E.ON Next Drive Smart vs EDF GoElectric: 2026 Compared

E.ON Next Drive Smart and EDF GoElectric are the two best-known overnight EV tariffs in the UK after Intelligent Octopus Go. Both target the same buyer - a smart-meter household with a home charger doing the bulk of charging between midnight and dawn - but they take different routes there. E.ON keeps the rules simple and the contract flexible. EDF goes harder on the headline pence-per-kWh and gives you a longer window to use it.

This comparison breaks down where each tariff wins, where each falls short, and which one delivers the bigger annual saving for the most common UK driving profiles.

Both tariffs are now in the sub-10p range that defines what "competitive overnight EV tariff" means in 2026 - a band the rest of the supplier market is being dragged toward by Octopus's incumbent position. The pence-per-kWh gap is meaningful but not dramatic: at 8p versus 6.99p, the spread is just over 1p. For a typical EV doing 8,000 miles a year (around 2,400 kWh of home charging at 0.30 kWh/mile), that translates to about £24 a year of pure rate-difference saving - useful, but smaller than the exit-fee gap if you're undecided.

The bigger structural difference is in the off-peak window. EDF gives you 7 hours (11pm–6am); E.ON gives you 6 (00:00–06:00). For a 7kW charger, that's the difference between a 49 kWh top-up and a 42 kWh top-up at the cheap rate before the meter ticks over to day rate. For most drivers replenishing 10–20 kWh per night, both windows are easily long enough. For households with two EVs, large batteries, or a heat pump running on schedule, the EDF window has a real edge.

No exit fee. This is the single biggest structural advantage. If you move house, change cars, or simply find a better tariff six months in, you can walk for free. EDF's £75 exit fee isn't crippling, but it does mean the maths only works if you genuinely intend to ride out the full 12 months.

No charger restriction. Drivers using older, non-smart chargers, granny cables, or chargers that don't appear on a supplier's whitelist often hit walls with API-based tariffs like Intelligent Octopus Go. E.ON sidesteps the entire issue: any unit on a smart-meter half-hourly read can charge inside the window and pay 8p.

Simpler mental model. Six hours, one rate, one window. No bonus slots to monitor, no app to babysit. For a household that just wants to plug in at midnight and forget about it, this is the right shape.

Lower headline rate. 6.99p/kWh undercuts E.ON by about 13%. Over a year of typical EV usage, that's a real saving - and it compounds for high-mileage drivers, two-EV households, and homes running heat pumps overnight.

Longer off-peak window. Seven hours instead of six means more headroom for charging interruptions, late returns home, or scheduling other heavy loads (dishwasher, dryer, hot-water immersion) inside the cheap rate.

Smart Charging bolt-on. The £60/year bill credit for enrolling is effectively a free win that further widens the gap with E.ON, assuming your charger supports the data-sharing requirements.

Open to existing customers. If you're already with EDF for gas or electricity, GoElectric can be added without supplier-switching friction. E.ON Next Drive Smart requires a full switch to E.ON Next.

The decision comes down to four questions about your situation, in order:

1. Are you confident you'll stay 12 months? If yes, the EDF exit fee is irrelevant and the lower rate wins. If no, E.ON's no-exit-fee structure is worth the ~1p/kWh premium.
2. Do you have a charger that works cleanly with smart-meter half-hourly reads? If yes, both tariffs are equivalent on that axis. If you're on an older or unusual charger, E.ON's any-charger policy is the safer bet.
3. How many kWh a year are you charging at home? Higher home-charging volume amplifies the EDF rate advantage. Below ~1,500 kWh/year, the gap is small enough that contract flexibility (E.ON) probably wins.
4. Are you running other heavy loads overnight? A household with a heat pump on schedule, hot-water immersion, or two EVs benefits disproportionately from EDF's longer window.

For most single-EV households doing average UK mileage on a modern home charger, EDF GoElectric is the lower-cost choice in absolute terms over a full 12 months. For households where flexibility, simplicity, or charger compatibility matter more than the last pound of saving, E.ON Next Drive Smart is the cleaner option.

EDF GoElectric is the better tariff on paper - lower rate, longer window, an extra £60/year credit available. E.ON Next Drive Smart is the safer tariff in practice - no exit fee, no charger restrictions, simpler to live with day to day. The £75 EDF exit fee is what tips the balance for anyone whose 12-month plans aren't completely settled. Read each tariff's full E.ON Next Drive Smart review and EDF GoElectric review for spec-level detail, then pull a quote from both before deciding. Also worth comparing: our Octopus Go vs Intelligent Octopus Go and Intelligent Octopus Go vs OVO Charge Anytime breakdowns.