The Real Bill Behind the Tariff: UK Public EV Charging Networks Compared for 2026
Why the pence-per-kWh figure is only the starting point
Public charging in the UK has become more transparent on energy price, but not necessarily more transparent on total cost. A rapid charger advertising 79p per kWh may look cheaper than one advertising 85p, yet the final bill can reverse that impression once a connection fee, a monthly subscription, a parking charge or an overstay penalty is added.
For this comparison, the test is a 100-mile top-up. Assuming an efficiency of 3.5 miles per kWh, the car needs about 28.6 kWh delivered to the battery. That is a realistic figure for a mid-sized EV in mixed UK driving, though colder weather, motorway speeds and heavier vehicles will raise it. The rates below are illustrative mid-market figures as of November 2026; operators change prices by site, so the app or contactless screen remains the final authority.
The 100-mile test: one-off rapid charging
| Network | Typical headline rate | Session fee | Cost for 100 miles | What changes the bill |
|---|---|---|---|---|
| Tesla Supercharger, non-Tesla access | 69p/kWh | None | £19.73 | Membership can lower the rate at some sites; idle fees apply at busy locations. |
| Ionity | 79p/kWh | None | £22.59 | A monthly Passport-style subscription can cut the rate substantially. |
| InstaVolt | 79p/kWh | None | £22.59 | Contactless payment is straightforward; no membership is required. |
| Gridserve Electric Highway | 79p/kWh | None | £22.59 | App and contactless tariffs can differ by site and speed. |
| Osprey | 79p/kWh | None | £22.59 | Overstay terms vary; check the grace period. |
| MFG EV Power | 79p/kWh | None | £22.59 | Site-specific terms apply, but rapid pricing is often simple. |
| bp pulse | 85p/kWh | None | £24.31 | A subscription can reduce the rate, but the monthly fee must be earned back. |
| Shell Recharge | 85p/kWh | None | £24.31 | Loyalty and app pricing can vary from the contactless rate. |
| Pod Point public AC | 69p/kWh | None | £19.73 | Much slower charging; time and parking become part of the real cost. |
| Council-owned destination posts | 50p/kWh | Varies | £14.30 | Availability, parking rules and charging speed vary widely. |
On a pure one-off rapid-charging basis, Tesla’s non-Tesla access is the cheapest of the major rapid networks in this illustration, at about £19.73 for 100 miles. Several pay-as-you-go rapid operators cluster around £22.59. The premium-brand rapid networks at 85p per kWh reach £24.31 before any subscription or penalty.
That does not make the cheapest headline rate the cheapest real option for every driver. A 50p per kWh council post may be excellent value if the car is parked for two hours anyway, but poor value if the driver is waiting. A 69p Pod Point AC post is cheaper per kWh than a 79p rapid charger, but an hour-long wait has a cost in time, particularly on a journey.
The fees that sit outside the energy rate
Session fees are less common on rapid chargers than they once were, but they still appear on some app-based and destination posts. A 50p connection fee on a 28.6 kWh top-up adds about 1.7p per kWh, or 0.5p per mile on a 100-mile journey. That is modest on its own, but it matters on small top-ups. A 5 kWh splash of charge with a 50p fee carries an effective 10p per kWh surcharge.
Per-minute charging is now more often an overstay mechanism than a primary tariff. Typical idle penalties range from 50p to £1 per minute after a grace period of roughly 10 to 15 minutes. A 30-minute overstay at £1 per minute adds £30, which is more than the energy for the entire 100-mile top-up on several networks. Motorway drivers should treat the charging bay as a timed resource, not a parking space.
Parking charges add another layer at some retail and motorway sites. Public charging also carries 20% VAT, whereas domestic electricity is taxed at 5%. The VAT treatment is already inside the advertised public rate in most cases, but it helps explain why public charging remains structurally more expensive than home charging.
Membership maths: when a subscription pays
The subscription question is simple arithmetic. Ionity’s discounted rate in this illustration is about 59p per kWh against 79p standard, a saving of 20p per kWh. On a 28.6 kWh top-up, that is £5.72 saved. If the subscription costs around £11.99 per month, the break-even point is roughly two 100-mile rapid top-ups per month. A driver who uses Ionity once a month will lose money; a driver who uses it weekly will not.
Tesla’s membership is a smaller monthly outlay in this example, around £8.99, with a discount of about 10p per kWh at participating sites. That saves £2.86 per 100-mile top-up, so the break-even point is about three such top-ups per month. bp pulse and Shell Recharge subscriptions work on the same principle: they are tools for regular users, not occasional ones.
For a low-mileage driver, the correct strategy is usually to avoid subscriptions altogether and choose the cheapest pay-as-you-go rapid charger on the route. For a high-mileage driver, a single membership tied to the network used most often can be worthwhile, but two or three overlapping memberships rarely are.
Which network suits which driver
Occasional drivers should prioritise simplicity. Tesla Supercharger sites where non-Tesla access is available are often the cheapest rapid option, followed by the 79p pay-as-you-go rapid networks. Avoid monthly plans unless the car is used for regular long journeys.
Frequent long-distance drivers should do the membership calculation before signing up. Ionity can be compelling for a driver who regularly uses its corridor sites; Tesla membership can work for a driver with access to the Supercharger network. The savings depend on route, not brand loyalty.
Motorway drivers should weigh speed as well as price. A 150 kW charger that adds 100 miles in a short stop may be better value than a cheaper 50 kW charger that adds an hour to the journey. The cheapest pence-per-kWh rate is not always the cheapest journey.
Urban and destination drivers have the widest spread. Council-owned posts and slower public AC points can be inexpensive, but parking restrictions and availability decide whether they are practical. For a driver already parked at a supermarket or hotel, a slow charger at 50p to 69p per kWh can be excellent value.
The verdict
There is no single cheapest UK public charging network in 2026. On a one-off 100-mile rapid top-up, the illustrative range runs from about £19.73 on Tesla non-Tesla access to £24.31 on the most expensive premium rapid rates. Add a 50p session fee and the spread widens slightly; add a 30-minute idle penalty and the spread becomes irrelevant.
The sensible approach is to compare the all-in cost for the journeys actually driven: the energy rate, any session fee, the membership needed to obtain that rate, the likelihood of an overstay, and the value of time. The network with the lowest headline rate is not always the network with the lowest bill.
