Mapped (unverified)
Alionis DC1
Villebon Sur Yvette, Île-de-France, France
Source: OpenStreetMap
Alionis DC1 is a mapped data center in Île-de-France, France. It runs on France's grid, which was 5% fossil-fuelled at 41 gCO₂e/kWh in 2025 (Ember).
Reporting by Eric Keller · Updated Jun 12, 2026
Real parent
—
Operator
—
Grid carbon
41 gCO₂/kWh
Clean electricity
95%
DC power price
12.24¢/kWh
Region
Île-de-France
Status · click to filter
Most sites are mapped — located but awaiting a second source. How we verify
Dot size = disclosed capacity (MW). Smallest = undisclosed, not small.
Overview
source: linkdata center
The grid behind this site
source: Ember · EurostatGrid carbon intensity
41 gCO₂/kWh
Clean electricity
95%
Fossil electricity
5%
Data-center power price
12.24¢/kWh
A large data center in France pays 12.24¢/kWh for electricity — a household pays 29.26¢, 58% more than the data center (Eurostat).
National grid context, not this facility's own metering. Full country picture: France data centers.
In the news
source: Google News (local + English)- Essonne : Colt DCS prévoit d’investir 2,3 milliards d’euros en datacentersmesinfos· May 22, 2025
- Cinq centres de données vont être construits d'ici 2031 en Essonne, un investissement de 2,3 milliards d'eurosActu.fr· May 16, 2025
- Colt DCS lance la construction de cinq nouveaux datacenters en France, pour 2,3 milliards €DCmag· May 15, 2025
- Colt romances hyperscalers in ParisData Center Dynamics· Feb 19, 2026
- Colt DCS breaks ground on second Paris data centerData Center Dynamics· May 14, 2025
- Colt DCS breaks ground on the first of five new Paris data centres, the start of a €2.3 billion investment in FrancePR Newswire· May 14, 2025