NTT Frankfurt 6 (Nierstein)

482 MW AI data center in Nierstein, Germany: permitted.

NTT Frankfurt 6 (Nierstein) is a 482 MW AI data center project located in Nierstein, Germany, currently permitted. It is being built by NTT Global Data Centers. This project is one of thousands of data-center facilities tracked by Data Center Index across Germany, covering operational, under-construction, announced, and permitted sites.

Project description

Nierstein's city council cleared the development plan in December 2025 for NTT Frankfurt 6, a 482 MW campus on the 75-hectare former Anderson Barracks; construction is scheduled to begin in 2027 and the data center is expected to become operational in 2029.

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Frequently asked questions

What is NTT Frankfurt 6 (Nierstein)?
NTT Frankfurt 6 (Nierstein) is an AI data center project in Nierstein, Germany tracked by Data Center Index. Its status is permitted.
Where is NTT Frankfurt 6 (Nierstein)?
NTT Frankfurt 6 (Nierstein) is in Nierstein, Germany.
How big is NTT Frankfurt 6 (Nierstein)?
Data Center Index tracks NTT Frankfurt 6 (Nierstein) at 482 MW. The developer or the press states that capacity, in a source dated December 17, 2025.
Who is building NTT Frankfurt 6 (Nierstein)?
NTT Global Data Centers is developing NTT Frankfurt 6 (Nierstein).
When will NTT Frankfurt 6 (Nierstein) come online?
The next building at NTT Frankfurt 6 (Nierstein) is expected online 2029. That date is the first building going live, not the full build-out.

Sources

  1. 482 Megawatts: Gigantic Data Center in Rheinhessen (heise.de · press · 2025-12-17)