The UK's largest and most innovative energy supplier
Octopus Energy was founded in 2015 and has grown to become the UK's largest domestic energy supplier, serving over 6 million customers. It is part of Octopus Energy Group, operating in Germany, the US, Japan, Australia and New Zealand. Octopus is known for its technology-led approach, innovative time-of-use tariffs, and consistently top-rated customer service.
Standard variable tariff tracking wholesale prices. No exit fees. Good for customers who want simplicity.
Half-hourly pricing that follows the wholesale market. Prices can go negative during high renewable generation — you can get paid to use electricity.
Cheap overnight electricity (typically 7p/kWh) for EV owners between 00:30–05:30. Requires a smart meter.
Unit rates track wholesale energy prices daily. Can be significantly cheaper than the price cap in a falling market.
Cheap rates during mid-morning and late afternoon. Designed for heat pump owners.
For homes with solar panels and batteries. Export, import and storage rates all in one tariff.
Like Octopus Go but the app automatically finds the cheapest windows to charge your EV.
Switching to Octopus is straightforward and fully online. The process takes 17–21 days. Octopus handles communication with your current supplier. Smart meter installation is free and can be booked at any point.
Octopus Energy sources 100% of its electricity from renewable sources backed by REGO certificates. It also invests in renewable generation assets worldwide through Octopus Energy Generation. For maximum green additionality, its Agile tariff rewards customers for using electricity when renewable generation is highest.
Enter your postcode to see live rates and how they stack up in your region.
Compare Tariffs Now →