Consultancy Cornwall Insight estimated the price cap will be just under 1,900 a year for a typical dual fuel customer.
It suggests the default tariff cap will be £1,897 for summer and £2,054 for winter.
The consultants note that the next two periods include the costs created by supplier failures – they estimate the total cost will stand at £2.4 billion, excluding the costs associated with Bulb‘s special administration.
The current winter 2021-22 cap level stands at £1,277 per annum.
Cornwall Insight analysts had previously found that the difference between the current price cap and the cheapest deals is just £2 per year.