Electric vehicle drivers could save up to 70% on their charging costs with Octopus Energy Go.

The new tariff from Octopus Energy offers a four hour window every night where electricity is charged at 5p per kWh – around 25% cheaper than the average Economy 7 rate.

Octopus Energy has partnered with MyEnergi to bring customers "automatic cheap time charge" using their smart Zappi charger.

The charger will automatically charge the car during the cheapest four hours, unless the driver overrides for a quick boost of energy sooner.

Most EVs should be able to reach a full charge in within the four hour window.

Octopus Energy’s director of product Rebecca Dibb-Simkin said: “Octopus is passionate about driving the UK’s switch to electric vehicles. We’re delighted to use our innovative tech both to offer the cheapest kWh charge in the market and enable your car to automatically charge itself, a brilliant way to unlock those electric car savings.”

Alongside the launch of this tariff, Octopus Electric Vehicles is kicking off a UK-wide summer tour, taking its hand-picked selection of the best electric car models to communities and businesses around the UK - and bringing together a bundle with a great value car lease, a smart charger, 100% renewable electricity via the Octopus Energy Go tariff, and a free driver support helpline.