They are the biggest rip-off in years and cost each customer more than £300 per year.
Ofgem want to hear from you but you only have today (Friday) left to do so. You can do this by emailing StandingCharges@ofgem.gov.uk or by calling 020 7901 1000 to give your views by 19 January 2024. There is no online form.
I had my say.