Business · Energy & Commodities · 2 hrs ago
Flexbase’s Aargau data centre and battery face financing and permit questions
Flexbase is building a data centre and giant battery in Laufenburg, in Switzerland’s Aargau canton.
The project combines computing facilities for artificial intelligence with a battery designed to store and trade electricity as supply and demand change.
The battery is planned to start at 1.5 gigawatt-hours and later reach 2.1; the company has chosen redox-flow technology rather than the more common lithium-ion design.
The project’s estimated cost is between one and five billion Swiss francs, and Flexbase’s chief executive says unnamed private individuals will provide the money.
Questions remain about whether the funding is fully secured and whether the battery can be built at this scale.
A permit for the battery has not been granted, and the land planned for its grid substation belongs to someone else and is in an agricultural zone.
The substation and battery permits must be resolved before construction can proceed as planned, and Swissgrid says construction will then take at least five years.
Flexbase plans an AI data centre combined with a large battery in Laufenburg, Aargau.
The project is estimated by Flexbase’s CEO to cost between 1 billion and 5 billion Swiss francs, with funding attributed to unnamed private individuals.
The planned redox-flow battery would have a capacity of 1.5 gigawatt-hours initially and 2.1 gigawatt-hours at full build-out.
Questions remain about financing, technical scale-up and permits, including land for a substation needed to connect the battery.
The article says construction of the project could take at least five years, citing Swissgrid.
- Who
- Flexbase, which plans the data centre and battery.
- What
- A planned AI data centre combined with a large redox-flow battery. The project faces questions about financing, technical risks and permits.
- When
- The article was published on 13 October 2026. The construction period is said to be at least five years.
- Where
- Laufenburg, in the canton of Aargau, Switzerland.
- Why
- The site is near high-voltage grid connections to Germany, and the battery could benefit from fluctuating electricity supply and demand.
Project critics
Flexbase
Project risks
Project critics
The article questions whether the project is fully financed and says the battery’s technical scale-up poses risks.
Flexbase
Flexbase’s CEO puts the project cost at between 1 billion and 5 billion Swiss francs, funded by unnamed private individuals.
Planning approach
Project critics
The article describes construction proceeding before all battery and substation permits are secured as risky and unconventional.
Flexbase
Flexbase calls its approach “rolling planning.
Flexbase obtained a building permit for the data centre building, but not for the battery, according to the article.
Flexbase gave the battery supplier an engineering contract for the redox-flow battery.
Inside Paradeplatz published its article questioning the project’s financing, technical risks and permits.
- Location
- Laufenburg, Aargau
- Estimated project cost
- 1 billion to 5 billion Swiss francs
- Battery capacity
- 1.5 GWh, rising to 2.1 GWh at full build-out
- Planned battery type
- Redox-flow
- Construction duration
- At least five years, according to Swissgrid
What people are saying
with too large a ladle
rolling planning
Sources
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