A Comprehensive Guide to Octopus Energy Tariffs and Services
Since its arrival on the UK energy scene in 2016, Octopus Energy has rapidly transformed from a disruptive newcomer into a major force in the domestic energy market. With a strong focus on renewable energy, customer service, and technological innovation, it has attracted millions of customers. This guide will explore everything you need to know about Octopus Energy, from its diverse range of tariffs to its award-winning customer support.
1. Who is Octopus Energy?
Octopus Energy has established itself as one of the UK's largest energy suppliers, now serving around 7.5 million UK accounts after absorbing Shell Energy in 2024 and Bulb in 2022. Its significant growth has been fuelled by a combination of attracting customers with competitive pricing and a fresh approach, as well as acquiring the customer bases of other suppliers exiting the market.
The company's philosophy is built on using technology to create a more efficient and customer-friendly experience, while championing the transition to a greener energy system. This approach has earned them numerous accolades for customer satisfaction and has positioned them as a leader in the renewable energy sector.
2. Energy Price Cap Context (2026)
It's worth understanding how Octopus's tariffs sit relative to the wider market. The Ofgem price cap is rising to £1,862 per year from 1 July 2026, and this increase applies broadly across the industry to standard variable tariffs, including Octopus's own Flexible Octopus. Against this backdrop, Octopus's 12-month fixed deal at around £1,632 per year offers a degree of price certainty, whilst tariffs such as Tracker and Agile can offer potentially lower bills, but with exposure to wholesale volatility. These figures are based on Ofgem's typical domestic consumption values and will vary depending on your usage, location, and payment method.
3. A Deep Dive into Octopus Energy Tariffs
Octopus offers a wide variety of tariffs designed to suit different lifestyles and needs. Unlike many suppliers who offer a very limited selection, Octopus provides options for standard users, tech-savvy consumers, electric vehicle owners, and households with solar panels, batteries, or heat pumps. While the Big Six typically offer just fixed or variable rates, Octopus gives customers around seven distinct tariff options, each targeting a specific use case.
Standard and Fixed Tariffs
For customers who prefer simplicity and predictability, Octopus provides standard tariff options.
- Flexible Octopus: This is their standard variable tariff and is what most new customers start on. Unit rates and standing charges follow the Ofgem price cap, typically at or slightly below the cap level, with no exit fees and no lock-in, meaning you can switch to another tariff or supplier at any time. It's best suited to households who want simplicity and don't yet have an EV, solar, battery, or heat pump.
- Octopus 12M Fixed: For those who want to lock in their energy prices, a fixed tariff provides certainty. Your unit rates and standing charges are fixed for a 12-month period, protecting you from any price increases during that time, and as of mid-2026 this tariff has been priced below the level the standard variable rate is rising to. This is an excellent option for households that want to budget their energy costs accurately for the year ahead.
Innovative Smart Tariffs
These tariffs require a functioning smart meter and are designed for customers who want to engage more actively with their energy consumption to save money. It's worth noting that in March 2026, Octopus changed the shape of several smart tariffs: Go, Intelligent Go and Cosy moved away from open-ended variable pricing onto fixed-term contracts, whilst Flux stopped accepting new customers. Flexible, Agile and Tracker, however, remain variable tariffs with no exit fees, and you can still switch freely between them without penalty.
- Octopus Tracker: This tariff still follows daily wholesale rates, with the price you pay for gas and electricity changing each day based on the previous day's market rate. While this can lead to significant savings when wholesale prices are low, it also carries the risk of higher bills when market prices spike. It is not protected by the Ofgem price cap, but Octopus implements its own cap to prevent extreme costs.
- Agile Octopus: Taking dynamic pricing a step further, Agile is a time-of-use electricity tariff where prices update every half hour, with today's and tomorrow's rates published daily after 4pm. Rates vary from negative, where you get paid to use electricity, to over 30p/kWh during peak demand. It was the UK's first mainstream tariff to pass wholesale prices through to customers in this way, and it includes a £1/kWh cap to protect against extreme price spikes. A peak-time uplift, typically between 4pm and 7pm, can make those slots more expensive than the average rate. It works best for households that can shift usage away from the evening peak, such as those with EV charging, home batteries, or smart home automation systems like Home Assistant. The average Agile customer reportedly saved £440 in 2023 compared to a standard tariff, though actual savings depend heavily on individual usage patterns and how wholesale prices behave.
Specialist Tariffs for Modern Homes
- Intelligent Octopus Go: Specifically created for electric vehicle (EV) drivers, this tariff has historically offered a cheap overnight window for charging, and following the March 2026 changes it now runs as a fixed-term contract. It typically provides around six hours of cheap electricity, from 23:30 to 05:30, at roughly 7p per kWh, with the window able to extend slightly beyond this if a compatible EV or charger is plugged in and participating in smart charging. It can also allow your EV to participate in grid flexibility events, where Octopus may shift the timing of your charging in exchange for bill credits, provided you have a compatible smart charger and smart meter. A smart meter and compatible vehicle/charger set-up are required to access this tariff, and it remains one of the cheapest dedicated EV off-peak rates on the market.
- Octopus Go: The simpler, non-intelligent version of the EV tariff. This offers around four hours of super-cheap electricity overnight, typically from 00:30 to 05:30, at roughly 7.5p per kWh, with the rest of the day charged at the standard rate of around 27p per kWh. It's aimed at EV drivers charging a moderate amount overnight and doesn't require the smart-charger integrations that Intelligent Go relies on.
