Question

How much does public EV charging actually cost?

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Answer

Considerably more than charging at home, and the gap is large enough to change the economics of running an electric car depending on where you charge — which is the single most important thing prospective buyers underestimate.

The tiers, roughly:

Home charging on a standard tariff — the baseline.

Home charging on an EV tariff, with a cheap overnight window, which can be a small fraction of the standard rate and is where the running-cost advantage of an EV mostly comes from.

Workplace and destination charging, frequently free or subsidised.

Public slow and fast AC, more expensive than home.

Public rapid and ultra-rapid DC, the most expensive — sometimes several times the home overnight rate, and occasionally comparable to fuelling a petrol car per mile.

Why the gap exists. Public charging carries installation cost, grid connection charges, land rental, maintenance, payment processing and network operation — and in the UK, public charging attracts VAT at the standard rate while domestic electricity is at the reduced rate. That tax difference alone is substantial and is a standing complaint from drivers without off-street parking.

The equity problem this creates. Households that can charge at home get the cheap rate; those without a driveway — disproportionately in flats and terraced housing — are dependent on public charging and pay far more. The saving is distributed by housing type, which is rarely mentioned in comparisons.

What affects the price you pay:

Per-kWh pricing is now standard; older time-based pricing penalised slow-charging cars.

Subscription tariffs reduce the per-kWh rate for a monthly fee.

Idle fees after charging completes.

Contactless versus app, with some networks pricing differently.

Charging to 100% on a rapid unit, which is slow and therefore expensive per unit of time and occupies the bay.

What actually reduces cost: an EV tariff if you can charge at home, charging to 80% on rapids, using destination charging while parked anyway, and comparing networks rather than using whichever is nearest.

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