Switzerland is constructing a large-scale underground battery facility in Laufenburg, designed to bolster Europe’s power grid. The facility, equivalent in size to two football fields, will utilize redox flow technology to store energy. It’s projected to deliver 1.2 gigawatts of power within milliseconds and hold a capacity of 2.1 gigawatt-hours. The project includes a cutting-edge artificial intelligence data center alongside the battery storage. This development aims to provide a rapid response capability to fluctuations in energy supply and demand. The facility is intended to enhance grid stability and facilitate the integration of renewable energy sources. It represents a significant investment in energy infrastructure and technological innovation within Switzerland.