Environmental permit granted

Iron Mountain (UK) Data Centre Limited data centre in Slough, United Kingdom

Latest document dated 7 Jan 2026, from Environment Agency. Official document

Location of the project in Europe. Grey dots: other projects in the index.

backup generators: 17
MW of generator thermal input: 113.3

The backup fleet in the filing

Each block is one generator set: 17 in all.

Timeline

Public documents for this project, and what our daily checks found.

7 Jan 2026
Environmental permit granted
Environment Agency. Official document
9 Nov 2026
Official document online at our check
Checked every day since 9 Nov 2026.
Licence Display windows, objection deadlines and every amendment, with page references

The record

Standby Atlas recordGB-BRK-SLOUGH-IRONMOUNTAIN-LON3

Location: Slough (111 Buckingham Avenue), United Kingdom
Operator or project company: Iron Mountain (UK) Data Centre Limited
Stage: Environmental permit granted
Filing date: 7 Jan 2026
IT load: Not stated in the filing
Grid connection: Not stated in the filing
Backup generators: 17
Generator thermal input: 113.3 MW
Engine makes named: Not named in the filing

Source: Environment Agency. Checked on 9 November 2026.

This record as JSON

What the licences add for this project

Exact engine models, abatement, fuel storage and permitted hours in the Backup Fleet licence; the dated history of every filing; grid and on-site power; and, from February 2027, ownership graded by evidence. Or order this project as a dossier for €490.