EDF launched three fixed tariffs on 5 September 2024, saying its one-year Essentials Fixed Sep25v2 is the cheapest energy-only fixed deal among major suppliers at £1,649, which it states is £68 below the Ofgem price cap level taking effect in October1. The supplier also priced a two-year fix, Sept26v2, at £1,669, again described as the cheapest energy-only deal of the major suppliers1. Both allow new and existing customers to fix under the upcoming cap until September 2025 and September 2026 respectively1.
The October cap was set to raise the average energy bill by 10%, from £1,568 to £1,717, on Ofgem's typical domestic consumption values of 2,700 kWh of electricity and 11,500 kWh of gas a year1. EDF's third offer is a one-year fixed tariff tracking £50 below the price cap, with the £25 per fuel saving coming from standing charges rather than unit rates, so the same financial benefit applies to low energy consumers and Pay As You Go meter customers1.
| Tariff | Length | Price | Position against October 2024 cap |
|---|---|---|---|
| Essentials Fixed Sep25v2 | One year | £1,649 | £68 below |
| Sept26v2 | Two years | £1,669 | £48 below |
| Price cap tracking tariff | One year | £50 below cap | £25 per fuel from standing charges |
EDF said the tariffs require a smart meter, or agreement to have one installed, and that customers using its Energy Hub platform to review their bills can reduce them by up to £41 a year1. It warned that, due to ongoing volatility in global wholesale prices, the deal could be removed at any time1.
"Energy prices had been decreasing, but we are all too aware that because of increases to the price cap, this will change shortly. We know customers will be concerned and we want to do all we can to help."
Separate market data published later, on 6 March 2026, shows EDF's cheapest two-year fixed tariff priced at £1,772, estimated to cost £1,644 once levies are removed from April 20262. That figure is not comparable with the September 2024 launch prices, and the two sets of numbers reflect different cap periods and different treatment of levies.
Why it matters for households
A fixed tariff sets the unit rate and standing charge for its term, so the household's cost per unit of gas and electricity does not move when the price cap changes. For a home trying to plan its energy spending, that removes the main source of uncertainty in a variable or capped tariff: the cap is reviewed quarterly and can rise or fall. Fixing below the cap level in force at sign-up means the household starts cheaper than the capped default, but it also means giving up the benefit of any future cap fall for the length of the term.
The standing-charge design of the cap-tracking tariff matters for homes that use little energy, because a saving delivered through standing charges is received in full regardless of consumption, whereas a unit-rate saving shrinks with lower usage. The smart meter requirement is a condition of these tariffs, not an optional extra, and a smart meter also underpins time-of-use products such as electric vehicle tariffs and export payments for home generation. Exit fees, term length and what is actually fixed are set out in the site's guide to fixed-rate energy tariffs, and the comparison with remaining on the cap is covered in fixed tariff vs price cap.
What happens next
EDF states the tariffs could be withdrawn at any time because of wholesale price volatility1. Its price cap forecasting service predicted a further rise in the New Year1. No closing date for the tariffs has been reported.