The cheapest gas and electricity tariff in Southern Wales by Direct Debit, among the suppliers that publish their tariffs openly, is E.ON Next Pledge Tracker 12m v12 at £1,693.47 a year at Ofgem's typical use (electricity 25.55p per kWh and 55.41p a day, gas 7.82p per kWh and 29.96p a day), £50.43 below the price cap of £1,743.90, as E.ON Next's own tariff feed stated on 15 Nov 2026.
Prices from the suppliers that publish their tariffs openly: Octopus Energy (with Co-op Energy and London Power), EDF and E.ON Next (with Sainsbury's Energy); other suppliers are not listed.
Cheapest first on a year at Ofgem's typical use. Annual figures are for Ofgem's typical household (2,500 kWh of electricity and 9,500 kWh of gas a year, in force since 1 July 2026): unit rate x typical use + standing charge x 365.
Economy 7 figures use Ofgem's typical multi-rate household: 3,400 kWh a year, 58% at the day rate and 42% at the night rate.
Cheapest first on a year at Ofgem's typical use. Annual figures are for Ofgem's typical household (2,500 kWh of electricity and 9,500 kWh of gas a year, in force since 1 July 2026): unit rate x typical use + standing charge x 365.
Economy 7 figures use Ofgem's typical multi-rate household: 3,400 kWh a year, 58% at the day rate and 42% at the night rate.
Cheapest first on a year at Ofgem's typical use. Annual figures are for Ofgem's typical household (2,500 kWh of electricity and 9,500 kWh of gas a year, in force since 1 July 2026): unit rate x typical use + standing charge x 365.
Economy 7 figures use Ofgem's typical multi-rate household: 3,400 kWh a year, 58% at the day rate and 42% at the night rate.
These charge different unit rates at different times of day, so one figure for them would be made up. Each is shown with what its supplier's feed states.
Ofgem, 1 October to 31 December 2026. Figures are rounded to two decimal places and include 5% VAT on gas. There is no VAT on electricity from 1 October 2026 to 31 March 2027.
Prices from the suppliers that publish their tariffs openly: Octopus Energy (with Co-op Energy and London Power), EDF and E.ON Next (with Sainsbury's Energy); other suppliers are not listed. Unit rates and standing charges are read once a day from each supplier's own tariff feed, most recently on 15 Nov 2026, and shown as printed. Prices are the feeds' VAT-inclusive figures as printed, which on 15 Nov 2026 carried no VAT on electricity and 5% VAT on gas. No VAT is added or removed here.
Annual figures are for Ofgem's typical household (2,500 kWh of electricity and 9,500 kWh of gas a year, in force since 1 July 2026): unit rate x typical use + standing charge x 365. Economy 7 figures use Ofgem's typical multi-rate household: 3,400 kWh a year, 58% at the day rate and 42% at the night rate. Your own use will differ, so your bill will too. A tariff that charges different rates at different times of day is listed with its standing charge and never given one figure.
The price cap is Ofgem's, for 1 October to 31 December 2026: unit rates and standing charges by region. Typical use is Ofgem's too: typical domestic consumption values. Contains public sector information from Ofgem, licensed under the Open Government Licence v3.0.
Information, not advice. No supplier pays to appear, and the order is set by price alone.