Octopus Energy Review

Challenger

Octopus Energy is a fast-growing challenger supplier known for 100% renewable electricity, innovative tariffs, and consistently high customer satisfaction ratings. They acquired Bulb Energy customers in 2023.

Founded

2015

Headquarters

London

Customers

5 million

Green Rating

Excellent

Pros

  • 100% renewable electricity as standard
  • Consistently top-rated for customer service
  • Innovative time-of-use tariffs (Agile, Go)
  • Award-winning mobile app

Cons

  • No bundled home services like boiler cover
  • Agile tariff prices can spike during peak demand
  • Relatively new company compared to Big Six

About Octopus Energy

Founded in 2015 by Greg Jackson, Octopus Energy has grown to become one of the UK largest energy suppliers with over 5 million customers. They acquired Bulb Energy customers from administration in 2023, significantly expanding their customer base.

Octopus Energy Tariffs

Octopus offers several innovative tariff types. Their standard Flexible Octopus tariff tracks the Ofgem price cap. Octopus Go is designed for EV owners with cheap overnight rates. Agile Octopus offers half-hourly pricing that follows wholesale market rates, rewarding flexible usage.

Octopus Energy Technology

Octopus built their own technology platform called Kraken, which now powers energy retail operations for other suppliers globally. The platform enables real-time billing, smart tariff management, and automated customer service.

Octopus Energy Renewables

All Octopus electricity is backed by 100% renewable sources. Octopus Generation invests directly in UK wind and solar farms. They also offer the Octopus Energy Fan Club, giving discounts to customers living near their wind turbines.

Areas Served by Octopus Energy

Octopus Energy supplies energy across Great Britain. Compare their plans in these areas:

SW — South West London SE — South East London E — East London N — North London NW — North West London W — West London EC — East Central London WC — West Central London B — Birmingham M — Manchester

Frequently Asked Questions

Is Octopus Energy any good?

Octopus Energy consistently ranks as one of the best UK energy suppliers for customer service. They have won multiple awards from Citizens Advice, Uswitch, and Which? for customer satisfaction, billing accuracy, and complaint handling.

Is Octopus Energy really 100% renewable?

Yes, Octopus Energy matches all electricity supplied to customers with renewable energy certificates (REGOs). They also invest directly in UK wind and solar generation through Octopus Generation.

What is Octopus Agile?

Octopus Agile is a smart tariff where your electricity price changes every 30 minutes based on wholesale market rates. Prices are published a day ahead, allowing you to shift usage to cheaper periods. Prices can occasionally go negative, meaning you get paid to use electricity.

Compare Octopus Energy Plans

See how Octopus Energy compares to other suppliers in your area.

Compare Plans

Octopus Energy official website →

Supplier data sourced from Ofgem and Citizens Advice. Last updated April 2026.

AskUKEnergy is free to use. We may earn a commission if you switch through our links. This never affects the independence of our comparisons. Learn how we make money.