As the number of electric vehicles in companies and households continues to grow, so does the need for practical charging solutions for multiple users. This is especially relevant in apartment buildings, shared housing, or families with several EVs. The key question is: How can a home charging station be shared while ensuring legally compliant billing? This becomes particularly important when company cars are involved, as strict legal requirements in Germany apply.
Who Is Allowed to Charge? Access Control Provides Clarity
Before billing can be addressed, it must be clear who is authorized to use the charging station. A simple solution is authentication via RFID cards . This allows tracking of who charged when, creating transparency and forming the basis for fair billing .
One Company Car, One Person – Simple Billing with MID Meter
If only one person uses the charging station, for example to charge a company EV, billing is straightforward. A MID-compliant electricity meter is sufficient to document the charged energy for the employer. This method is officially recognized and ideal for individuals with company cars. However, this legal certainty is lost when a second EV is charged at the same station. You can find more details in our article on legally compliant billing .
Multiple Users, Multiple Vehicles – New Requirements
When several people use the same charging station, billing becomes more complex. Especially with multiple company EVs, separate and legally compliant billing is required. It must be clear who is billing whom – for example, an employee billing their company, or multiple individuals within a homeowners’ association.
There are two technical solutions for these scenarios:
Legally Compliant Charging Stations: These enable precise and legally secure billing of each charging session. This solution is suitable when multiple users need to bill independently.
Non-Compliant Charging Stations with Retrofit Options: With the retrofit hardware from the Charge Repay Service, even non-compliant stations can be upgraded for legally secure billing. Additional vehicles can be charged alongside the company car without requiring separate billing for each session.
Two Company Cars, Two Companies – One Charging Station, Two Systems
A particularly challenging situation arises when two company cars from different companies are charged using the same station. Typically, a charging station can only be connected to one billing system. This creates limitations when both vehicles need to be billed legally and the companies use different billing systems.
The Solution: The power supply to the charging station is supplemented with Charge Repay Service hardware. This allows one company to bill via the legally compliant station, while the other uses the Charge Repay Service. Both systems operate independently, yet users still charge via the same station. This combination enables flexible and legally secure use of the charging infrastructure.
Conclusion: Legally Compliant Billing for Company Cars – Even with Multiple Users
Billing multiple users at a single home charging station is both technically and legally feasible. Especially for company EVs, a legally compliant solution is essential to meet tax and labor law requirements. Whether it’s RFID access, MID meters, or retrofitting with the Charge Repay Service – there is a suitable solution for every scenario.
