Most pages about switching energy suppliers will tell you to “act now” or “unlock savings”. This isn’t one of those. If you’re thinking about whether to switch to Octopus Energy in 2026, the honest answer is that for most UK households it’s a sensible decision. Not because of one dramatic saving, but because of the combination of customer service, smart tariff options, the £50 referral credit, and a supplier that reliably doesn’t annoy you.
If that’s all you needed to hear, you can switch to Octopus Energy via their website.
If you want a bit more information before you commit, read on. We’ll cover whether Octopus is right for your situation, what you actually get when you switch, how Octopus compares to other suppliers in 2026, and the step-by-step process for moving across.
Is Octopus Energy worth switching to?
For most UK households in 2026, yes. Octopus Energy is worth switching to if you want a supplier with competitive tariffs, highly rated customer service, useful smart tariff options, and a simpler app-based experience than many traditional energy companies.
You’ll benefit most by switching to Octopus if you’re sitting on a Big Six standard variable tariff (British Gas, EDF, E.ON Next, OVO, Scottish Power) and haven’t shopped around in years, if you’ve had genuinely bad customer service experiences, if you have or are planning an EV, solar panels, or a heat pump, or if you just want a supplier that handles your account quietly.
Switch through a referral link and both you and the referrer get £50 credit. That’s the offer. No countdown timer, no special “spring deal”. Just £50, applied automatically after your first direct debit clears.
Why people are switching to Octopus in 2026
Octopus has spent the last few years quietly becoming the default answer to “who should I switch to?”
As of March 2026, Octopus serves 8 million UK households, putting it ahead of British Gas as the country’s largest domestic supplier. That’s the first time the top spot has changed hands in the retail energy market since it opened for competition in the 1990s. They picked up the bulk of Shell Energy’s UK domestic customers in late 2023 (around 1.3 million accounts), absorbed Bulb’s customers through the supplier of last resort process before that, and have led the switching market for several years running.
Scale alone doesn’t tell you whether a supplier is any good. Octopus’s case is that it’s grown without the usual deterioration in service. Which? has named Octopus a Recommended Provider for nine years running, the only energy supplier ever to hit that mark. Trustpilot sits at 4.8 out of 5 across roughly 794,000 reviews. They consistently come top in Uswitch’s customer satisfaction surveys.
The other thing that convinces consumers to switch to Octopus is their tariff range. Octopus didn’t invent time-of-use pricing, but they’ve built more of it into the mainstream than anyone else. If you have an EV, a heat pump, solar panels with a battery, or you’re just willing to shift some usage to cheaper windows, there’s almost certainly an Octopus tariff that fits.
Worth being honest about the trade-offs. Which?’s 2026 survey gave Octopus three stars for value for money rather than four or five. That isn’t unusual: no large supplier scored above three stars on that measure, and Octopus’s prices are broadly in line with the market rather than the absolute cheapest on any given day. The win is the package, not the headline rate.
What you actually get when you switch to Octopus
- £50 referral credit when you switch through a friend’s affiliate link. Applied automatically after your first direct debit clears. No code to type.
- Access to the full Octopus tariff range once your account is set up. You’ll start on a standard tariff (usually Flexible or a 12-month Fixed) and can move to smart tariffs like Tracker, Agile, Cosy or Intelligent Octopus Go once eligible.
- 100% carbon-zero electricity as standard. Matched by REGO certificates from British generators.
- A genuinely good app and online account. Sounds like a small thing until you’ve used a Big Six app for five years.
- Smart meter installation if you want one. Not pushed if you don’t.
- SEG export tariff access for solar owners. Octopus Outgoing is one of the more competitive Smart Export Guarantee options on the market.
- No exit fees on the standard tariffs (Flexible Octopus, Agile, Tracker) as of 2026. Some smart tariffs as well as Octopus 12 Month Fixed do now carry small exit fees following the March 2026 changes. More below.
That’s the actual offer. £50 up front, access to the most interesting tariff range in the UK market, and a supplier that mostly stays out of your way.
