Bigger finally does mean better.
Octopus Energy is now Britain’s biggest energy supplier, trusted by over 8 million customers
As of 31st October 2025 there were 20 fully licensed suppliers in the market consisting of six large suppliers, 2 medium suppliers and 12 small suppliers. More people choose Octopus Energy to supply their energy over any other supplier.
UK energy suppliers and their total number of energy accounts 👆
Not to toot our own horn (of course, we're not perfect) but the results speak for themselves.
We're the UK's most awarded energy supplier
With nine consecutive wins as Which? Recommended Provider of the Year and a 4.8 star Trustpilot rating we were named Britain's most admired company in 2025.
**We put clever technology behind the scenes, so our people can focus on the most important thing: you.
**OfGem measure complaints from all major energy suppliers. They found Octopus Energy to have the lowest number of customer complaints of any of the Big 6 Energy Suppliers.
Domestic complaints received by large suppliers per 100,000 customer accounts 👆
And if you need support our average phone wait time is 1 minute.
Every Octopus customer gets a dedicated support team.
We know how frustrating it is to be passed from person to person when you just need help.
Instead of the usual maze of "please hold while I transfer you to someone who might actually know something about this" we've created something pretty special.
When you switch to Octopus, you're given to a team of energy specialists (usually between 10-15 of them). Each team is entirely responsible for a smaller group of customers, like a mini-business within Octopus, with its own 'CEO'. Each with the training and tools to handle just about anything you need.
This means when you call, you're not just another voice in the void, you're speaking to your team.
Often the same lovely person who helped you last time.
No engineer or installer visits
Your home is your castle. We don't need to disturb you
No disruption to your supply
Plus, we'll inform your old supplier so there's zero faffing
Award-winning customer service
Sick of AI bots? Our UK-based humans are eager to help
Backed by the Energy Switch Guarantee, you can be confident that things will run smoothly and that you're making the right move.
We really will look after you
Our customers are at the heart of everything we do. If you're struggling, we're here to help.
Through our £40 million Octo Assist fund, we’ve been able to provide genuine, practical support. We’ve sent out thousands of free electric blankets to keep customers cosy, reducing their need to put on the heating, and are waiving the standing charge for up to 100,000 customers in the greatest need over winter.
But don't take it from us. Here's what customers we've already helped had to say.
Outrageously good service
We've been a Which? recommended supplier for nine years in a row
Energy for a cheaper, greener future
We're one of Europe's leading investors in renewable generation
Great value for the long term
Our standard tariffs have always been priced below the Ofgem Energy Price Cap
The switching was so easy, a few little clicks on the iPad, and done. I just wish I'd done it sooner, that's the only thingSue
Most homes could save with Octopus
We're on a mission to make green energy cheap.
Most homes in Britain are paying for energy at the price cap rate. We're the only large supplier to consistently price its standard tariff below the Ofgem energy price cap, a decision that has saved our customers tens of millions of pounds in the last 12 months.
If you're paying standard variable rates with any large supplier for your gas, your electricity, or both – you'll save money if you switch to Octopus. See our calculations here.
Switching usually takes less than 5 minutes
To initiate your switch to Octopus, get a quote here, select your tariff and provide us with your contact and payment details. That's it! We'll handle the rest and inform your old supplier. We'll keep you informed throughout the process, and you'll receive an email once you're on supply, typically within 2 working days.
Previously, the processes we handled in the background to switch your supplier could have taken up to 3 weeks. But as of the 18th July 2022, Ofgem's Faster More Reliable Switching Project (FMRS) turbocharged switching to just 2 working days for a typical customer. Read more about FMRS here.
The UK's most awarded energy supplier
We've won more awards than any other energy supplier.
Britain's number 1 choice for energy - the UK's most popular energy supplier.
From the 1st of October 2024, Octopus Energy is the company with the most household energy (defined as the sum of electricity and gas) accounts in Great Britain.
Smart meter customers can claim Octoplus rewards worth over £200
Our free rewards programme Octoplus is available to all Octopus smart meter customers paying by Direct Debit.
Rewards with Octoplus can change throughout the year. For example, you can earn Octopoints for saving energy with Saving Sessions in the colder months and access Free Electricity when the grid is super green.
Last year, Octoplus customers had access to over £300 worth of rewards across the year, which, based on a typical bill, would be equivalent to 17% of annual energy costs.
We power over 100,000 businesses.
Our business customer base reached 100,000 in early 2026 - and we've kept growing since.
We're rated 4.9 out of 5 (Excellent) on Trustpilot.
Head to our Trustpilot for up-to-date ratings and reviews.
No brokers, no hidden fees.
We don't work with energy brokers. You won't find us on price comparison websites. That means there's no commission or third party charges hidden in your rates. It's one of our pricing principles that keep your rates fair.
Our pricing is transparent.
When you sign up, we show you exactly what you'll be paying for. Our bills do this too.
We also have guides to help you understand your energy prices better, like this one.
With us, your fixed price is just that: fixed.
We don’t change it during your contract term. We don’t sneak on extra fees. It's one of our pricing principles that keep your rates fair.
You can get a quote in under a minute.
Our data shows that business customers get an online quote in 44.1 seconds, on average.
Here's how we worked it out:
We measured the duration of a big sample of online user journeys from 1/6/26 to 16/7/26
We excluded business portfolios that are complex, multi-site or extremely high-consuming
The timer started when a user reached the Quote page, before putting in any details
The timer stopped when they saw the first set of tariff quotes
We calculated the average time from start to stop as 44.1 seconds
You can sign up in under 10 minutes.
Our data shows that, for 20% of SMEs, signing up online takes less than 10 minutes.
Here's how we worked it out:
We measured the duration of a big sample of online user journeys from 1/6/26 to 16/7/26
The timer started when a user reached the quote page, before putting in any details
The timer stopped when they reached the success page, meaning the sign-up was complete
We calculated that 20% of SMEs did the whole process within 10 minutes
We give customers award-winning service.
Octopus Energy has won loads of awards for customer service. In fact, we're the UK's most awarded energy supplier.
Octopus Energy is Britain's biggest supplier, trusted by over 8 million customers.
You can find all the data here.
We show you exactly what goes into your bill
Our bills are itemised, so you can see how much of the cost comes from usage and other charges.
They also direct our customers to these even more detailed explanations, if they're interested.
1 in 3 small businesses don't realise that energy brokers get paid commission.
This is based on a May 2026 YouGov survey with 1034 UK SMEs.
'Small businesses' refers to the micro-business segment, which represents c.95% of total UK SME businesses (source: UK Parliament).
We lobbied the government to regulate brokers and now they're doing it.
Check out our campaigns for a better broker system, including the success we've had so far.
