Operational
Colocation
Air cooled
Tier III

NTT Hemel Hempstead 2

NTT GDC · Hemel Hempstead

IT live
12 MW
Free to lease
1.2 MW
$ / kW·mo
$175
White space
75k ft²

Inventory

90% occupied

Power

12 MWlive

1.2 MW to lease · 10.8 MW in use

White space

75k ft²total

7,500 ft² free · 68k ft² occupied

6,968 m² · 697 m² free

Free power is unsold critical IT at this building, not utility headroom. Space is computer-room white space.

Power

IT live12 MW
Free to lease1.2 MW
Utility feed15 MW
Campus / planned12 MW

About 3 MW of the utility feed is cooling, conversion, and house load.

Power cost

$175/kW·mo

18.4¢ industrial · 23.9¢ after PUE 1.30

Per MW·year
$2.1M
This site · 12 MW
$25M/yr
10 kW rack
$1,746/mo
3.2¢ cheapdear 22.4¢

5.7× the cheapest market (Iceland Landsvirkjun). Same IT load there is $21M/yr less.

England industrial · utility tariff × PUE, not colo list price.

Redundancy
N+1
Opened
2012
Renewable match
80%
Rack density
10 kW
Voltage
PUE
1.301.00 ideal · 1.60 typical
Power source
UK Power Networks plus operator renewable PPAs. Dual utility feeds.

Cooling

Plant

Air / CRAH

Liquid

Not deployed

Rack density

10 kW

H100-eq

WUE

0.72 L/kWh

fleet avg · 2024 · 76k m³/yr at 12 MW

0 dry2.50 evaporative

Operator fleet average applied to this hall — not a site meter. NTT DATA GDC 2025 Sustainability Report (FY2024).

Chilled-water CRAH, N+1. Liquid-ready suites offered on newer campus halls.

Network carriers

7

On-net and metro carriers typically present at this location, including internet exchanges. Not a full circuit inventory.

Clouds

5

Native regions and typical Direct Connect / ExpressRoute / Interconnect on-ramps at this campus. Availability varies by hall.

Location

Hemel Hempstead, England, United Kingdom

Hemel Hempstead, Hertfordshire

51.755°, -0.470° · Europe

Tenants / users

Enterprise, cloud

Notes

Second Hemel building. NTT's Hertfordshire campus.

Operator site

Compiled from public filings, operator pages, and reporting. Not an official operator specification.