Octopus Energy

Octopus Energy in brief

• Rank: #11 of 100 in UK's Most Powerful 100 Brands 2026; #2 of 6 in Energy & Utilities.
• WCRC Power Score: 69.72 out of 100.
• Founded: 2016, by Greg Jackson, backed by Octopus Group.
• Owner: Octopus Energy Group Limited, London, England.
• Leadership: Greg Jackson, Founder and Chief Executive Officer.
• Latest revenue: £13.7bn revenue (FY2025, year to Apr 2025, +10.1%), group revenue of Octopus Energy Group Limited, as per company filings.

What makes Octopus Energy powerful

Octopus Energy has gone from start-up to the biggest name in British household energy in under a decade. In the year to April 2025 group revenue rose 10% to 13.7 billion pounds, and it served about 10 million customers worldwide, including 7.6 million UK homes. By August 2026 it said it served almost 15 million meter points in Britain, around a quarter of the home energy market on Cornwall Insight's figures, the first supplier to take the top spot from the former incumbents since the market opened in the 1990s.

What sets Octopus apart is technology. Its Kraken platform, used by its own supply businesses and licensed to utilities such as National Grid in the US, had 44.2 million live accounts at April 2025, up 35%, and contracted annual recurring revenue doubled to 422 million pounds. That software edge gives it a story that reaches well beyond the UK energy market.

Kraken ran 44.2 million live energy accounts at 30 April 2025, around 19 million of them for Octopus's own retail businesses.

Why Octopus Energy ranks #11

Octopus Energy is 11th with a WCRC Power Score of 69.72, between the Premier League and Johnnie Walker. Product & innovation is its standout pillar at 74, driven by the Kraken platform and smart tariffs. Sustainability & governance and Digital & financial both score 70, helped by its renewables focus and group revenue of £13.7bn. Positioning & recall and Trust, at 68, are solid but leave it short of the longer-established names above it.

The Achilles' heel

Energy supply is a low-margin business shaped by price caps, wholesale swings and government policy, and Octopus's rapid growth has made it a political target as much as a success story. The planned spin-off of Kraken at a valuation of 8.65 billion dollars will separate the platform from the supplier, so the Octopus brand must prove its edge survives without owning the software outright.

The 2026 story

Octopus Energy's FY25 accounts showed group revenue of 13.7 billion pounds, up 10%, and about 10 million customers. In December 2025 the group announced it would spin out Kraken as an independent company at a valuation of 8.65 billion dollars, with investors including Ontario Teachers' Pension Plan. Founder Greg Jackson remains chief executive and has urged action to make London the first choice for any future Kraken listing.

Pillar profile

Provisional desk scores out of 100, for the WCRC Business Intelligence Unit to validate.

Versus its nearest rivals

Questions people ask

Also featured in

• Most powerful Energy & Utilities brands
• UK's 50 Most Valuable Brands
• UK's Most Trusted Brands
• Most Innovative British Brands
• Fastest-Growing British Brands
• Most powerful brands in England

Key facts

Sources

• Annual report and published financial results of Octopus Energy Group Limited
• Company website, official announcements and press releases
• Published interviews and statements by the leadership
• WCRC Business Intelligence Unit research: consumer sentiment, ratings and reviews, search demand, media and social data