A school trust leader has warned one of its school's energy bills could rise by 414% next month, based on one quote.
Chief executive Dave Baker said energy bills were fixed in 10 out of 11 schools run by the Olympus Academy Trust across south Gloucestershire.
He said if the other 10 schools followed suit its £907,000 energy costs could rise to £4.6m per year from 2023.
The Department for Education has said school budgets would rise by £7bn by 2024-45 compared to 2021-22.
The spokesperson said they "recognise that schools - much like the wider economy - are facing increased costs" and £4bn extra funding would be given to schools "in this financial year alone".
