As the rebate programme expires and Chancellor Jeremy Hunt raises the maximum to £3,000 in the March budget, millions of households in the UK face a 40% increase in energy costs beginning in April. 

This increase will affect all households except the weakest and most vulnerable welfare recipients, who will receive additional government assistance.

As the wholesale cost of energy has decreased in recent weeks, there has been a growing demand for the Treasury to halt the planned energy price guarantee (EPG) increase. 

Despite the demands, Chancellor Hunt has denied requests to prevent the steep increase in residential energy costs.

The March budget increased the annual discount on gas and electricity for the average household from £2,500 to £3,000. Except for households with the lowest incomes, this will effectively increase by approximately 40% for all households.

Martin Lewis, the founder of MoneySavingExpert.com and an advocate for consumers, has led the charge to suspend the EPG increase.

Additionally, the Labour Party has demanded that the increase be halted and that a windfall tax on the profits of energy companies cover the government’s additional expenditures.

According to Treasury insiders, the proposal to suspend the increase must be considered due in part to lower-than-anticipated Treasury receipts from the windfall tax on energy corporations and concerns about exposing taxpayers to future market risk. Even though petrol prices have decreased, they remain five times the historical average and are likely to increase. 

The Treasury believes that reducing taxpayer exposure to market volatility is crucial, as indefinitely insulating every property could have significant financial consequences for the state.

The November autumn statement projected that the windfall tax would generate £55 billion over five years. However, this amount has decreased by £25 billion due to recent declines in energy prices and is now anticipated to be closer to £30 billion.

Shadow Chancellor Rachel Reeves has criticised the government’s refusal to implement a windfall tax on energy corporations, stating that the prospect of such significant price increases for most homes is frightening and disgraceful, especially because energy companies are earning enormous profits.

Analysts at Deutsche Bank estimate that maintaining the price cap of £2,500 will cost the government an additional £4.5 billion, as petrol prices are falling swiftly and energy companies are unlikely to require subsidies after July. 

The analysts believe that keeping the limit on household prices at £2,500 would help to reduce inflation.

The scheduled increase in the energy price guarantee and the expiration of government assistance will significantly increase energy costs for millions of households in the UK, except for the poorest and most vulnerable. 

Consumer advocates and political parties have criticised the government’s refusal to suspend the increase and have called for a windfall tax on energy companies to cover the additional costs.