Octopus Energy — Tariffs, Reviews, Contact & Customer Service (UK 2026)

Q: How do I switch to Octopus Energy?

Switching to Octopus Energy takes about five working days under the new Faster Switching service, and your supply is never interrupted. Sign up online with your address, postcode and a recent meter reading. Octopus Energy will arrange the transfer with your current supplier, including the final meter reading and the closing bill.

Q: Are there exit fees on Octopus Energy tariffs?

Most UK fixed-term tariffs include an exit fee (typically £25-£75 per fuel) if you switch before the contract ends. You can switch without an exit fee in the last 49 days of your contract. Variable tariffs (including the default tariff capped by the Energy Price Cap) have no exit fees.

Q: How do I contact Octopus Energy customer service?

You can reach Octopus Energy on 0808 164 1088, Mon-Thu 9 a.m. to 5 p.m.; Fri 9 a.m. to 4 p.m.. For a full breakdown of phone lines (emergency, prepayment, HomeCare, bereavement, Welsh, Relay UK), see the Octopus Energy contact page.

Founded

2015

Years on the UK market

Customers

Around 7.4 million UK households

Households served

Employees

Around 8,000 in the UK

Workforce size

Revenue

GBP 13.7 billion (FY 2024/25)

Most recent annual

About

Who is Octopus Energy?

Registered as Octopus Energy Limited, Octopus Energy uses this legal name for Ofgem licence filings, contracts and any formal communications. The trading name customers see on bills is the shorter, more recognisable form.

The company is headquartered in London (Soho), where it runs its senior management, customer operations and regulatory liaison with Ofgem.

Octopus Energy was established in 2015. A longer track record means more years operating under Ofgem rules and a wider history of customer feedback, billing systems and regulatory interactions.

Octopus Energy is part of the Octopus Energy Group group, which provides shared governance, financial backing and a broader pool of expertise in trading, hedging and regulatory work.

The company is regulated by Ofgem, the UK's energy regulator, and its complaint handling falls under the Energy Ombudsman alternative dispute resolution scheme.

Who owns Octopus?

CEO: Greg Jackson (founder)
Ownership: Privately owned
Listed: No (privately held; minority stakes held by Generation Investment Management, CPP Investments, Origin Energy and Tokyo Gas)
Parent: Octopus Energy Group
Holders: Octopus Energy Group, with minority investors including Generation Investment Management (Al Gore), CPP Investments, Origin Energy and Tokyo Gas. Founded by Greg Jackson within Octopus Group (founded by Simon Rogerson an...

Fuel mix

Octopus Energy electricity fuel mix (2024/25)

Octopus Energy declares 100% renewable electricity in its annual Fuel Mix Disclosure - predominantly UK onshore wind, offshore wind, solar and a small hydro component, REGO-backed across the full customer book. Super Green Octopus customers additionally receive carbon-offset gas. The figures are independently audited and submitted to Ofgem each year.

Renewable 100%
Nuclear 0%
Natural gas 0%
Coal 0%
Other 0%

Current tariffs

Octopus Energy tariffs: as of 14 May 2026

Octopus Energy is a fully Ofgem-licensed domestic supplier, so its Flexible Octopus standard variable tariff is capped quarterly by the Ofgem Energy Price Cap. Fixed and time-of-use tariffs (Octopus 12M Fixed, Octopus Tracker, Octopus Agile, Octopus Go, Intelligent Octopus Go, Cosy Octopus and the Outgoing export tariffs) sit outside the cap and can be cheaper or more expensive than the Flex headline rate depending on wholesale prices. Rates below are the typical single-rate Midlands values for direct debit, excluding VAT, taken from the live octopus.energy/our-tariffs price sheet.