Octopus tariffs at a glance
| Tariff | Type | Best for |
|---|---|---|
| Flexible Octopus | Standard variable, tracks the Ofgem price cap | Most new switchers as a starting point. No smart meter needed, no exit fees. |
| 12-Month Fixed | Fixed unit rates for a year | Households that want budget certainty. |
| Octopus Tracker | Daily wholesale-linked rate | Households who want wholesale exposure without managing half-hourly slots. Needs a smart meter. |
| Agile Octopus | Half-hourly wholesale pricing | Tech-engaged households who can shift usage actively, especially with batteries. |
| Octopus Go | Standard cheap five-hour overnight window | EV drivers who want simple overnight charging without app dependencies. |
| Intelligent Octopus Go | Smart EV charging with extended cheap windows | EV drivers with a compatible car or charger. 6-month fix with £25 exit fee per fuel since March 2026. |
| Cosy Octopus | Three off-peak windows per day | Heat pump and electric heating households. Also a 6-month fix with £25 exit fee since March 2026. |
| Outgoing Octopus / Agile | SEG export tariffs | Solar panel owners exporting to the grid. |
The smart tariffs have always been the differentiator, and they still are. The Flexible and Fixed options are competitive but not market-leading on price alone. Where Octopus genuinely pulls ahead is when your household uses electricity in a shape that suits time-of-use pricing.
A few notes on the recent changes as of May 2026. Octopus reintroduced exit fees on a few of their smart tariffs in March 2026, citing wholesale price volatility. The off-peak windows and rate structures of those tariffs are unchanged. Octopus Flux, the solar and battery import-export tariff, was also closed to new customers in March 2026 as well. Existing Flux customers can stay on it for now.
As of May 2026, Octopus has started removing exit fees from certain tariffs again (including Intelligent Octopus Go). Tariff terms move around, so always check the current setup on Octopus’s site before signing up.
How Octopus compares to other suppliers in 2026
The comparison most people care about is Octopus versus the legacy Big Six. That one isn’t close.
| Octopus | Typical Big Six | |
|---|---|---|
| Which? 2026 status | Recommended Provider (9 years running) | British Gas, EDF, Scottish Power scored among the lowest |
| Trustpilot score | 4.8 / 5 across c.794,000 reviews | Mostly 1.5 to 3.5 / 5 |
| Smart tariff range | Agile, Tracker, Cosy, Go, Intelligent Go, Outgoing | Mostly thin; some have EV tariffs only |
| Exit fees | None on Flexible, Agile, Tracker. £25/fuel on Cosy & Intelligent Go since March 2026. | Often £50 to £150 per fuel on fixed deals |
| Renewable electricity | 100% (REGO-matched) | Varies by supplier and tariff |
| App quality | Strong | Mixed, often poor |
| EV / solar / heat pump support | Built around it | Patchy |
Octopus isn’t always the cheapest. That’s the truth. What it offers is the best combination of price, service, tariff innovation, app quality, and stability that’s currently available at scale. If you’re willing to do regular shopping around and don’t care about the rest, you can sometimes save a few pounds elsewhere. Most people don’t, so the Octopus package wins.
The Citizens Advice supplier performance league table is a good cross-reference if you want a third opinion.
Step-by-step: how to switch to Octopus Energy
Switching energy supplier used to be a 21-day ordeal. It isn’t anymore. Most switches to Octopus complete in around three working days, sometimes as little as two, under the Energy Switch Guarantee.
Here’s how it works:
- Use a referral link. Visit Octopus through a friend or family member’s referral link. This tags the £50 credit to your account automatically. No code to type.
- Enter your postcode and a rough idea of usage. You don’t need an exact figure. A recent bill helps but isn’t essential.
- Pick a starter tariff. Usually Flexible Octopus or 12-Month Fixed. You can move to smart tariffs once you’re set up.
- Enter your bank details and confirm. Takes maybe five minutes.
- Octopus contacts your old supplier. You don’t need to do anything. Your old supplier will send you a final bill and refund any credit balance within six weeks.
- Your supply switches. Usually within five working days. Same pipes, same wires, just different billing.
- £50 credit lands. Within two to four weeks of your first direct debit being taken.
A few practical notes:
- You have a 14-day cooling-off period from the day after you sign up. Cancel during that window and the switch stops.
- If something goes wrong and the switch takes longer than five working days, you’re entitled to £30 compensation from Octopus under Ofgem’s Guaranteed Standards of Performance.
- You don’t need to phone your old supplier. They’ll find out from Octopus.
If you want a fuller walkthrough that isn’t Octopus-specific, our how to switch energy supplier guide covers the general process in more detail.
Before you switch: what to check
A quick checklist before you click anything.
- Exit fees on your current tariff. Most standard variable tariffs have no exit fees. Fixed deals often do. The exception: you can switch penalty-free in the last 49 days of any fixed contract.
- Any outstanding balance with your current supplier. If you owe them more than 28 days of bills, they can legally block the switch until it’s paid.
- A final meter reading on the day your switch completes. Smart meters do this automatically.
- Keep your current direct debit running until your final bill from the old supplier clears.
