Sorry - to be clear I meant if Hertz owned their own chargers and pumped in the same amount of electricity as they would've put in petrol. Not a 3rd party charg

Sorry - to be clear I meant if Hertz owned their own chargers and pumped in the same amount of electricity as they would've put in petrol. Not a 3rd party charging rate. Domestic rates today on moneysupermarket.com are 24p/kWh, and I imagine Hertz could get it cheaper.