How much energy does a household socket outlet consume?
ADAC measured the power consumption of four electric vehicles using a 230 V - 2.3 kW household socket and a home charging home charging station Wallbox with 11 kW. In fact, the electricity consumed during recharging is not the same as that displayed on the electric car's dashboard!
The study revealed that part of the energy is lost in the process of transforming AC mains current into DC, although this step is mandatory in the process to avoid damaging the battery. Another point to underline about energy loss is that the longer the charging cable, the greater the loss.
What causes energy losses?
To evaluate these losses, ADAC has compared the consumption indicated by the on-board computer with the actual consumption from the electrical installation. The results vary for each electric vehicle, but it's clear that wall sockets are the least competent. The experts estimate up to 30% loss with wall sockets whereas wall-mounted boxes are more efficient, with lower losses, contained between 5 and 10% in 11 kW.
| Models | Power socket Power / Loss | Wall box Power / Loss | Wall-mounted box Reduced power / Loss |
|---|---|---|---|
|
Renault Zoé E-Tech |
2.3 kW / 24.2 |
11 kW / 9.7 |
- |
|
Volkswagen ID.3 |
2.3 kWh /13.6% of sales |
11 kW / 9% of power |
5.5 kW / 9.2 |
|
Tesla Model 3 |
2.3 kW / 15.2 |
11 kW / 7.7 |
3.5 kW /11.4 |
|
Fiat 500e |
2.3 kW / 12.7 |
11 kW / 6.3 |
3.6 kW / 13.9 |
Which electric cars have the lowest energy losses?
A closer look at the analysis reveals some striking results. The difference is greatest for the Renault Zoe E-Tech and the least for the Volkswagen ID.3. For the Fiat 500ehas been designed for efficient charging. In fact, the Fiat 500e has the lowest loss of electricity during charging, earning it the reputation of an adequate electric car.
These results highlight a loss related to charging time. Certain recommendations should be borne in mind by electric car users. These include give preference to installations that allow cars to be recharged for as short a time as possible to conserve energy. The savings generated by reduced losses could reach €120 per year at current electricity prices for a Renault Zoé E-Tech running 10,000 km/year, which is really worthwhile.
Following this study, ADAC strongly encourages carmakers to to be more transparent with regard to these figures and the loss of energy when charging electric cars at charging stations. Indeed, the automakers don't disclose any information about this lost energy, but they assure us that in the very near future. The latest electronic equipment will be at the cutting edge of technology, enabling without damaging the batteries or wasting energy. and without wasting energy.
How to avoid pressure loss?
This is an analysis to be taken into consideration when buying or your future electric car. Household sockets and wallboxes have ahigher energy loss than home-installed charging boxes, which are more efficient .
Charging boxes are the most energy-efficient devices the best energy efficiency for recharging your electric car. With them, less energy is lost, and your electric vehicle's charge is of better quality, as shown in the results analyzed by ADAC.
What's more, with energy constraints hanging over the heads of the French this winter, even the slightest saving in money or energy is welcome. The key is to optimize the charging of your electric car and leave it charging for as short a time as possible, so as not to consume too much electricity.
Read also: Rising electricity prices: tips for reducing your electricity bill.
How to recharge your electric car more efficiently?
To avoid additional energy and electricity costs, it's a good idea to know how much energy your electric car needs to recharge, and to adapt its recharging accordingly. You also need to bear in mind that the energy displayed on the car's electrical panel is not 100% accurate in relation to the charging stations. So, to save as much energy as possible, you need to leave your car on charge for as short a time as possible to avoid losses.
Read also: How to recharge your electric car?