- The Priority Services Register. If you’re on it with your current supplier, you’ll need to re-register with Octopus.
That’s it.
Switching to Octopus for solar owners, EV drivers, and heat pump users
This is where Octopus genuinely pulls ahead of competitors, rather than just matching them on service.
However, most new customers will usually start on Flexible Octopus first. Once your supply has switched over, Octopus needs to check that your smart meters are communicating correctly before you can move onto a smart tariff such as Intelligent Octopus Go, Cosy Octopus, Octopus Flux, Intelligent Octopus Flux, or Outgoing Octopus.
This smart meter check can take a few days. It does not usually mean anything is wrong. Octopus simply needs to confirm that it can receive the data needed to bill you correctly on a time-of-use or export tariff.
EV drivers. Intelligent Octopus Go gives you a cheap whole-home rate overnight, plus bonus cheap charging slots when renewable generation is high. The app handles scheduling automatically once you connect a compatible car or charger. For a wider comparison, see our best EV tariffs guide.
Heat pump households. Cosy Octopus is designed for homes with heat pumps or electric heating. It offers cheaper electricity during set off-peak windows, helping you shift heating and hot water usage away from the most expensive parts of the day.
Solar owners. Outgoing Octopus and Octopus Flux can be strong options for households exporting solar electricity back to the grid. If you already have an export MPAN, switching your export tariff can be quick, often around one working day once everything is ready. If you do not yet have an export MPAN, Octopus may need to request one before your export tariff can be set up, which can take longer, sometimes up to around two weeks.
If you do not have an EV, solar panels or a heat pump, you are still fine on Flexible Octopus or one of Octopus Energy’s fixed tariffs. You just may not get the extra upside that makes Octopus especially attractive for households that can use smart tariffs, export tariffs, or flexible off-peak pricing.
Is there anyone who shouldn’t switch to Octopus?
Yes. A few cases.
If you’re still on a deeply-discounted legacy fixed deal signed before the 2024–2025 wholesale spike, you probably shouldn’t break it. Those tariffs are essentially extinct now and the unit rates are usually well below anything in the current market.
If your real problem is consumption rather than supplier choice, switching won’t fix it. Heating an under-insulated home through a cold British winter costs roughly the same whoever bills you. If your bills feel disproportionate to your usage, start with our why are my energy bills so high diagnostic and the reducing your energy bills guide. Switch after that if it still looks worthwhile.
For everyone else, the case for switching is straightforward.
FAQ
How long does it take to switch to Octopus Energy?
Most switches complete in around three working days from when you sign up, sometimes as little as two. You have a 14-day cooling-off period during which you can cancel.
Will my supply be interrupted when I switch?
No. All UK energy suppliers use the same physical infrastructure: the same pipes, wires, and meters. Only the billing arrangement changes.
Do I need to contact my old supplier?
No. Octopus handles that. Your old supplier will send a final bill within six weeks and refund any credit balance within 14 days of that bill.
Will Octopus install a smart meter automatically?
Not automatically. They’ll offer one if you want it, especially if you’re moving onto a smart tariff that needs it. If you don’t want one, you don’t have to have one.
What happens if I’m in debt with my current supplier?
If you owe more than 28 days of bills, your current supplier can legally block the switch until the debt is cleared. Smaller balances usually transfer with no problem. Citizens Advice has a useful overview at citizensadvice.org.uk.
Can I switch to Octopus if I’m on a prepayment meter?
Yes. Octopus supports both traditional key/card prepayment meters and smart prepayment meters. The referral credit still applies; you may need to contact their team to arrange how it’s credited.
Can I switch back if I change my mind?
Yes, within the 14-day cooling-off period without any cost. After that you can still switch away to another supplier at any time. On Flexible Octopus, Agile, and Tracker there are no exit fees.
Does Octopus charge exit fees?
Not on most tariffs. Flexible Octopus, Agile, and Tracker have no exit fees. Standard 12-month fixed tariffs typically have no exit fees either, though this can change. Cosy and Intelligent Octopus Go now carry a £25 exit fee per fuel during the fixed term, following March 2026 changes.
When does the £50 referral credit arrive?
Within two to four weeks after your switch completes and your first direct debit has been successfully taken. It appears as a £50 credit on your account.
Is Octopus Energy actually the cheapest?
Not always. Octopus’s standard variable tariff usually sits very close to or just below the Ofgem price cap. Some smaller suppliers occasionally beat Octopus on headline unit rates. The case for Octopus is the combination of competitive pricing, customer service, smart tariff access, and the £50 credit, rather than being the lowest price on a given week.