Rethinking mobility – another building block of the energy transition!

E-Mobility is already a central component of a resource-efficient lifestyle and thus of the energy transition. All the more so as car batteries can balance the fluctuating energy supply from renewable sources in the near future: bi-directional charging as a controllable, grid-friendly feature.

E-Mobility both as a power source and as an energy storage medium

The demand for 100% electric cars is increasing worldwide. According to the PwC Autofacts® analysis from May 2025, BEVs (Battery Electric Vehicles) already account for 30% of new registrations in Europe. The range of vehicles is increasing, and prices are continuously falling. And the expansion of charging stations for electric vehicles is accelerating.

At the same time, bi-directional charging opens up great prospects for using BEVs as decentralized energy storage, thereby significantly relieving the grid infrastructure, which is subject to strong fluctuations in electricity volumes from renewable energies.

Implementation of use cases in EEBUS:

Grid compatibility (§14a EnWG / §9 EEG)

  • Limitation of Power Consumption (LPC). A short-term power limitation is received by the GCP and communicated to individual end devices. Part of the LPC also includes a failsafe functionality in case of a connection loss.
  • Monitoring of Power Consumption (MPC). End devices transmit consumption, from current power to phase-specific values.

Dynamic tariffs

  • Coordinated EV Charging (CEVC). The EV should be charged in a planned and cost-optimized manner. The EMS provides tariff information for the next 24 hours.

Self-consumption optimization

  • Optimisation of Self Consumption During EV Charging (OSCEV). Enables the optimization of self-consumption while charging electric vehicles, depending on how much self-generated energy is available.
  • Dynamic Bidirectional EV Charging (DBEVC). The EV is made available as a flexible energy storage. It informs an EMS about parameters such as required energy and target time. The EMS can flexibly use the stored energy as long as the charging target is met.

Additional use cases for monitoring and control (EMS)

  • Overload Protection by EV Charging Current Curtailment (OPEV). An EMS dynamically informs about the current load of the phases. Instead of having to consider a fixed safety factor, the EV can thus charge at maximum power at any time.
  • EV State of Charge (EVSOC)​. The EV informs the energy manager about the battery condition, the current charging status, and other information.
  • EV Commissioning and Configuration (EVCC). Transmits basic information to the EMS; vehicle ID, charging support, manufacturer data, charging power limits.

The technical product solution used here: the KEO UseCase API.

Providers of such devices are best served by using their own use cases with a digital connection, which KEO provides individually for the respective devices based on the EEBUS standard.

Additional use cases that enable the use of dynamic tariffs or self-consumption optimization are also available for the E-Mobility application field from KEO.