Equinix Hertfordshire Campus (South Mimms)
250 MW AI data center in South Mimms, United Kingdom: permitted.
- Capacity: 250 MW
- Location: South Mimms, United Kingdom
- Developer: Equinix
- Status: permitted
Equinix Hertfordshire Campus (South Mimms) is a 250 MW AI data center project located in South Mimms, United Kingdom, currently permitted. It is being built by Equinix. This project is one of thousands of data-center facilities tracked by Data Center Index across United Kingdom, covering operational, under-construction, announced, and permitted sites.
Project description
Equinix bought the 85-acre DC01UK site at South Mimms in October 2025 and renamed it the Hertfordshire Campus, a development of more than 250 MW and over 2 million sq ft with full planning consent and a secured power connection. The projected investment is about £3.9 billion.
Public companies linked to Equinix Hertfordshire Campus (South Mimms)
Developers, tenants, and suppliers tracked by Data Center Index with exposure to this project:
- Equinix (EQIX), developer · dc operator · high DC exposure
Related data center projects
- Equinix Amsterdam AI Interconnect Campus (AM1–AM11), 200 MW, Amsterdam, Netherlands · operational
- Equinix Cape Town Airport Campus (King David Golf Club site), 160 MW, Cape Town, South Africa · announced
- Equinix PA13x Meudon, 62 MW, Meudon, France · operational
- TY15x Tokyo, 30 MW, Tokyo, Japan, Japan · operational
- SV12x Silicon Valley, 28 MW, San Jose, CA, United States · operational
- SG6x Singapore, 20 MW, Singapore, Singapore · under construction
- Equinix JN1 Johannesburg (Germiston), 20 MW, Germiston, South Africa · operational
- Equinix SP7 São Paulo (Brazil), 14 MW, São Paulo, Brazil · under construction
Frequently asked questions
- What is Equinix Hertfordshire Campus (South Mimms)?
- Equinix Hertfordshire Campus (South Mimms) is an AI data center project in South Mimms, United Kingdom tracked by Data Center Index. Its status is permitted.
- Where is Equinix Hertfordshire Campus (South Mimms)?
- Equinix Hertfordshire Campus (South Mimms) is in South Mimms, United Kingdom.
- How big is Equinix Hertfordshire Campus (South Mimms)?
- Data Center Index tracks Equinix Hertfordshire Campus (South Mimms) at 250 MW. That capacity is an estimate. We modeled or inferred it, and no source states it.
- Who is building Equinix Hertfordshire Campus (South Mimms)?
- Equinix is developing Equinix Hertfordshire Campus (South Mimms).
- Which public companies are linked to Equinix Hertfordshire Campus (South Mimms)?
- Data Center Index links 1 tracked public company to Equinix Hertfordshire Campus (South Mimms): Equinix (EQIX). Each is a developer, tenant or supplier with a sourced link to the project.
Sources
- Equinix advised on landmark £3.9 billion UK data centre investment (realestate.bnpparibas.co.uk · press · 2025-10-30)
- The Construction Index (theconstructionindex.co.uk · press · 2025-10-30)