Octopus Energy is the UK's most awarded energy supplier — and the reason millions of households are switching using the Octopus Energy referral offer.
Octopus Energy was founded in 2016 with a mission to make energy fairer, greener, and more affordable for everyone. In less than a decade, it has grown from a startup to the UK's largest energy supplier by customer numbers, with over 7 million households on supply.
The company is built on a proprietary technology platform called Kraken, which powers its customer service, billing, and smart tariff infrastructure. This technology advantage allows Octopus to offer innovative tariffs like Agile Octopus and Intelligent Octopus Go that no traditional supplier can match.
Octopus Energy has been named Which? Recommended Provider for nine consecutive years — the only energy supplier to achieve this. Its Trustpilot rating of 4.8 stars from over 776,000 reviews places it far ahead of any other large UK energy supplier.
Beyond the UK, Octopus Energy has expanded to operate in Germany, France, Spain, Italy, Japan, New Zealand, and the United States — taking its technology and green energy mission global.
Octopus Energy's track record of awards and recognition is unmatched in the UK energy industry.
Named Which? Recommended Provider for 9 consecutive years — the only energy supplier ever to achieve this. Which? tests customer service, value for money, billing accuracy, and complaint handling.
Over 776,000 verified customer reviews with an average 4.8-star rating. The highest Trustpilot rating of any large UK energy supplier — by a significant margin.
One of Europe's leading investors in renewable energy infrastructure. All Octopus electricity tariffs are backed by 100% renewable sources, with Octopus actively investing in wind, solar, and battery storage.
The Kraken technology platform powers Octopus's smart tariffs, real-time billing, and customer service. It's so advanced that other energy suppliers — including E.ON — license it to run their own operations.
The Octopus Energy app is consistently rated among the best utility apps in the UK. Real-time usage tracking, smart tariff controls, bill management, and Octoplus rewards all in one place.
Operating in 8 countries including Germany, France, Spain, Italy, Japan, New Zealand, and the USA. Octopus Energy's mission to make energy fairer and greener is going global.
Switching to Octopus Energy using the referral offer isn't just good for your wallet — it's good for the planet.
Every unit of electricity supplied by Octopus Energy is matched by renewable generation certificates. All tariffs — from Flexible Octopus to Agile — include 100% renewable electricity as standard.
Octopus Energy Generation is one of Europe's largest investors in renewable energy, with a portfolio of wind and solar farms across the UK and Europe. They invest directly in the green energy they sell.
Through smart tariffs like Agile Octopus and Power-Up/Power-Down events, Octopus actively helps balance the electricity grid — reducing the need for fossil fuel peaker plants and wasted renewable energy.