There is no single winner between Octopus, British Gas and EDF. Octopus tends to suit households that want smart and time-of-use tariffs, British Gas suits people who value boiler cover and a large engineer network, and EDF appeals to those who want low-carbon nuclear-backed electricity and solid fixed deals. The cheapest option for your home depends on your usage, meter type and whether you can shift consumption to off-peak hours. This guide sets the three side by side, then adds five more ways to switch, including a broker and two comparison sites. Each was chosen because it either supplies a large share of UK homes or makes comparing them easier.
1. Octopus Energy
Octopus Energy is now the UK’s largest household supplier and is known for tariffs that reward flexible use, especially for homes with electric vehicles, heat pumps or batteries. It suits people with smart meters who can run appliances overnight or when prices dip. Customer service generally gets good feedback. The caveat: smart tariffs only pay off if you actually change your habits, and households with fixed routines may see little benefit over a standard fixed deal.
2. Utility Bidder
Utility Bidder is best known as a business energy broker but also arranges home energy switching. It suits busy households who would rather hand the comparison and switch to someone else, with a person handling the paperwork rather than an online form. The service costs the customer nothing because the broker is paid by the supplier. One honest caveat: you see the suppliers on its panel, not literally every domestic tariff on the market.
3. British Gas
British Gas is the UK’s best-known energy brand and supplies millions of homes with gas and electricity. It suits households that want energy plus boiler and home cover from the same company, and those who like the reassurance of a large engineer workforce. Its fixed tariffs come and go throughout the year. The limitation is that bundled cover can make the total bill look higher than a pure energy quote, so compare like for like.
4. EDF
EDF supplies homes across Great Britain and generates much of its electricity from nuclear power, which appeals to people who want lower-carbon supply. It offers fixed tariffs, electric vehicle options and a heat pump tariff. It suits households wanting a big, stable supplier with clear fixed deals. The caveat is that its smart and flexible tariff range is narrower than Octopus’s, so heavy EV or battery users may find better-matched options elsewhere.
5. E.ON Next
E.ON Next is E.ON’s household supply brand and a common alternative to the big three. It offers fixed and variable tariffs, plus EV and heat pump deals, and often installs smart meters as part of switching. It suits households wanting a large supplier with a broad tariff menu. Like any single supplier, it only shows its own prices, so check it against a comparison site.
6. Uswitch
Uswitch is a long-running price comparison service for home energy. It suits people who prefer to enter their usage and postcode and see a list of available tariffs in minutes. It is quick and requires no phone call. The limitation is that not every supplier or tariff appears on every comparison site, and the order of results can reflect commercial arrangements.
7. MoneySuperMarket
MoneySuperMarket compares home energy alongside insurance and broadband, which suits households reviewing several bills at once. Entering an annual kWh figure from your last statement gives a far more accurate result than an estimate. The caveat is the same as for Uswitch: coverage is broad but not complete, so run at least two comparisons before deciding.
8. Stay on the price cap and review in three months
Sometimes the right move is to wait. If fixed deals are priced above the Ofgem cap, staying on your supplier’s standard variable tariff costs nothing extra and leaves you free to switch with no exit fee. It suits households unsure where prices are heading. The limitation is that you take on the risk of the cap rising, so set a reminder to review.
How to choose
- Pull your annual kWh usage from a recent bill before comparing anything.
- Compare standing charges as well as unit rates.
- Check exit fees on any fixed deal.
- Match smart tariffs only to habits you will genuinely change.
- Confirm whether your meter type limits which tariffs you can take.
Grab your latest bill and run one comparison site plus one direct supplier quote. If nothing beats the cap rate, stay put and revisit next quarter.
