Methodology

Charging time

We model the actual charging curve for each EV in 1% SOC steps. At each step, the delivered power is the minimum of the charger's maximum kW and the car's accepted kW at that SOC. Above 80% SOC the curve tapers steeply, which is why most rapid sessions end there.

For AC charging (typically 7kW or 22kW chargers), the limit is the vehicle's onboard AC charger, not its DC peak. A 22kW charger paired with an 11kW onboard charger delivers 11kW, not 22.

Below 10°C we apply a battery thermal derating because pre-conditioning isn't always possible at unplanned stops.

Charging cost

Cost is delivered kWh × rate, plus any session fee, with the result raised to the minimum charge floor if one applies. Subscription tariffs report the per-session cost; the monthly fee is shown separately so you can decide whether the volume justifies it.

All prices are VAT-inclusive at the rate the network publishes. A February 2026 First-tier Tribunal ruling could move public charging from 20% to 5% VAT; we'll update each network as it implements that change.

Cost per mile

We use real-world Wh/mile figures from independent road tests (Carwow, Bjørn Nyland, EVDatabase) rather than WLTP. WLTP is optimistic for most cars and significantly so for high-power EVs at motorway speeds.

Sources and verification

Every car entry cites the source of its charging curve. Every network entry cites the URL of its published tariff page and a last-verified date. We comprehensively review tariffs quarterly and have an automated weekly check that flags any tariff page that has changed since last verification, triggering a manual update.

What we don't do

We don't scrape live tariffs. We don't republish ZapMap data. We don't recommend networks based on affiliate rate — affiliates are clearly disclosed but never influence rankings.