Photo Credit: iStockE.ON Next has cut its off-peak home EV charging price in the U.K. to 6.9 pence per kilowatt-hour (about 9 cents).The new overnight rate could make one of the biggest costs tied to electric driving much easier to manage.Here's what to knowFor drivers who can plug in overnight, the key charging window runs from midnight to 6 a.m. On E.ON Next's Drive Smart tariff, electricity during those hours costs 6.9 pence per kilowatt-hour, down from 8 pence (11 cents). As The Sun reported, that gives the company the cheapest comparable off-peak EV charging tariff among major British suppliers.AdvertisementAdvertisementThe overnight price is significantly lower than E.ON Next's standard daytime electricity price of 31.1 pence per kilowatt-hour (about 42 cents). The company has also reduced the off-peak price on its Next Drive Fixed tariff, which stands at 8.5 pence per kilowatt-hour.According to The Sun, E.ON Next estimated that customers on the Next Drive Smart tariff could save around £462 (about $624) a year versus the price cap. For drivers using the fixed-rate option, the company put the annual saving at £423 (approximately $571)."As more households switch to electric, we want charging at home to be simple, affordable and something drivers don't have to think twice about," Gráinne Regan, propositions director at E.ON Next, said.More backgroundFuel savings remain one of the clearest financial benefits of driving an EV, but those savings depend heavily on when and how drivers charge. Public fast charging can be convenient, but home charging on a low overnight tariff is often where the biggest cost advantage appears.AdvertisementAdvertisementA discounted rate can cut the cost of daily commuting, school runs, and other routine travel for drivers who are able to plug in overnight when grid demand is lower. According to E.ON Next, more than 100,000 customers have joined the scheme.Lower rates could broaden that appeal, particularly as more U.K. households weigh the upfront cost of an EV against savings on fuel and maintenance.What can be done?Drivers who already own an EV can compare their energy tariff with overnight charging plans, such as E.ON Next's.For households considering an EV purchase, lower home charging costs can reduce the total cost of ownership, especially for drivers with regular daily mileage.AdvertisementAdvertisementDrivers can sign up for the Next Drive Smart and Next Drive Fixed plans without an exit fee, The Sun reported, which reduces the risk of trying a tariff built around overnight charging."Next Drive Smart makes charging an EV one of the cheapest habits a household can have," Regan said. "We want every driver to see real savings from day one and to make the switch to electric feel like the smart, easy choice it should be." Where can I learn more?E.ON Next's lower overnight rate is a reminder that the cost of driving electric can swing a lot based on when and where you plug in. • Over Memorial Day, a U.S. driver found a promo still cost nearly double a nearby Tesla charger.AdvertisementAdvertisement• In Los Angeles, charger vandalism and copper theft show how public refueling can get quite expensive for drivers.• Major charging companies let drivers access more than 70,000 chargers through a single app.EV charging costs are shaped by more than the car itself. Pricing plans, charger access, and network reliability can all make a noticeable difference in whether driving electric stays affordable.Get TCD's free newsletters for easy tips, smart advice, and a chance to earn $5,000 toward home upgrades. To see more stories like this one, change your Google preferences here.