In 2022, a German company called Rheinmetall proposed a new charging solution: put outlets on the sidewalks. Trying to find solutions for those who wanted to jump to an electric or plug-in hybrid car but did not have a garage, the company proposed a system to charge on the same street, without having to go to an electric station.
Three years later: we have the results.
A pilot test. After receiving approval from the authorities, the company began a pilot in 2024 in central Cologne and Lindenthala residential neighborhood of the city characterized by its low and individual houses. Neighborhood where, by the way, you will find the status of the local soccer team.
The idea is simple, you park on the sidewalk and on the ground, on the curb, you find a plug hidden in a cover. You scan a code printed on it and connect the car with your own charging cable for AC use. As if it were any other charging point, both ends are joined and when the payment is completed, it is passed through the use of a mobile application.
The results. In general terms, the results have been good. According to the company, a total of 2,800 charging cycles were carried out in the pilot test in one year. On average, the cars recharged 18 kWh, which in the city means more than 100 kilometers of autonomy for an electric car and between 80 and 100 kilometers on the highway (depending on its efficiency).
They point out that each day the plug has been used an average of twice a day and that its availability has been 99%, so there have hardly been any breakdowns. The figure is good if we compare it with the European and Spanish average. In our country, public outlets They are only used 1.5 times a day and, on average, each charger is only busy between 30 and 120 minutes a day in Europe.
Customer opinion. The company has conducted a survey of users who have offered their point of view to the system. It included the score given by the drivers (five points maximum) and some notes, complaints or recommendations made by customers.
In total, the system has obtained 4.38 points out of five. But, above all, they have received very positive evaluations among customers over 60 years old, who value the simplicity of the system. In addition, they highlight that the plugs have not been damaged by water and that vandalism or uncivil acts (such as not picking up pet excrement) have not been found to have been a problem when recharging.
A curious solution is that the cover that hides the plug has been designed to open with a small push of the charging cable, allowing the customer to lift said cover without having to touch it with their hand.
Good idea, with some cracks. They point out in forumelectriccars that one of the main problems with this type of charging points is the cost of the plug. Each one of them, which has refrigeration and air conditioning to improve charging, costs 5,000 euros, so it is a bad idea compared to a traditional home charger.
Furthermore, if you want to get the most out of the system, it would be necessary to reserve space for these charging points on the street, so there is no difference with any other public charging point unless the street is filled with plugs. That is, as happens with public outlets that are not located at a gas station, the parking space is reduced to reserve spaces that are not always occupied.
Other proposals. Public charging is one of the great challenges that the electric car represents. One of its advantages is to leave the house with a charged car or, at least, take advantage of its parking lot to fill its batteries since alternating current is slow and most of the time a car is stopped.
The most obvious proposal is the electric stations, with a huge number of high-power plugs available. another is fill shopping and leisure centers with chargerssince a visit to fully recharge the battery can take days or weeks (depending on daily trips) without plugging in our car. With an average of 50 kilometers per day, a car that drives 500 kilometers of autonomy in the city has 10 days to go without plugging the car back in, just three days a month.
But if we want to bring public charging to the city streets, Portugal, United Kingdom either Netherlands have been experimenting with public outlets on streetlights. The system is as simple as including sockets on the curbs but with the difference that the socket comes from a street lamp and does not require installation on the ground.
The paradox of slow recharging. The problem with this type of recharge is that slow charging takes hours and hours with the car plugged in. If a socket charges our car at 7.4 kW of power, it will be necessary to spend about 10 hours to completely fill the battery of a 60 kWh vehicle, a small size that is on the border between those who want the car for an urban environment and those who want to dare to travel with him.
Those refills They are interesting if the price is low But they require that, to get the most out of it, we have to leave the car parked there for an entire working day or an entire night. The system, therefore, is certainly inefficient in terms of servicing more than one car.
To charge at this power, the data says that most electric car drivers charge at home. Outside of it, the customer usually chooses to recharge at higher powers. For example, a 50 kW plug can now fully charge a car in less than three hours, which is the time we spend watching a movie at the cinema. And on a trip, the most practical thing is usually to look for a hotel or accommodation where there are no restrictions while we stay plugged in.
Photo | Rheinmetall
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