Fuse Energy vs Octopus Energy: Which Is Cheaper?

Fuse Energy vs Octopus Energy comes down to one practical split: Fuse tends to price its fixed deals below Octopus on a like-for-like basis, while Octopus offers more tariff choice, easy dual fuel and no exit fees. On live quotes, Fuse is often slightly cheaper than Octopus on comparable fixed deals, although the gap is usually modest and depends on your postcode, meter type and payment method.

The right answer depends on your postcode, meter type, payment method and how you use energy, because unit rates and standing charges vary by region. Free Price Compare compares live tariffs from across the market so you can see the actual price for your address rather than a headline figure. This comparison sets out the price differences, the switching process, exit fees, dual fuel and the app-only trade-off, so a bill-conscious household on a variable tariff can choose with confidence.

Last updated: August 2026

Written by the Free Price Compare editorial team | Reviewed August 2026

Which is cheaper, Fuse or Octopus?

Fuse Energy is generally the cheaper of the two on a like-for-like fixed tariff, but the difference is often measured in tens of pounds rather than hundreds. On live quotes, Fuse’s fixed and variable tariffs can be competitive with Octopus’s, but the cheapest option changes by postcode, meter type and payment method. Both suppliers surfaced sub-£1,000 examples for a typical low-usage household in those results. The position can be different on variable deals, where Octopus is sometimes fractionally cheaper. Because unit rates and standing charges are set by region, the only reliable comparison is a live quote for your exact postcode and meter type.

For context, the Ofgem energy price cap, set by Ofgem, caps the unit rate and standing charge a supplier can charge a typical dual-fuel direct debit customer on a standard variable tariff. A fixed deal priced below the current cap can save a household that uses average or above-average energy, which is why many bill-conscious homes look at fixed tariffs from challenger suppliers.

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Who are Fuse Energy?

Fuse Energy is a UK challenger energy supplier that provides both gas and electricity to domestic customers, managed primarily through its mobile app. Fuse has built its position on competitively priced fixed tariffs and lower standing charges than several established suppliers, which appeals to households trying to cut costs. Like every licensed domestic supplier, Fuse operates under rules set by Ofgem, which means its customers are covered by the same core protections as any other UK energy customer, including the Supplier of Last Resort safety net if a supplier fails. Fuse does not force smart meter installation, which some customers value, though a smart meter is often needed for certain tariff types.

Is Fuse Energy any good?

Fuse Energy is a reasonable choice for cost-focused households who are comfortable managing their account through an app, with competitive fixed pricing and lower standing charges being the main draw. The trade-off is that Fuse is app-only, so if you prefer to phone a supplier or manage everything online through a full website, that is worth weighing up. Customer-service quality varies by person and situation, so check current independent reviews before switching. As with any supplier, read the tariff terms for the unit rate, standing charge and contract length before you commit, and compare the estimated annual bill against your current deal rather than the headline monthly figure.

Does Fuse Energy charge an exit fee?

Fuse Energy does not charge an exit fee on its current tariffs at the time of writing, which means you can leave for a cheaper deal without a penalty. Octopus Energy also has no exit fees on its tariffs, so on this point the two suppliers are level and both give you the freedom to switch again if prices fall. Exit fees matter most on fixed deals, because a penalty can wipe out the saving from moving to a cheaper tariff mid-contract. Always confirm the exit-fee position in the tariff’s terms before you sign, as suppliers can change this on new tariffs. If you are switching away from another provider, check whether your existing deal has a penalty first, as our guide to exit fees and switching explains how to time a move to avoid extra charges.

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Does Fuse supply gas as well as electricity?

Fuse Energy supplies both gas and electricity, so you can take a dual fuel tariff from Fuse rather than splitting your energy across two suppliers. Octopus Energy also supplies both fuels, which means either provider can be your single dual fuel supplier. Taking gas and electricity from one supplier can simplify billing and sometimes attracts a small dual fuel discount, though the saving is usually modest. Some households deliberately split fuels, keeping electricity with one supplier and gas with another, to chase the cheapest rate on each, and this is allowed in the UK. If you go down that route, weigh the potential saving against managing two accounts and two direct debits. Comparing fixed against variable on each fuel can help, and our fixed vs variable gas tariff guide sets out the trade-offs.

How do I switch from Octopus to Fuse?

