Ten popular fixed energy plans from Npower, Co-operative Energy, First Utility and EDF Energy are expiring on 31 March 2017.
Families who are on these plans could see their bills rise by £445 a year, as they will be rolled onto much more expensive standard plans.
The average price hike for those coming off these plans at the end of this month will be £369 per year.
“Ofgem’s rules allow people to switch suppliers without paying exit fees as soon as they are told their plan is ending,” uSwitch said.
“If consumers on these deals act now, they can avoid being rolled on to a significantly pricier tariff.”
If you are on any of the following plans you should switch provider to guarantee a cheaper deal.
Popular fixed energy deals ending in March 2017
Npower Collective Price Fix March 2017
Npower Online Fix March 2017
Npower Fixed Energy Online March 2017
Npower Online Price Fix March 2017
Co-operative Energy Co-op Online March 2017
Co-operative Energy Co-op Online March 2017 (paper bills)
EDF Energy Blue+Price Promise March 2017
First Utility First Fixed March 2017 v2
First Utility First Fixed March 2017 v3
First Utility First Fixed March 2017 v4
“Customers coming off fixed deals at the end of the month are going to be hit by a double whammy price hike unless they switch now,” Claire Osborne, uSwitch.com energy expert said.
“When fixed deals end, customers often get rolled onto their supplier’s standard tariff, which is significantly more expensive and subject to price increases.
“Customers coming off npower’s Collective Price Fix March 2017, for example, will pay an extra £445 more a year on its SVT, which would have been £335 before the company’s recent 9.8 per cent price rise.”
She urged families to check their bills now to see if they are on the popular plans immediately.
Recently, EDF announced customers will see the cost of energy rise by 8 per cent on average last year. Now these 16 other firms have confirmed similar moves.
Co-op Energy bills will rise by 5 per cent, the second time they have raised their prices in six months, while First Utility will increase their prices by 9.7 per cent.
This means 96,000 Co-op customers will be affected, while 13 per cent of First Utility customers will be affected, so the company claims.
Their customers will see a £105.60 per year increase.