- Cosy Octopus: Designed primarily for households with heat pumps, but also useful for homes with solar, batteries, and EVs that want to run everything efficiently. Cosy Octopus offers an off-peak rate three times a day, from 4am to 7am, 1pm to 4pm, and 10pm to midnight, which is around 50% cheaper than the region's Flexible Octopus rate. The live Cosy tariff retains these three "Cosy Hours" windows, alongside a peak period between 4pm and 7pm. Like Go and Intelligent Go, Cosy moved onto a fixed-term contract structure in March 2026.
- Octopus Flux and Outgoing tariffs: For households with solar panels and a home battery, Flux was designed as a three-rate tariff with higher export rates during peak demand periods and cheaper import rates overnight, so a battery could charge cheaply overnight and from solar, then export during the evening peak when Flux pays more. However, standard Flux was closed to new customers in March 2026, though existing customers may remain on it. For exporting excess solar generation, Octopus offers Outgoing Octopus and Outgoing Agile under the Smart Export Guarantee (SEG) scheme, though the flat Outgoing rate changed in March 2026, so export value should always be checked separately from any import savings. For homes with solar and a battery but no EV, Flux (where still available) may suit, whereas homes with solar, battery and an EV often find Intelligent Go's EV savings outweigh Flux's export benefits.
- Economy 7: While not an innovative tariff itself, Octopus supports customers with traditional Economy 7 meters. These meters provide a cheaper rate for electricity during a seven-hour overnight period, which is beneficial for homes with electric storage heaters or those who can run large appliances at night.
Choosing the Right Tariff for Your Home
With so many options, picking the right tariff depends largely on what equipment your home has. As a general rule of thumb: an EV with no solar suits Intelligent Octopus Go; solar and battery with no EV suits Flux where available; solar, battery and an EV usually suits Intelligent Go; a heat pump alone suits Cosy or Heat Pump Tracker depending on flexibility; a heat pump combined with solar, battery and an EV is well served by Cosy; and tech-savvy households comfortable with automated load-shifting tend to do best on Agile. It's generally sensible to get any planned solar, battery, or heat pump installation sorted first, then switch to the Octopus tariff that best matches the resulting set-up.
4. Commitment to Green Energy
A core part of Octopus Energy's identity is its commitment to sustainability. All electricity tariffs are backed by 100% renewable sources, such as wind, solar, and hydro power. This means that for every unit of electricity a customer uses, Octopus ensures a corresponding unit of green energy is generated and supplied to the grid.
For gas, which is a fossil fuel, Octopus offers a "Supergreen" upgrade. By paying a small extra amount on your bill, the company will offset the carbon emissions from your gas usage through supporting verified carbon reduction projects around the world.
5. Customer Service and Reviews
Octopus Energy consistently receives outstanding feedback from its customers. On review platforms like Trustpilot, it maintains an exceptionally high rating from a very large volume of reviews, with the vast majority being positive. Customers frequently praise the company's responsive UK-based support team, clear communication, and user-friendly website and app.
This commitment to service has also been recognised in industry awards, where Octopus often wins categories for Overall Customer Satisfaction, Best Customer Service, and Value for Money.
6. Managing Your Account and Getting Support
Interacting with Octopus Energy is designed to be straightforward.
- Digital Tools: The Octopus app and online account portal allow you to manage every aspect of your account. You can submit meter readings, view your usage history, analyse your consumption, change your payment details, and access your bills and statements at any time. For customers on smart tariffs such as Agile, the app also displays upcoming half-hourly rates so you can plan your usage around the cheapest periods.
- Smart Meters: Octopus is actively rolling out smart meters to its customers. You can register your interest online, and they will notify you when installation appointments are available in your area. Having a smart meter is essential for accessing their innovative tariffs, including Agile, Tracker, Cosy, Go, and Intelligent Octopus Go.
- Contacting Support: If you need to speak to a person, you can reach their customer service team via:
- Phone: 0808 164 1088 (Monday-Thursday 9am-5pm, Friday 9am-4pm)
- Email: hello@octopus.energy
7. Other Services and Options
- Dual Fuel: For maximum simplicity, most customers opt for a dual fuel plan, receiving both gas and electricity from Octopus on a single, consolidated bill. Electricity-only plans are also available. However, Octopus does not offer gas-only tariffs for domestic households.
- Business Energy: Octopus extends its services to the business sector, offering a range of tariffs that mirror their domestic offerings but are tailored for commercial usage. These also come with 100% renewable electricity as standard.
- Referral Scheme: Octopus operates a referral programme, where both new and existing customers can receive bill credit for successful referrals, making it worth checking for a referral code before signing up.
8. Is Switching to Octopus Energy Right for You?
Choosing an energy supplier is a personal decision based on your priorities. Octopus Energy appeals to a broad range of consumers, particularly those who value:
- Green Credentials: A genuine commitment to 100% renewable electricity.
- Excellent Customer Service: A proven track record of keeping customers happy.
- Technological Innovation: Access to smart tariffs that can lead to significant savings for engaged users, particularly those with EVs, solar panels, batteries, or heat pumps.
- Fair and Transparent Pricing: A range of clear and competitive tariffs, including fixed-rate options that offer protection against the rising price cap.
It's worth bearing in mind that the smart-tariff landscape has shifted in 2026, with several tariffs moving from open-ended to fixed-term contracts and Flux closing to new customers, so it's sensible to check the live terms on the Octopus website before signing up, as rates, contract lengths, and availability can change.
The process of switching is handled entirely by Octopus once you sign up, and your energy supply will not be interrupted. With the industry regulated by Ofgem, you are always protected by a safety net, ensuring a secure and simple transition.
