Octopus Electric Vehicles Logo

Updated 15/01/24

BYD DOLPHIN charging offer

This offer is now closed.

Order one of our stock BYD DOLPHINs by 31/12/2023 and you’ll get free home charging (subject to the terms and conditions below) for this vehicle for the duration of your agreement if you switch to Intelligent Octopus Go tariff. If you’re already on the Intelligent Octopus Go tariff, you’re already eligible for this offer. This offer is only available to people able to charge their EV from home, and replaces the standard 4,000 miles of free charging we offer. This offer is only available whilst BYD DOLPHIN stock lasts.

How does it work?

Once you’ve successfully joined Intelligent Octopus Go, a credit will be applied to your Octopus Energy account as a lump sum to cover the estimated cost of your charging for the remaining duration of your agreement. This estimated figure is worked out based on your annual contracted mileage (as shown in your lease) and it is assumed that you will only charge your car at home during the Intelligent Octopus Go off-peak window (this is currently from 23:30-5.30) or during the times that we start smart charging your car at this off-peak rate. The credit to your account will reflect the cost of charging during the off-peak/smart charging period only. These requirements help us make sure your EV is charging when energy is the cleanest and least expensive, plus when strain on grid infrastructure is at its lowest, while making sure your car is always charged and ready when you need it.

How do you calculate the charging costs?

First, we calculate the car's efficiency by dividing the usable battery size by the ‘real world' range. ‘Real world range’ is taken from EV Database, and combines the predicted range of an EV in cold weather with the predicted range of an EV driving in warm weather. For cold weather, this assumes it's -10 degrees celsius with heating on. For warmer weather, it's based on 23 degrees celsius and there's no A/C on. Predicting exact range is tricky, and range will depend on speed, style of driving, weather conditions and route condition.

The BYD DOLPHIN (Comfort & Design variants) efficiency takes a usable battery size of 60.5 (kWh), and then divides it by a real world range of 210 (miles). That equals 0.288 kWh/mile.

We then multiply this by your annual mileage and by the off-peak Intelligent Octopus Go window rate.

Example for BYD DOLPHIN

  • If you choose a 10,000 miles/year agreement then this will be calculated as follows:
  • 0.288 (Car's energy efficiency) * 10,000 (contracted miles/year) = 2,880
  • 2,880 * 7.5p (price of energy per kWh) = £216 (charging costs per year)
  • £216/12 = £18 (charging cost per month)


This is subject to the following:

  • The lease agreement must be for a BYD DOLPHIN eligible vehicle leased from Octopus EV.
  • The value of the credit applied is based on the annual lease mileage selected when taking out the lease. This figure is capped at a maximum of 20,000 miles per year.
  • The offer is available for the duration of your initial lease agreement and will not apply to any lease term outside of that.
  • You must have or be able to install an eligible home EV charger or have had one installed before this offer takes effect.
  • We will make available to you information about which EV chargers are eligible before you select your lease, we must have confirmed to you that your vehicle and EV charger are eligible and that you have been accepted onto this offer.
  • We will provide the free home charging credit on your electricity account once you have successfully switched to the Intelligent Octopus Go tariff and had your charger installed. Please note that switching to this tariff and/or having a charger installed may take some time, and will depend on whether you are already an Octopus Energy customer, and whether you already have a smart meter installed.
  • If for any reason you are not able to have a smart meter installed and therefore are not able to switch to this tariff, we will instead provide you with a one off complimentary credit of £600 on the Electroverse network (our out of home charging network).
    • Please note that this would not constitute a reason to cancel your vehicle free of charge, or return the car without penalty.
  • This offer only applies to home charging through the Intelligent Octopus Go tariff on the off-peak tariff, and therefore does not carry over to any other type of charging, such as public charging on the Electroverse or otherwise.
  • Name and address on the lease and energy account must be the same, or you must be able to prove that you cohabit.
  • We reserve the right to remove or amend this offer at any time.
    This offer is not transferable and no cash equivalent will be offered.
  • Subject to availability and eligibility. See our charging terms and conditions here for further details, including terms around free home charging installation for standard installs.
  • Nothing in this offer prevents you from switching energy provider or tariff at any time during your lease term. However, to get the benefit of this offer you must be supplied by Octopus Energy on the Intelligent Octopus Go tariff for the credit to be applied.

The promoter of this offer is Octopus Electric Vehicles Limited, reg number 10754317 registered address UK House, 5th Floor, 164-182 Oxford St, London W1D 1NN