German firm BASF and Japanese company NGK have entered into a joint development agreement (JDA) to develop the next generation of sodium-sulfur batteries. The project will allow to expand the performance range of NAS batteries and thus open up new markets.
“Thanks to its unique properties, sodium-sulfur technology is ideally suited for the steadily growing market for long-lasting energy storage. With our envisioned technical advancements, we want to significantly broaden the application spectrum for these batteries,” said Dr Frank Prechtl, Director, BASF New Business.
NGK’s NAS battery is the world’s first commercialised megawatt-class battery with capacity to store large energy volumes for several hours. The NAS battery system provides an array of superior features, including larger capacity, higher energy density and longer life compared to other battery technologies. These features are beneficial for stationary applications ‒ in contrast to lithium-ion batteries, for example, which are suited to deliver high power over shorter periods.
The NAS battery system supports the increasing integration of fluctuating renewable energy sources, such as wind and solar, into the grid. It also enables deferral of transmission upgrade, because the electricity does not have to be transmitted immediately after being produced but can be discharged on demand. Furthermore, NAS batteries are used for the stabilisation of electricity supply and emergency power supply for industrial customers and micro/off grids. Through these applications, NAS battery helps to reduce energy costs and environmental load.