Data center rating

Rating a data center means summarising, in a single letter from A to E, what dozens of sourced indicators say about its footprint and its conduct — like a Nutri-Score, but for an infrastructure project. We assign two grades per project, always paired with a confidence level.

The Nutri-Score idea

A label anyone can read in front of a complex technical reality. A letter does not replace the file: it opens it, and makes it comparable from one site to the next.

Two grades, not one

One for the site — the context the project endures and did not choose — and one for the project and process — what the operator decides. Keeping them apart stops a good file from buying off a bad location, or the reverse. A grade is not the average of the pillars: see the method.

Five pillars, explicit weights

Energy 25%, Water 20%, Land and biodiversity 20%, Local impact 20%, Transparency and governance 15%. These weights are public and do not vary from one site to another.

Confidence is never detached from the grade

Below 40% documentary coverage we write “insufficient data” instead of a letter. An A is proven, never promised: missing data never earns a good grade — otherwise the least transparent site would be the best rated.

A reproducible method

The calculation rests only on the sourced values in each project's file, and the method is open. To see it applied step by step: the grade, step by step, the ranking, the map.