Can a plug-in hybrid use Octopus Go or Intelligent Go?

Yes. Octopus Go's terms explicitly include a plug-in hybrid that you own or have on a long-term lease and charge at the home Octopus supplies. Intelligent Octopus Go also includes plug-in hybrids, but the vehicle must charge primarily at that home and your particular car or charger must support its smart-charging connection. A non-plug-in, sometimes called self-charging, hybrid is a different case: it does not have the home-charging routine these tariffs require.

Eligibility is only the first check. A cheap car-charging rate does not automatically make either tariff cheaper for the rest of your home.

Start with the kind of hybrid you have

A plug-in hybrid, or PHEV, has a battery you can recharge from an external charging point as well as a combustion engine. That external charging is what makes an EV electricity tariff relevant.

With a non-plug-in hybrid, the engine and braking system help replenish the battery. Do not assume the word hybrid on its own qualifies you for Go. Octopus's smart-tariff terms specify a battery electric or plug-in hybrid vehicle, with home charging.

There is no minimum PHEV battery size stated in the Go eligibility clause. Having a smaller battery is not, by itself, a reason to rule Go out. It does change how much electricity you might buy for charging and how long each top-up takes.

Standard Go does not require a particular smart charger

Octopus Go gives the whole home a lower-rate window from 00:30 to 05:30 each night. You arrange the charging schedule rather than asking Octopus to control it.

Octopus says a dedicated home EV charger is not required to join Go. The tariff still needs an eligible vehicle charged at home and a compatible smart meter that Octopus can read half-hourly. That makes Go worth checking when your PHEV does not appear in the Intelligent Go compatibility list.

Tariff eligibility does not certify a socket, cable or circuit as safe for charging. Electrical Safety First's EV guidance recommends a dedicated EV charge point and warns against standard sockets under a prolonged EV charging load. It distinguishes sockets constructed for EV charging from ordinary household sockets. Ask a registered, competent electrician about your exact installation, and follow the vehicle and charging-equipment instructions. Do not treat a tariff's cheap hours as permission to improvise a charging setup.

Intelligent Go needs an actual supported connection

Intelligent Octopus Go schedules charging through a supported car or charger connection. Check the exact model and setup in the supplier's current eligibility flow before buying hardware or switching supplier for that tariff.

PHEV eligibility in the terms is not a promise that every plug-in hybrid model integrates directly. Likewise, a car having its own app does not prove Octopus can control it. If your setup cannot connect, standard Go may be the simpler comparison.

The guaranteed whole-home window is 23:30 to 05:30. Intelligent Go also has a six-hour smart-charging allowance, so a slower charging setup needs its own schedule check rather than an assumption that all requested charging will fit. Read the Charge Cap guidance and check how manual Boost or charging beyond the allowance would be billed.

Do not assume an extra car-charging slot discounts other household use. Confirm the treatment for your tariff with Octopus before shifting appliances or battery charging, then check the corresponding bill periods.

Count electric miles, not every mile the car travels

For a PHEV, total annual mileage is not the same as annual electric driving. Petrol-powered miles do not create home-charging electricity use. Charging at work or elsewhere also changes what passes through your home meter.

Start with the charging electricity you actually expect to buy at home. If you estimate from mileage, use your electric-driving miles and a realistic home-charging share, not the car's total annual miles. Allow for charging losses rather than treating the advertised battery capacity as the energy your meter always records.

Then compare the whole household: electricity inside and outside each tariff's cheap window, standing charges, the fixed term and any exit fees. Use current postcode quotes for Go and Intelligent Go against your existing tariff. A small battery charged frequently may matter more than a bigger battery rarely plugged in; neither tells you the winner without the household figures.

The low-mileage EV guide explains the household break-even trade-off. It is the next step for the cost question, not a substitute for checking PHEV and hardware eligibility first.

Before switching to Octopus

Confirm these points before accepting a quote:

• Your vehicle is a plug-in hybrid and will be charged at the supplied home.
• Octopus can receive compatible half-hourly smart-meter readings.
• If you want Intelligent Go, the exact car or charger connection is supported and the vehicle will charge primarily at the supplied home.
• Your safe charging setup and actual top-up routine fit the tariff's hours and controls.
• The daytime rate, standing charge, term and exit fees work for the whole home, not just the car.
• If you have solar or a battery, your import/export pairing and control arrangements remain suitable.

Switching supplier and activating the EV tariff are separate steps. Octopus's Go joining guidance says new customers initially join a standard tariff while the meter connection is established, then accept the Go terms once half-hourly readings are available. Confirm the EV tariff start date rather than assuming the cheap rate applies from the first day of supply.

If the checks still favour Octopus, the switching guide and referral page explain the next steps. Choose the tariff for your home first.