At the beginning of October, National Grid warned of the risk of power cuts over the winter if the energy crisis escalated, with certain areas likely to be "without power for up to three hours".
On Oct. 17, the agency further clarified when power outages might occur. John Pettigrew, head of National Grid, said power cuts would have to be implemented in January and February if generators did not have enough gas to meet demand, particularly during a period of cold weather.
National Grid has said it will give customers at least a day's notice of the outages and that they will be rolled out regionally, not affecting all areas at once.
Much of the electricity is generated by natural gas, which has put pressure on the country's electricity supply as demand increases in cold weather, the agency said.
It is reported that 40% of the UK's electricity comes from gas-fired power stations, and gas heats the vast majority of homes.
The UK's National Grid says many European countries are facing gas shortages as a result of Russia's problems with Ukraine.
The UK does not import gas from Russia, but imports electricity and gas from European countries that depend on Russian gas.
If Europe's energy crisis escalates, it will have a knock-on effect on British households.
Meanwhile, new Treasury secretary Jeremy announced that caps on energy bills had been drastically reduced from two years to "at least until April", the BBC reported.
It means the average household's energy bill is likely to double to £5,000 a year from next April.And because utility bills are so high, British pubs and restaurants are increasingly using candles instead of lights.
According to The Guardian, The Masons Arms pub in Cornwall has switched to candles since 27 September in an effort to cut energy bills.
The bar owner said the idea of using candles came to her after she saw her electricity bill for August. Her electricity bill was £2,574 last month, compared with £1,172 a year earlier. "One of the locals told me: 'You should go back to 1753 when the pub opened [with candles]. '"
At the end of the summer, the pub industry warned that thousands of pubs faced closure if they did not get government support.