September 30 marks 'meter reading day' as it is the last day energy customers can submit their readings before the prices rise.
However, energy firms such as British Gas, SSE, EDF and Bulb Energy have confirmed that they will backdate unit rates if customers can't submit meter readings on September 30.
The new energy price cap comes into force on October 1, pushing the average household yearly bill to £2,500. The daily charge of 28p gas and 46p electric and unit rates will be increased to 10p/kWh for gas, and 34p/kWh for electric. This will lead to the average household yearly bill being £2,500.
