Is your home ready to charge an electric car?

A growing number of households are considering installing home charging stations for electric vehicles, raising questions about whether their homes are equipped to handle the additional electrical load. Before installation, it is crucial to assess the existing electrical supply, available power capacity, other major energy-consuming appliances in the household, and personal driving habits. A home charging station represents one of the larger electricity consumers within a household. In addition to increasing overall consumption, it can also affect the load on the electrical circuit and peak demand, which means it is essential that the charging station’s power matches the home and usage patterns. Proper management of charging can help avoid unnecessary strain on the electrical system and potential overuse of the agreed power limit. The amount of electricity consumed by an electric vehicle depends on several factors including the vehicle model, driving style, speed, external temperature, and the use of heating or climate control systems. Typically, this is expressed in kilowatt-hours per 100 kilometers. For example, if an electric car consumes approximately 19 kWh per 100 kilometers, then for 1,000 kilometers driven, around 190 kWh of electricity would be used. At 15,000 kilometers annually, this translates to roughly 2,850 kWh of electricity. This calculation helps estimate how much additional electricity will be needed for home charging. When planning a home charging station, it is not just the distance traveled that matters, but also when the vehicle is typically charged and which other large appliances are operating simultaneously in the household. The timing of charging can significantly impact overall energy consumption and distribution within the home. Whether a higher-capacity socket is necessary depends on the existing electrical setup, the connection power, the chosen charger, and other devices being used concurrently. Before installation, it is advisable to check primarily: The condition of the electrical wiring and distribution board The building's connection power The power rating of the home charger and the vehicle Other major energy-consuming devices such as the heat pump, electric boiler, or oven How many devices typically operate at the same time Therefore, it is not sensible to automatically choose the most powerful charger upon purchase. It is more important that its power is aligned with the vehicle, the electrical setup, and other devices in the home. At Petrol’s home charging stations, technical possibilities are checked on-site, and an appropriate solution is prepared based on individual requirements. Charging an electric vehicle can influence the grid mainly because the charger is a high-power device. When used alongside other major consumers such as the heat pump, electric boiler, or oven, it can increase peak demand. Smart home chargers allow scheduling and managing consumption, helping align charging with other devices in the household. The cheapest time to charge an electric vehicle is not solely determined by the price of electricity but also by the billing method. If you have a contract with a dual-tariff electricity plan, the lower tariff is usually applied during nighttime hours and on weekends, holidays, and public holidays. For customers under the new network billing system, the network cost is calculated based on time blocks that vary according to season, workday or weekend, and network load. To reduce charging costs, it is often advisable to shift charging to times when other major household appliances are not in use. By doing so, you can decrease peak demand and additional strain on the electrical connection. If your charger allows scheduled charging, you can plug in the vehicle upon returning home and set the start time for later. This way, the vehicle will be ready for use in the morning, while charging occurs automatically. Choosing an electricity supplier should not be based solely on price.