Most homes could save with Octopus Energy

More than 50% of British homes are on a default tariff with a legacy energy supplier.

They could save by switching to Octopus. We've never charged the full energy price cap. Check out our calculations here.

Plus, we'll sweeten the deal with £50 credit

Find out if you could save with Octopus

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With Octopus you'll get:

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5-star customer service

90% of our customers rate us 5 stars on Trustpilot.

Fair prices for the long term.

We're the only supplier to keep our prices below the price cap. Here's how we do it.

Smart tariffs for smarter savings

Got an EV, heat pump or solar panels? Smart tariffs help you save by using energy when it’s greenest.

Extra perks, like free coffees

With Octoplus, you could get over £200+ freebies every year.

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Our green mission

We’re one of Europe's biggest investors in clean, green, renewable power.

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Unbeatable service

Very quick response from customer service, efficient helpful and solved my issue. Would recommend them 100%

Roger Riley,

17 Apr 2025

Saved money

Easy to submit readings and change tariffs. I have actually saved money over the winter and my new fixed tariff is saving me money again !!

D Summer,

8 Apr 2025

Friendly and helpful

Spoke to Zoe as I had just moved home and wanted to set up an account. She was pleasant as she did this for me and talked me through everything. Thank you.

Jennifer,

28 Mar 2025

Our calculations explained:

29 million households are connected to the electricity grid in Britain. 22 million households are connected to the gas grid [Source: Energy Networks]
Of those, 7.6 million are Octopus electricity customers and 6 million are Octopus gas customers already. [Source: Internal Octopus data]
Of the remaining 21.4 million electricity households Ofgem’s Retail Market Indicators show 13 million (60%) are supplied by the other large suppliers on their default tariff.
Of the remaining 16 million gas households, 11 million (68%) are supplied by the other large suppliers on their default tariff. The other large suppliers are British Gas, E.ON, EDF Energy, OVO Energy & Scottish Power. Both Shell Energy and Bulb customers are now Octopus customers.
Ofgem’s Retail Market Indicators show Octopus Energy has the cheapest default tariff of any large supplier.
The overwhelming majority of small and medium suppliers also charge within a few pounds of the Default tariff cap for their default tariffs, but as public information is scarce for customer numbers and tariff choices, we’ve excluded them from this calculation.
Octopus Energy’s 12M Fixed tariff is also cheaper than the Default tariff cap. While prices change regularly, a typical dual fuel annual quote is £1,731 as of 04/03/2025. (Source: Internal Octopus data)
This means >60% of homes would pay less on their annual bill if they switched to Octopus Energy.

Hey I'm Constantine, welcome to Octopus Energy!