Octopus Energy domestic and business tariff unit rates as of 14 May 2026
Tariff	Type	Unit rate	Standing
Flexible Octopus The default tariff every new and migrated customer lands on. Capped quarterly by the Ofgem Energy Price Cap, no fixed term and no exit fee. 100% renewable electricity (REGO-backed)... Term: No fixed term · no exit fee	Variable	5.74 p / kWh	32.00 p/day
Octopus 12M Fixed Standard 12-month fixed-price tariff. Locks in the unit rate and standing charge for a full year on both fuels. No exit fee, paperless billing only, available to new and existing c... Term: 12 months · no exit fee	Fixed	5.45 p / kWh	32.00 p/day
Octopus Tracker Tracker tariff that reprices the electricity and gas unit rates every day, following the wholesale market plus a fixed margin. Designed for engaged smart-meter households happy to... Term: 12 months, no exit fee · no exit fee	Tracker · daily wholesale	4.85 p / kWh	32.00 p/day
Octopus Agile Half-hourly variable-price tariff for engaged smart-meter customers. Electricity unit rate refreshes every 30 minutes against the day-ahead wholesale market, capped at 100 p/kWh. G... Term: Rolling, no exit fee · no exit fee	Agile · half-hourly wholesale	5.74 p / kWh	32.00 p/day
Octopus Go Two-rate EV tariff for households with a SMETS2 smart meter and an electric vehicle. Five-hour cheap window of 8.5 p/kWh from 00:30 to 05:30 covers home charging; the daytime peak... Term: 12 months · no exit fee	Fixed · EV time-of-use	5.74 p / kWh	32.00 p/day
Intelligent Octopus Go Smart-charging EV tariff that controls the car or home charger directly via the Octopus Energy app. Cheap rate of 7.0 p/kWh runs from 23:30 to 05:30 by default, and Octopus also ch... Term: 12 months · no exit fee	Fixed · smart EV charging	5.74 p / kWh	32.00 p/day
Cosy Octopus Three-rate heat-pump tariff. Two cheap windows (04:00 to 07:00 and 13:00 to 16:00) at around 13 p/kWh let an air-source or ground-source heat pump pre-heat the home thermal mass; a... Term: 12 months · no exit fee	Fixed · heat pump	5.74 p / kWh	32.00 p/day
Octopus Saver Sessions Free opt-in scheme that pays Octopus customers OctoPoints (cash-equivalent) to cut electricity use during one-hour Demand Flexibility Service events called by National Grid ESO at... Term: Add-on to any Octopus tariff · no exit fee	Rewards · DFS opt-in	Per host tariff p / kWh	None
Outgoing Octopus Fixed Smart Export Guarantee (SEG) tariff: Octopus pays a flat rate for every kWh of solar electricity you export to the grid. Available only to import customers who already have a smart... Term: Rolling, no fixed term · no exit fee	Export · solar buy-back	p / kWh	None
Outgoing Octopus Agile Half-hourly export tariff that pays a variable rate following the day-ahead wholesale market. Rates can briefly exceed 30 p/kWh during the late-afternoon peak in summer, which suit... Term: Rolling, no fixed term · no exit fee	Export · half-hourly buy-back	p / kWh	None

Open the full Octopus tariffs page

Regulator

Who regulates Octopus?

Independent watchdog responsible for licences, price approvals and customer-protection rules.

Licence: Electricity supply licence and gas supply licence held by Octopus Energy Limited under the Gas Act 1986 and Electricity Act 1989.
Complaints escalation (ADR): Energy Ombudsman
Companies House: 09263424

Timeline

Octopus Energy — key dates

A short timeline of the Octopus Energy brand — founding, milestones, regulatory events.

2015
Octopus Energy is founded in London by Greg Jackson as a subsidiary of Octopus Group. The early product is a single tariff and a Kraken proof-of-concept billing system written in-house.
2018
Ofgem appoints Octopus Supplier of Last Resort for Iresa Energy customers (around 100,000 households). Octopus also acquires Affect Energy and partners with M&S Energy to take over its supply book.
2019
Octopus acquires Co-op Energy's 300,000 customers (including the former GB Energy and Flow Energy accounts) and absorbs Engie's UK domestic customer base.
2020
Octopus is named the only Which? Recommended Provider for the fourth consecutive year. Customer count passes 1.5 million UK households.
2021
Ofgem appoints Octopus Supplier of Last Resort for Avro Energy's ~580,000 customers during the wholesale-gas crisis. The Kraken platform is licensed to Origin Energy in Australia and Tokyo Gas in Japan.
2022
Octopus takes over Bulb Energy's ~1.5 million customers under a special administration regime, becoming one of the three largest UK suppliers. Customer count passes 4.5 million.
2024
Octopus Energy passes British Gas to become the largest UK domestic energy supplier by customer count, with the Kraken platform now serving more than 60 million accounts globally across the UK, US, Australia, Japan, France, Spain, Italy, Germany and New Zealand.
2026
Octopus serves around 7.4 million UK households on a full line-up of fixed, tracker, agile, EV, heat-pump and export tariffs, runs Octopus Energy Generation as one of the largest renewable-energy investors in Europe, and operates Octopus Electroverse for EV public charging.

Where the energy comes from

Octopus Energy generation portfolio

Octopus Energy Generation is the asset-management arm of Octopus Energy Group and one of the largest renewable-energy investors in Europe, with around 3.5 GW of operational and pipeline capacity at the end of 2025. The portfolio is dominated by UK and European onshore wind, solar PV and battery storage. Power Purchase Agreements (PPAs) between Octopus Energy Generation and Octopus Energy supply provide most of the renewable backing behind the 100% renewable customer declaration.

~3.5 GW

Renewable capacity

Operational and pipeline

~330

Renewable assets

Across the UK and Europe

GBP 7bn+

AUM

Renewable assets under management

15+

Countries

Generation invested in or PPAs signed

Octopus Energy owned generation assets and partner generators
Asset	Technology	Location	Capacity
Drone Hill Wind Farm	Onshore wind	Berwickshire, Scotland	28.6 MW (13 turbines)
Calmsden Solar Farm	Solar PV	Gloucestershire, England	5.0 MW
Tirgan Wind Farm	Onshore wind	County Mayo, Ireland	15.0 MW
Hill of Towie Wind Farm	Onshore wind	Moray, Scotland	48.3 MW (21 turbines)
Welbeck Solar Farm	Solar PV	Nottinghamshire, England	6.4 MW
Bicker Fen Battery Storage	Battery storage	Lincolnshire, England	50 MW / 100 MWh
Various community wind sites	Onshore wind	UK and Europe	Multiple sites under the Fan Club tariff

Capacity figures are operational nameplate capacity. The Octopus Energy Generation portfolio extends well beyond the assets listed above; the table is a representative sample of UK and Irish onshore wind, solar PV and battery storage holdings as published in the most recent investor disclosures.

