Finance

Octopus Energy overtakes British Gas as UK’s largest energy supplier

Published by Global Banking & Finance Review

Posted on January 17, 2025

1 min read

· Last updated: January 27, 2026

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LONDON (Reuters) - Britain’s Octopus Energy has become the country’s largest energy supplier by market share, it said on Friday, citing data from consultancy Cornwall Insights. The data shows that

Octopus Energy Surpasses British Gas as UK's Top Supplier

LONDON (Reuters) - Britain’s Octopus Energy has become the country’s largest energy supplier by market share, it said on Friday, citing data from consultancy Cornwall Insights.

The data shows that Octopus Energy, which was launched nine years ago, has overtaken Centrica’s British Gas which had been the country’s largest energy supplier for the past 20 years.

“Just nine years after launching to the market, Octopus Energy has become the UK’s largest energy supplier, providing energy to more accounts than any other business,” Octopus Energy said in a statement.

Data compiled by Cornwall Insights showed Octopus serves 12.9 million households, giving it a 23.7% market share, compared with the next biggest supplier, which is British Gas, with a 23.1% share.

Centrica declined to comment on the data.

(Reporting By Susanna Twidale; editing by Nina Chestney)

Key Takeaways

  • Octopus Energy is now the UK's largest energy supplier.
  • Octopus Energy has a 23.7% market share.
  • British Gas has been overtaken after 20 years.
  • Cornwall Insights provided the market data.
  • Centrica declined to comment on the data.

Frequently Asked Questions

What is the main topic?
The article discusses Octopus Energy becoming the UK's largest energy supplier, surpassing British Gas.
How many households does Octopus Energy serve?
Octopus Energy serves 12.9 million households.
What market share does British Gas hold?
British Gas holds a 23.1% market share.

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