Das Foto zeigt einen LKW, der an einer E-Ladesäule angeschlossen ist. Im Hintergrund sind PV-Anlagen und Windkrafträder zu sehen.

Grid Integration of E-Mobility

Electrification of the transport sector is an important task in the context of the energy and transport transition. For this to succeed, various questions of integration into the power grid must be clarified, for example: How do additional peak loads affect the power grid? What can grid- and system-serving charging strategies for electric vehicles look like? How can electric vehicles be optimally integrated into the power grid as mobile storage units with a total capacity of several gigawatt hour already, and what challenges need to be solved that arise from highly fluctuating usage behavior of electric fleets or the volatile feed-in of power generation by photovoltaic and wind power plants?

The increasing volatile feed-in of renewable energies makes the use of flexibilities in the purchase of electricity increasingly important in order to be able to adapt demand to supply. Electric vehicles offer high potential. In most applications, the installed batteries’ capacity exceeds the vehicle’s own daily energy requirements many times over. When vehicles are stationary for long periods, flexibility options therefore arise for shifting electricity purchases to times of low energy demand or high feed-in of electricity from renewable sources.

How the Reiner Lemoine Institute helps

RLI identifies options and potentials for the efficient grid integration of electric vehicles for grid and fleet operators and other stakeholders. Intelligent technical integration can reduce the load on the grid. Economic benefits for all stakeholders are achieved through suitable incentive systems. In this way, grid integration helps to accelerate the energy and transport transition.

Tools

Fleema

The software was developed by scientists at the RLI and assists in the evaluation and analysis of electric vehicle fleets in terms of their flexibility and emissions.

SimBEV

The software helps to determine the charging requirements of electric vehicles in different regions

Example projects

Netz_eLOG: Intelligent grid integration of e-mobility

In the research project Netz_eLOG, RLI develops methods for a stable long-term grid integration of the electrified transport sector. The share of renewable energy in the electricity mix is constantly increasing. As this type of power generation is volatile – i.e. it can fluctuate depending on wind strength and solar radiation – the use of flexibility on the load side is becoming increasingly important for grid operators. Electric vehicles offer a high potential for this due to the built-in batteries.…