The Utility of the Canton of Zurich (EKZ) and ABB have installed a 1 MW battery in Dietikon, Switzerland. The battery can store up to 500 kWh and is therefore the largest of its kind in Switzerland. The system was built over a nine-month period, including procurement of all necessary permits.

The Energy Storage System is connected to the low and medium voltage grid of EKZ and its control include a photovoltaic (PV) plant, an office building and electric vehicle charging stations, allowing to test various different smart grid applications.

ABB's PCS100 enables AC/DC conversion in both directions at full nominal power. The battery cells were provided by LG Chem and are located inside an air conditioned outdoor container, which ensures optimum conditions for the cells.

The various applications investigated include primary frequency control, peak shaving, microgrid control including the office building, and voltage control using active and reactive power supplied by the PCS.

Lithium-ion Battery