By Laura Ojea
Anyone who has a conventional vehicle knows how many liters his car consumes per 100 km, and he only has to multiply it by the price of a liter of gasoline or diesel, but how is it measured in the case of an electric car?
The first thing to know ishow many kWh does an electric car battery consume per 100 km, which depends not only on the size of the vehicle but on your driving style, speed and load. But generally speaking, the fork varies between 12 kWh every 100km for an urban utility and30 kWh every 100km of a minibus.
Then you have to knowhow much does the kWh cost, that with the hourly rate and depending on when you recharge it, the price varies. As explained in Current Electricity, the Renault blog for the electric vehicle, if the electric vehicle is recharged in the home garage, a home can choose between three rates: the common rate, known astariff 2.0 A., the rate withtime discrimination and the rate ofElectric vehicle. Since 2014, the rate that was known asSuper Valley Rate, has been officially renamed the Electric Vehicle Rate (2.0 DHS).
The Electric Vehicle rate includes a6 hours total, from 1am to 7am. And it is precisely at that time when electricity is cheapest and when it is recommended to recharge the vehicle.
“A household that has contracted a rate with hourly discrimination or the Electric Vehicle rate pays for its electricity bill much less than the common rate, because they are not only hours where the price of MWh is much cheaper in the wholesale market , but the tolls are also lower ”, he explainsFrancisco Valverde, analyst and expert in the electricity sector, "so if you have an electric car, it is best to hire the Electric Vehicle rate."
Taking as a reference the CNMC electricity bill simulator, which uses the prices of supplies covered by the Voluntary Price for the Small Consumer (PVPC), it has been calculated how much theannual consumption of an electric vehicle that traveled 1,500 km per month (18,000 km per year), with a consumption of12 kWh, and an invoice at the Electric Vehicle rate, with acontracted power of 3.45 kW, would costyear 372.55 euros:
Therefore, if we take into account the consumption of12 kWh to go100 kmwith our electric car charging it with the Electric Vehicle Rate (2.0 DHS), in the course of this last year, it would cost1.91 euros. In the case of a diesel car with a consumption of 6 l / 100 km, and with an average price in the last year of € 1.0767 / l, the cost is6.46 euros. And in the case of gasoline, the average price of the last year is € 1.201 / l, so it would be7,206 euros, almost 5 times more.
But remember that as you need to shorten the recharge time of your battery or increase the power output of the plug, you will have to increase the contracted power of your electricity supply, and this will mean an increase in toll costs.
The Energy Newspaper