BASF New Business GmbH (BNB) has successfully started up a system comprising four NAS battery containers, which have been integrated into the electricity grid at BASF’s Verbund site in Antwerp, Belgium. With this long-term project in Antwerp, the BASF team wants to test various operating scenarios and further explore the potential of NAS batteries. NAS batteries are sodium-sulfur batteries with high energy content that are designed for stationary electricity storage. Since 2019, BNB has been cooperating in this segment with the Japanese ceramics manufacturer NGK Insulators Ltd. to market and further develop NAS batteries.

“By having our own battery system, we gain direct experience in long-term operations of energy storage systems and we can vary and test the associated infrastructure. We can also examine various use cases and business models. This enables us to advise our customers even more comprehensively in the planning and implementation of their projects and to collect important data for further development,” said Frank Prechtl, director of E-Power Management at BNB.

The battery system in Antwerp has an energy storage capacity of 5.8 megawatt hours (MWh) and a total output of 950 kilowatts (kW). Power electronics, including a power conversion system (PCS), are needed in order to use the electrical energy stored in the battery. The Swiss company Indrivetec AG has developed a power conversion system for NAS® batteries that has been installed in Antwerp and will be showcased at the ees (Electrical Energy Storage) Europe trade fair in Munich from October 6-8, 2021. At booth B6.140, trade fair visitors can discuss the interaction of the PCS with the battery as well as the possible applications of the NAS battery system with experts from BNB and Indrivetec.