EKOEN or single AC charging points? What is the advantage of alternative filling stations?
Łódź, Wrocław, Szczecin, Poznań, Kraków, Gdańsk or Lublin are the cities that will offer 200 charging points for electric cars in their area by the end of 2020. Such an obligation was imposed on them by law in 2019. Not everyone knows that they can be replaced by three EKOEN alternative filling stations. It's also worth knowing what comes out of it.
At the beginning it is important to realise what these two solutions mean for current and future electric car users. One EKOEN alternative filling station is now at least five fast DC charging stations (3 x 50kW, 1 x 100kW and 1 x 150kW). Three such stations are the same as 200 AC charging points with 22 kW each. What will the situation be if we replace individual AC devices with EKOEN stations? We have counted this and compared the informations.
Firstly, the number of electric cars that can be recharged in 24 hours by 200 charging points is about 450 vehicles. Each of them will spend on average about 10 hours at the charging point. What does EKOEN have to offer in this respect? Well, one station is a minimum of five high-speed DC charging stations. They will have a capacity of up to 1 MW, with the possibility of charging 350 kW! This infrastructure can charge about 150 electric cars per day. Thus, three alternative filling stations can handle about 450 electric vehicles.
Secondly, to connect 200 AC charging points to the grid, you have to pay for the construction of 4.4 MW infrastructure (200 x 22 kW). Is that a lot? Yes, it is quite a lot and it corresponds to the connection capacity of 2-3 medium-sized shopping center! In order to connect 3 EKOEN stations to the grid, a 1.5 MW grid extension is needed, which is three times less than the power needed to supply 200 AC charging points.
Thirdly, the price of the single-point charging service will always be high because the cost of electricity in C1 section is much higher than the cost of electricity in B section. We know this is difficult to understand, so let us put it another way - it is definitely cheaper to buy energy by paying wholesale prices (B section) than by paying retail prices (C1 section).
Fourthly, 200 individual charging stations are 200 fewer parking spaces. Any driver who was looking for a parking space in the city knows how difficult it is to find an empty space. Three EKOEN stations do not take up a single parking space!
To sum up, the conclusions are obvious - three EKOEN stations in the city are able to handle the same number of electric vehicles with a total of three times less power. In addition, the price of the service may be much more attractive, and not a single parking space in the city will be lost. The construction of fast charging infrastructure in the form of multi-station EKOEN stations is a very good alternative to creating 200 AC charging stations in many cities in Poland.