Switching from Octopus to Fuse takes a few minutes online and follows the standard UK energy switching process: you get a quote for your postcode, choose a tariff, and the new supplier arranges the switch for you. Under Ofgem’s rules a switch generally completes within five working days once you have signed up, and you are protected by a 14-day cooling-off period during which you can cancel without penalty. You do not need to contact Octopus yourself, as Fuse handles the transfer, and your supply is never interrupted because the physical gas and electricity are unchanged. Take a meter reading on your switch date so your final Octopus bill and first Fuse bill are accurate. If Octopus owes you a credit balance, they refund it after your final bill, so switching does not put that money at risk.

What happens to my Warm Home Discount if I switch?

Your Warm Home Discount eligibility depends on which supplier you were with on the scheme’s qualifying date, not on who you switch to afterwards. If you qualified with your old supplier on the qualifying date, that supplier remains responsible for applying the discount, and your new supplier is not involved for that scheme year. Check whether both Fuse and Octopus participate in the Warm Home Discount before switching if you rely on it, because not every supplier offers the scheme every year. The discount is worth checking against any tariff saving, so factor it in before deciding.

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Fixed vs variable: which tariff type suits you?

A fixed tariff locks your unit rates and standing charge for the contract length, usually 12 to 15 months, while a variable tariff moves with the market and is limited by the Ofgem price cap. Fuse tends to be more competitive on fixed deals, so a household that wants price certainty and uses average or above-average energy often finds Fuse’s fixed tariffs attractive. Octopus can be competitive on variable pricing and offers a wider tariff range, which suits customers who want flexibility or a tracker-style deal. Fixing protects you if wholesale prices rise, but you could pay more than the cap if prices fall during your term. For a household on a standard variable tariff sitting above the price cap floor, moving to a well-priced fixed deal is often where the saving is, and our fixed price energy guide explains how to judge the risk.

How the price cap affects a fixed deal

The Ofgem energy price cap sets the maximum unit rate and standing charge for a typical customer on a standard variable tariff, but it does not cap fixed tariffs and it is not a limit on your total bill. A fixed deal can be priced below or above the prevailing cap, so comparing a fixed tariff’s estimated annual bill against your capped variable bill is the clearest test of whether switching saves money. Because the cap is reviewed every three months, the gap between fixed deals and the cap changes through the year, so timing matters. Our guide to the price cap and fixed tariff pricing shows how the two interact.

Is Fuse Energy reliable, and could it go bust?

Fuse Energy is a licensed UK supplier regulated by Ofgem, and if any licensed supplier fails, Ofgem’s Supplier of Last Resort process moves affected customers to a new supplier automatically, protecting their supply and any credit balance owed. No household is left without gas or electricity if a supplier goes out of business, and your credit balance is protected under these rules. That said, challenger suppliers can be more exposed to volatile wholesale prices than large incumbents, so weigh a low price against the supplier’s track record. If financial resilience is a priority, check current independent reviews and the supplier’s history before switching, and remember the safety net applies to Fuse and Octopus alike. Switching in a period of market turbulence carries the same protections, as our guide to switching during a crisis explains.

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Which supplier should you choose?

Choose Fuse Energy if your priority is the lowest fixed-tariff price and lower standing charges, and you are comfortable managing your account through an app. Choose Octopus Energy if you want wider tariff choice, tracker or variable options, or the reassurance of app, web and phone support. Both supply dual fuel, neither charges an exit fee on current deals, and both are covered by the same Ofgem protections, so the decision usually comes down to price for your postcode versus how you prefer to manage your account. The single most useful step is to run a live comparison for your exact address and meter type, because regional unit rates and standing charges decide the real winner. Comparing at the right time of year also helps, and our guide to the best times to compare energy shows when fixed deals tend to sharpen.

• British Gas Exit Fees & Switching Guide: Avoid Extra Charges
• Compare Gas Tariffs – Top 20 Cheapest Deals in the UK
• How Fixed Tariff Pricing is Affected by the Energy Price Cap
• Fuse Energy vs British Gas – Which One Should You Choose?
• Best Times of Year to Compare Electricity Deals UK

Information correct as of 11 August 2026. Prices, tariffs, policy details and providers change frequently, so please check the latest details before making a decision. This article is for general information only and does not constitute financial advice. Free Price Compare is authorised and regulated by the Financial Conduct Authority (FCA).