British Gas owner Centrica hopes a scheme to offer free electricity on Saturdays will encourage households to use electrical appliances at the weekend, when industrial demand is lower.
The development came as Centrica hinted at further price rises as British Gas announced profits from its residential arm rose by 3.2 percent, thanks to the freezing spring weather.
Earnings increased to £356 million during the first half of 2013, as the company cashed in on the bitterly cold temperatures after raising tariffs six percent at the end of last year
More top news
Pet owners have been warned of the skin cancer risk to dogs and cats, amid predictions of a heatwave in the coming days.
Slippery customer was caught out by staff at the pet shop in Florida who confiscated the stolen trouser snake and called in police.
Death rates at UK hospitals are higher at weekends - compared to week days - because patients tend to be more unwell, a new study has shown.