind the delay, said the £11.1 million penalty will be used to help vulnerable customers through energy efficiency advice and improvements.
Energy bills are likely to go up in the longer run if Labour come to power, the chief executive of British Gas owner Centrica has told ITV News.
Leader Ed Miliband pledged to freeze energy bills for 20 months if his party wins the general election, but Sam Laidlaw says the plans are likely to scare investors, thereby raising the cost of capital for energy companies and in turn leading to higher bills.
Asked if the plans were already having such an effect, Mr Laidlaw said general "political uncertainty" was raising the cost of capital for energy firms.
The boss of British Gas parent Centrica has told ITV News the company will make far less profit from energy bills than watchdog Ofgem has suggested.
Chief executive Sam Laidlaw told ITV News Business Editor Joel Hills the energy firm would make £40 profit per customer per year - some way from the £106 Ofgem says energy companies are set to make.
He added the watchdog's estimates were "not an accurate representation" and do not "help consumer trust".
A milder winter and energy efficiencies helped British Gas profits tumble by 26% in the first half of 2014.
Parent company Centrica predicts average bills will fall by around £90 this year because consumers are not using as much power.
However, industry regulator Ofgem has suggested that it sees power companies doubling their profit margins in the second half of the year.
They have already referred the Big Six energy companies to the competition authorities.
ITV News Correspondent Nina Nannar reports:
Online energy comparison site U-Switch says despite a fall in profits, British Gas should be passing on savings to customers.
Anne Robinson from U-Switch says the 26 per cent fall is based on the weather and it was time the energy giant passed on the low wholesale prices to its customers.
She added it was clear "loyalty doesn't pay" and consumers could save as much as £200 a year by shopping around.