Calculating power consumption: charging an electric car consciously
Nov 14, 2025
If you are thinking about purchasing an electric car, sooner or later the question arises: how much will the vehicle actually consume? In the gasoline era, the math was relatively simple: you looked at how many liters the car consumes per 100 kilometers and then multiplied that by the current prices. With an electric car, it's already a bit more technical, but on the flip side, it can be much clearer if you know what to pay attention to.
Your daily routine, your charging habits, and the type of car all influence how much energy your transportation will require. Some prefer to charge slowly at home, while others like to quickly finish at a public AC charger, or occasionally reach their goal at a DC fast charger. Each can mean a different kWh amount and cost.
In our previous blog posts, we have repeatedly dealt with the everyday questions of electric driving, whether it is about charger selection, charging time, or network load. However, in this article, we will focus on how to calculate the cost associated with the energy needs of your electric car.
What influences energy consumption?
The kWh/100 km values provided by car manufacturers give a good starting point, but reality is a bit more nuanced and shows different results. Temperature, driving style, load, and speed all significantly affect how quickly the battery drains.
If you know that your car consumes, for example, an average of 16 kWh per 100 km, then a 200 km trip represents about 32 kWh. If you pay 36 forints (this number is optional, calculate according to your provider's rates) per kilowatt-hour for household electricity, then such a distance costs about 1150 forints. As you can see, the formula is not complicated, but it could be even simpler than that.
Real-time data, real decisions
In the Voltie system, you can see exactly how your daily or weekly consumption is shaping up. The application lets you know when you charged and how this energy intake was distributed over time.
During the charging sessions, you will see not only the energy consumption but also the exact costs in the app, so you don't need to do any separate calculations – all data is available transparently and can be retrieved. The data can also be downloaded in Excel format, so those who love to dive into numbers can get a complete analysis of their charging habits.
Real-time data, real decisions
In the Voltie system, you can see exactly how your daily or weekly consumption is shaping up. The application lets you know when you charged and how this energy intake was distributed over time.
During the charging sessions, you will see not only the energy consumption but also the exact costs in the app, so you don't need to do any separate calculations – all data is available transparently and can be retrieved. The data can also be downloaded in Excel format, so those who love to dive into numbers can get a complete analysis of their charging habits.
Calculating Electricity Consumption: What Do You Gain from It?
The costs of electric cars can be tracked well in terms of transportation. Calculating electricity consumption is essential for informed decision-making. If you commute daily, it may be worth reviewing weekly or monthly how much this means in electricity consumption. The same applies if multiple people use the same car.
As you can see, calculating electricity consumption does not require any extra effort; you do not need to memorize anything, take notes, or prepare reports; just take a glance at your phone, and all the data is at your disposal.
With the solutions offered by Voltie charging, you can clearly see how the electric car impacts your total household consumption. The system also provides feedback. This is one of the best foundations for making truly informed decisions at any stage of your transition to electric.
Take a look at our website if you want to learn more about electric car charging, or if you are already cruising the roads with an e-license plate, subscribe to our newsletter to be the first to learn about our new developments and useful tips!
