Electric cars
Plug-in hybrids on Octopus Go and Intelligent Go
Whether a plug-in hybrid (PHEV) can use Octopus EV tariffs, and why a smaller battery changes whether they save you money.
Edited by Rob Gibbs. Published: . Guidance reviewed: .
Short answer
Octopus’s EV tariffs depend on charging a vehicle at home, and Intelligent Go also needs a car or charger it can control. Check the current eligibility for your exact hybrid and charger. Even if you are eligible, a hybrid’s small battery shifts far fewer kWh overnight than a full EV, so the saving relies on moving other household use into the cheap window too.
Eligibility comes first
Octopus checks the car and charger during sign-up for Intelligent Go. Do not assume a hybrid qualifies because a fully electric model from the same brand does. Use Octopus’s eligibility check for your exact model.
Why the battery size matters
A hybrid might take a few kWh a night, against tens of kWh for a full EV. The overnight discount on those few kWh can be smaller than the extra you pay at the day rate for the rest of the home. Work out your daytime use before switching.
- Large overnight household use (hot water, laundry, a battery): an EV tariff can still win.
- Mostly daytime use and a small hybrid battery: Flexible or Agile may be cheaper.
Test it with your own numbers
Price your actual half-hourly usage on each tariff with this site’s private usage tools, then add the car’s charging on top.
Questions people ask
Is Octopus Go worth it for a plug-in hybrid?
Only if enough of your household use moves into the cheap window. The car alone often shifts too little energy to beat a standard tariff.
Does Intelligent Go work with hybrids?
It depends on whether Octopus can control your specific car or charger. Check the current compatibility list.
Tariffs in this guide
Related guides
- Home vs public EV charging: what each costsHow home charging on an Octopus EV tariff compares with public chargers per kWh and per mile, and how to work out your own figures.
- EV chargepoint grants: who can still claimThe government EV chargepoint grant for renters and flat owners: how much it pays, who qualifies and how it changed on 1 April 2026.
- Which cars and chargers work with Intelligent Octopus Go?How to check whether your car or charger works with Intelligent Octopus Go, what happens if it does not, and the Go tariff that works with any EV.
- Keeping gas on a fix while electricity is on Intelligent GoCan your gas stay on a fixed tariff while your electricity moves to Octopus Go or Intelligent Go? How the two fuels work separately.
- Single-phase vs three-phase home EV chargingWhy most home EV chargers run at around 7kW, when three-phase charging helps, and why a faster charger rarely matters on an overnight tariff.
- Octopus EV tariffs without a drivewayWhether Octopus Go or Intelligent Go can work if you have no driveway or home charger, and what to compare instead.
Primary sources
- How does Intelligent Octopus Go work and how can I join? — Octopus Energy; checked 2026-10-30. The 23:30 to 05:30 whole-home window, smart charging billed at the off-peak rate and eligibility checks.
- Octopus tariffs for electric cars — Octopus Energy; checked 2026-08-27. Current EV tariff choices, charging windows, smart-meter and device-compatibility requirements.
- Smart Tariffs terms and conditions — Octopus Energy; checked 2026-08-24. Smart-tariff eligibility, rate windows, compatibility and publication caveats.