Thursday, 26. April 2018
When electric vehicles(EV) were first introduced you had to find one of the very rare charging points and leave your car plugged in for many hours in order to achieve a full charge. Th good news was that most of these charging points were totally free to use.
We then saw the introduction of home (or works) chargers that could be installed at home and run off the standard domestic electric supply. In order to encourage the installation of these charges whilst promoting the use of electric cars the Government offered a subsidy to those installing a charge point.
Of course this now meant that you would be paying to top up the batteries with latest figures showing that to charge the battery of the Renault Zoe from 0 – 80% would cost in the region of £4.00. Compare this with what you would now have to pay to charge your car at a public Polar slow charge point and it will now cost you £13 over 3 times as much.
What Car has looked into the anomalies and I’ve used some of their findings to report on the current situation. First of all they found that there were still some free charging points. They also found some wide variances between suppliers. Looking at the cost per kilowatt hour – when you charge your car at home it will cost on average 14p per kWh. Some public chargers are charging up to 40 pence per kWh with Shell currently on a promotional tariff of 25pence per kWh which will rise to an astronomical 49pence per kWh from 1st June.
The charging points can charge at 22Kw or 43Kw, a slow or fast charge. But they found that whilst they were charged for the fast charge they only received the slow charge when connected to a Polar charge point in Hampshire. This meant that they paid £6 for a 30-minute charge but only got the equivalent of 15 minutes charging.
In addition to the cost of the electricity, you can also be charged per visit. This can add as much as £3.50 to the cost each time you charge the car. Some demand a registration fee of up to £20 to join their network. To add to the total confusion some will charge on a kWh basis whilst others charge on a minutes or hours basis. This makes it very difficult to compare tariffs.
The range of the cars is also confusing. The Zoe is top of the production car trees with an official range of 250 miles. But in the middle of Winter in real-world conditions, it was only found to achieve 130 miles. Like many EV’s the Zoe has two battery sizes, 22kWh and 41kWh, the second capable of rapid charging. Using the car with the larger capacity battery they carried out a 10% charge at a Source London charging point in south-west London. It cost £2.07 which may seem reasonable but would have cost £17 had they charged 80%. The fast charger took half an hour to charge up to 10%.
Next they were off to Winchester on the M3 where they hooked up to an Ecotricity rapid charger. They were down to 30% but in 46 minutes were back up to 80% at a cost of £6.90. That would mean the cost of 0-80% would be £9.36. However, if you are an Ecotricity customer with a home charger fitted the cost would drop down to half that figure as you receive a 50% rebate.
Finally, on their way back to London they used a Polar instant charger which cost £6 for a 30-minute charge. However, the bill was calculated on a charge rate of 43kWh but in fact they only received a 22kWh charge so they only received half of the charge they paid for.
So the industry needs to tighten up and if the cost of charging increases much more simple economics will take over and put people off this ‘cheaper form of motoring’. So is running an EV becoming more expensive to fuel than a petrol or diesel car. What Car put it to the test.
A 50% EV charge will give you a realistic 65 mile range. You pay £6 for that via a rapid charger. That calculates out at 9 pence per mile. If you have to add an admin fee for every charge (Geniepoint London demands £1.80 every time you charge using one of its rapid chargers) the figure increases to 12 pence per mile. If you stop at a Shell garage after 1st June the figure increases to 15 pence per mile.
Compare these figures with a Fiesta 1.0 petrol which costs about 13 pence per mile or a VW Polo 1.0 Diesel that costs 11 pence per mile. Of course, the electricity cost comes down if you only ever use your home charger. But if you use public chargers the cost is already above petrol and diesel equivalents. Something needs to be done. By Graham Hill
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