Post tariffs (CEME and OPC) are displayed at the post without VAT and vary from operator to operator: replace the illustrative values with the ones you find there. The home price is the one on your bill, with VAT included.

The post advertises energy at €0.22/kWh and the full invoice works out at €0.758/kWh, which is 3.44 times more. The difference is the post usage parcel charged by the operator, plus VAT on the whole invoice.

Charging at the post costs 4.21 times what the same charge would cost at home, a difference of €20.80 in a single session.

There is a component charged per minute, so the same charge costs more in a car that accepts less power: lower the power and watch the effect.

The time shown is a theoretical minimum, at constant power. Above roughly 80% state of charge the power drops, so a real session takes longer and the per-time component costs more, never less.

The energy parcel is sold by the electricity supplier (CEME) and the post usage parcel by the post operator (OPC), which are separate companies. MOBI.E clarifies that the operator per-kWh component corresponds to a service, the use of the point, and not to the supply of electricity.

The figures exclude charging losses: the meter measures the energy leaving the wall and the battery keeps slightly less, so the real cost per usable kWh is a little higher.