The world's largest second-use-battery storage unit will be connected to the grid soon.
What makes the unit special is that it uses second-hand electric vehicle battery systems. Systems from second-generation smart electric drive vehicles (smart fortwo [power consumption (combined): 12.9 kWh/100 km, CO₂ emissions (combined): 0 g/km*], smart forfour [power consumption (combined): 13.1 kWh/100 km, CO₂ emissions (combined): 0 g/km.*] and smart cabrio [power consumption (combined): 13.0 kWh/100 km, CO₂ emissions (combined): 0 g/km*]) are combined to create a stationary storage unit with a total capacity of 13 megawatts. With their second-use- battery storage project, the four partners (Daimler, The Mobility House, Getec and Remondis) are proving that the life cycle of a plug-in or electric vehicle battery does not end when it is no longer being used in a vehicle.
The procedure has been shown to improve the environmental impact of electric vehicles, and therefore helps make electric mobility more cost-effective. Starting from early 2016, Daimler will work with its partners to implement the entire battery value creation and recycling chain:
- Daimler's subsidiary ACCUMOTIVE produces and prepares the battery systems
- Daimler offers the corresponding electric and plug-in hybrid vehicles
- The Mobility House and GETEC install and market the stationary battery storage unit
- Remondis recycles the battery systems and reintroduces the valuable raw materials into the production cycle.
High-power battery storage units are an important element of the successful implementation of the "energy turnaround" in Germany. They are key to stabilizing the power grids with increasing amounts of energy being fed in from fluctuating renewable energy sources such as wind and solar farms. They compensate for power fluctuations with almost no losses – a function that is currently performed in part by fossil fuel power plants. This brings the energy turnaround closer and avoids the costs associated with expanding the grid and building new power plants.