Recognition

Octopus Energy awards & accreditations

Independent badges that tell you whether a supplier walks the talk on price, service and sustainability.

Which? Recommended Provider

2018-2024

Named Which? Recommended Provider for energy in seven consecutive years - the only UK supplier to hold the badge that long.

uSwitch Energy Awards - Supplier of the Year

2018-2024

Six-time winner of the uSwitch Energy Awards Supplier of the Year title, plus repeated wins for Best App, Best Customer Service and Best Renewable Tariff.

Citizens Advice star rating

2024/25

Top of the Citizens Advice quarterly supplier-performance table for several recent quarters, scoring above 4.0 of 5 across complaint handling, customer service, billing and switching.

B Corp certification

2023

Certified B Corporation, recognising independent verification of social and environmental performance, transparency and accountability standards.

King's Award for Enterprise (Innovation)

2023

Awarded the King's Award for Enterprise in the Innovation category for the Kraken customer platform and the Agile half-hourly tariff.

Trustpilot Excellent (4.8)

Live

Live Trustpilot score of around 4.8 of 5 across roughly 280,000 published reviews - one of the highest UK supplier scores by both rating and volume.

Customer service

How to reach Octopus Energy in 30 seconds

The lines you actually need on speed-dial. Every other line (Welsh, Relay UK, business switching, bereavement) is on the full contact page.

General enquiries

0808 164 1088

Mon-Thu 9-5; Fri 9-4

Email Octopus

[email protected]

Reply within 24 hours, often same day

In-app live chat

Octopus app

Fastest channel for tariff and billing changes

Gas emergency (24/7, free)

0800 111 999

National Gas Emergency line

Open the full Octopus contact directory

Customer portal

Log in to My Octopus Account

Your Octopus Energy online account, view bills, submit meter readings, switch tariffs and manage your direct debit.

My Octopus Account

The web portal that holds your Octopus Energy account: bills, meter readings, tariff changes, paperless settings.

What you can do once logged in

View and download every Octopus bill (PDF) and the underlying half-hourly meter data
Submit meter readings (manual entry or photo capture for traditional meters)
Switch between Octopus tariffs (Flexible, 12M Fixed, Tracker, Agile, Go, Intelligent Go, Cosy, Outgoing) in one tap
Change the direct-debit amount or the payment date directly in-app
Run Saver Sessions during Demand Flexibility Service events and earn OctoPoints
Apply the OctoPoints balance against the next bill, or convert to cash (PayPal / bank transfer)
Manage Outgoing Octopus solar export and view exported kWh in real time
Refer-a-friend: earn GBP 50 of bill credit per successful referral, no cap

Open My Octopus Account Sign up

Trouble logging in?

Forgotten password: Reset it online, you’ll receive an email link.
Help centre: Browse FAQs & account guides
Locked out / no email access: Call 0808 164 1088, Mon-Thu 9 a.m. to 5 p.m.; Fri 9 a.m. to 4 p.m.

Mobile app

A native mobile app is available for Octopus Energy.

Common questions

Octopus Energy — frequently asked questions

Octopus Energy is regulated by Ofgem and operates under a standard domestic-supply licence. Whether it is the right supplier for your household depends on your unit rate, standing charge, customer-service rating and any add-on services (HomeCare, Warm Home Discount eligibility). Always quote your annual kWh consumption when comparing prices — the headline rate alone does not predict your bill.

Switching to Octopus Energy takes about five working days under the new Faster Switching service, and your supply is never interrupted. Sign up online with your address, postcode and a recent meter reading. Octopus Energy will arrange the transfer with your current supplier, including the final meter reading and the closing bill.

The UK grid is supplied by a mix of gas, nuclear, wind, solar, biomass and imports. Octopus Energy declares its fuel mix annually under Ofgem rules — see the fuel-mix section above for the current figures. Some tariffs are sold as 'green' or '100% renewable', which means the supplier matches your annual consumption with renewable electricity certificates (REGOs) rather than physically delivering renewable electrons to your home.

Most UK fixed-term tariffs include an exit fee (typically £25-£75 per fuel) if you switch before the contract ends. You can switch without an exit fee in the last 49 days of your contract. Variable tariffs (including the default tariff capped by the Energy Price Cap) have no exit fees.

You can reach Octopus Energy on 0808 164 1088, Mon-Thu 9 a.m. to 5 p.m.; Fri 9 a.m. to 4 p.m.. For a full breakdown of phone lines (emergency, prepayment, HomeCare, bereavement, Welsh, Relay UK), see the Octopus Energy contact page.

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