Customer review

I came across Octopus Energy when I was researching my first EV. Nearly every review and guide about electric cars mentioned Octopus and their cheap overnight charging rates. That sent me down a rabbit hole looking into their tariffs, and I ended up switching. I've not looked back.

Pricing

The standard Flexible tariff sits below the Ofgem price cap. Not by a massive amount (around £33/year for a typical household), but the standing charges are noticeably lower too, especially on electricity. Most other large suppliers set their variable tariff right at the cap, so there is a real difference.

Where Octopus really stands out is the smart tariffs. I shifted some of my heavy usage to overnight (dishwasher, washing machine, that sort of thing) and the difference on my bill was noticeable straight away. Paying 9p/kWh instead of 30p for the same electricity just because you run the machine at midnight rather than after tea is a no-brainer once you get into the habit.

If you've got an EV, the Go tariff is brilliant. 9.5p/kWh overnight for charging, or as low as 8.0p on Intelligent Go. Compare that to public chargers or petrol and it's a massive difference. There's a full breakdown of all the tariffs elsewhere on this site if you want the detail.

Customer service

When I've needed to get in touch, I've had proper responses from actual people. The online chat works well too. They've been quick to sort things out whenever I've had a question, which is all you really want from your energy supplier.

They've got a 4.8 star rating on Trustpilot from over 750,000 reviews. For an energy company, that's unheard of.

The app and smart meter

Octopus will install a smart meter for free if you don't have one already. Once that's in, you can see your usage in the app and track what you're spending day by day. It's handy for keeping an eye on things, and it's required if you want to get onto any of the time-of-use tariffs.

Green energy

All Octopus electricity is backed by renewable sources. They own wind and solar farms through Octopus Generation too, so it's not just certificate shuffling. You don't pay extra for it either, it's just included as standard.

Who gets the most out of it

• EV owners get access to Go and Intelligent Go with overnight charging rates of 8.0p–9.5p/kWh.
• Solar and battery owners should look at Agile for export income. Flux was previously the best option here but was closed to new customers in March 2026.
• People who can shift usage to off-peak hours will save the most on tariffs like Agile, where rates follow the wholesale market.
• Everyone else still gets a rate below the price cap and decent customer service. Flexible, Agile and Tracker have no exit fees, so there's nothing to lose by trying it.

Would I recommend it?

Yes. Easily. If you're with one of the big six and you're just paying whatever they charge each quarter without thinking about it, you'd almost certainly be better off with Octopus. The prices are lower, the service is better, and if you've got a smart meter or an EV, the specialist tariffs can save you a lot of money. I've been happy with them and I don't see myself switching away any time soon.

If you do decide to switch, using a referral code gets you £50 credit on your account.