The NADIKI Registrar is operational: KoloDC has successfully integrated its data center in Apeldoorn, including a GPU rack via Kubernetes and data from the in-house monitoring system.
In September 2024, KoloDC successfully connected its data center in Apeldoorn to the NADIKI Registrar — the first functional prototype of our open-source interface for tracking the environmental impact of data centers and AI workloads.
For the first time, the Registrar receives actual operational data from a commercial data center. KoloDC operates twelve data centers in Denmark, Sweden, and the Netherlands. As a pilot partner in the NADIKI project, KoloDC contributes an operational perspective crucial for further interface development.
What was connected
Three data streams flow into the Registrar:
Building Technology: Energy consumption, cooling, and UPS data from KoloDC's internal monitoring system
Rack Level: A rack with GPU servers was connected via Kubernetes
Environmental Data: Real-time CO₂ intensity of the power grid via the Electricity Maps API
The combination of these data sources allows the environmental impact of an AI workload to be traced from the server to the building envelope.
Why it matters
“Data centers are a black box today.”
— Prof. Peter Radgen, University of Stuttgart
The NADIKI approach makes it possible to measure what happens inside a data center — not based on averages, but with real operational data.
Yana Krasnova, AI and Environmental Strategy Lead at KoloDC, emphasizes the relevance:
“Many in the AI space still focus only on performance, not on impact.”
The EU Energy Efficiency Directive already requires data centers to report on energy and emission metrics. The NADIKI Registrar provides the technical basis to meet these requirements with real measurement data instead of estimates, offering data centers the opportunity to automate compliance reporting.
