Fixed value offers present certainty for a set time period, but when costs drop, folks could discover themselves caught with the next value.
Cornwall Insight, a forecaster that tracks power markets, has instructed costs could rise barely once more in January attributable to an increase in wholesale prices paid by suppliers.
It says the standard family may pay £1,762 a 12 months.
Given that costs are rising, Ofgem says folks ought to think about fastened offers in its place.
However, it provides that they need to search impartial recommendation and think about what’s most essential to them – the bottom value or the safety of a hard and fast deal.
Price comparability web site Uswitch says the marketplace for Fix is ​​the most effective it has been in recent times.
Some offers mean you can lock in for a 12 months, some for longer.
Uswitch warns that clients ought to examine whether or not sure offers have exit charges earlier than signing up and ensure they totally perceive the phrases of the contract.
Since the value vary adjustments each three months, it's troublesome to know for certain whether or not a sure tariff is an efficient deal or not. The longer the fastened interval, the higher the uncertainty.
With inputs from BBC
