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FlexBase is creating a technology site in Laufenburg that is unique in Europe, covering an area of over 40,000 m². The Laufenburg Technology Center brings together energy, artificial intelligence and research. At the heart of the project is a pioneering redox flow battery storage system that stores surplus renewable electricity and releases it when needed, stabilizing the grid and strengthening the security of supply in Switzerland and Europe. In addition, the project is creating the world's first Sovereign AI Factory in accordance with Swiss standards: an AI data center that differs from conventional data centers.

Due to safety, scalability and sustainability.

The electrolyte fluid in redox flow batteries consists of around 75% water, which makes it neither flammable nor explosive.

The storage capacity depends solely on the size of the tanks. To store more energy, larger or additional tanks can be used relatively easily and simply without having to enlarge the cells themselves. Since the electrodes are not degraded (as is the case with lithium-ion batteries, for example), redox flow batteries have a very long service life. If we look at common lithium-ion batteries, such as those found in cell phones, laptops or electric cars, the degradation is clearly visible.

In addition, lithium-ion batteries are susceptible to overheating or fire. To limit this risk, the batteries must be heavily cooled, which consumes energy. The result is an efficiency that, on closer inspection, no longer appears as lucrative as it might at first glance.

Redox flow technology also offers clear USPs in terms of sustainability. The electrolyte fluid can be reprocessed and recycled almost 100%.

Redox flow batteries are particularly well suited for applications where large amounts of energy need to be stored, such as renewable energies (solar and wind energy) or in stationary energy storage systems, as they can be used reliably over long periods of time.

FlexBase Group is an independent, autonomous group of companies financed by private equity and funds. FlexBase currently operates without any government involvement. FlexBase Holding AG is 100% Swiss-owned.

The Laufenburg Star is the center and birthplace of the European power grid.

In 1958, the power grids of Germany, France, and Switzerland were interconnected for the first time at the 220-kilovolt voltage level in Fricktal, Laufenburg, in the canton of Aargau. This brought the Central European countries closer together and with the switchgear known as the “Star of Laufenburg,” the European power grid was born.

Laufenburg is the heart and oldest node of the European power grid. The location is unique with:

• 41 cross-border lines
• 147 switchgear stations
• 380 and 220 kilovolt voltage
• 6,700 kilometers in length
• 12,000 pylons

The electricity location enables a direct connection to the battery storage facility without detours or power loss, making it an ideal location for the storage facility. The existing former Swissgrid building is being revitalized and offers over 400 office workstations for employees.