Many people on the UK face huge changes to their energy bills which could see them more than double to as much as £3,700 a year.
In April, the price cap on energy bills will be raised, while people who locked into cheap fixed-price tariffs a year ago are set to see their deals end.
The amount the price cap will go up by is set to be announced next month.
READ MORE: Martin Lewis shares 'only way' people can pay less for energy in 2022
Figures from the website TheEnergyShop show at least 226 deals will end before March, reports The Mirror.
People who signed up to a deal a year ago could currently be paying £850 a year for gas and electricity.
The current cap - before the change announced next month - is £1,277 a year, a rise of 50% on each bill, Hull Live reports.
It is forecast that the cap will then be set at around £2,000 in an announcement next month - a total rise of around 135% for some people year on year.
Some energy companies are already quoting an annual gas bill of up to £3,700.
Joe Malinowski, founder of TheEnergyShop.com, said: “These two hikes will see many consumers’ bills double over the space of just a few months.”
Finance guru Martin Lewis has said he expects the huge increase will leave a significant number of people having to choose "between heating and eating".
He said: "There are lots of people out there that can afford the increase and won't like it, but there are also millions of people who will be thrown into fuel poverty, who will get close to having that choice between heating and eating."
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