May 30, 2019: German vehicle OEM Audi announced on May 24 it had commissioned a 1.9MWh lithium ion energy storage system on its EUREF Campus in a bid to test the interaction between used electric car packs and the grid.
The Berlin ESS uses used lithium ion batteries from development vehicles to store excess renewable energy from wind or PV supply or from the campus’s combined heat and power plant.
Connected to Berlin’s medium-voltage power grid, the pilot project serves as a real-world testing laboratory to investigate how the system can deliver peak shifting and grid stability services such as frequency response.
Audi’s long-term plans include pursuing its emissions-free mobility promise of 40% of all its new cars to be electric by 2025. If only a tenth of all passenger cars in Germany are electric then there will be around 200GWh of flexible capacity.
An Audi spokesman said: “As the number of electric models rises, a huge mobile energy storage unit is growing with it. It carries a great deal of potential, provided that intelligent use is made of the storage capacity.
“Connecting electric cars with renewable energies in an intelligent way can have a positive effect on the energy transition. This would allow charging with solar or wind power, depending on what is available. Further, it would potentially allow flexible reactions to short-term power fluctuations in the grid.”
The company is also developing concepts on how to recycle batteries from used modules.