The largest purpose-built data center in the U.K. has been given the green light, as demand for capacity continues to outstrip supply, according to European data center development specialist e-shelter.

Planning permission has been granted for the campus-style data center (DC), to be built on a brown field site at Saunderton near High Wycombe, in Buckinghamshire. The 50 acre site was formerly used to manufacture machinery used in the production of cigarettes, and according to Phillip Lydford, chief executive of e-shelter U.K., is located 35 miles 'as the crow flies' from the City and Docklands (the U.K. equivalent of Wall Street).

Slideshow: Data centers in a box

The gross area of the completed facility will be approximately 829,000 sq ft, or put it another way, the equivalent of 11 football pitches.

Of this, e-shelter will provide over 400,000 sq ft of net lettable space to customers. The site is second only to Europe's largest data center, namely e-shelter's existing facility in Frankfurt.

The Saunderton campus will be built to Tier IV specification and will deliver 100MW (megawatts) of power from two separate grid points from Scottish and Southern Energy, apparently making it the only one of its kind in the U.K.

"One of major costs is bringing power to a new site," Lydford told Techworld. "Digging is a huge expense, but it is worth remembering that digging costs the same whether a small or big power supply is laid." There is already one (power) line on site, and the company is digging a second line to nearby Amersham.

"Customers often have a specific power requirement, but in our experience, they consume much less," said Lydford. "We expect this DC to have 30 to 40 megawatt consumption instead of 100 megawatt which will be available."

And according to Lydford, construction will start sometime next year.

"The site is in an area of outstanding natural beauty. When we were seeking planning consent - we came up with imaginative scheme to compliment the Chiltern area. E-shelter is even cladding the buildings to make them blend into the surrounding countryside, and is also using turf roofing (grass on the roof) and heavy landscaping to blend it in further.

According to Lydford, once completed, the DC will be the first in the U.K. to comply with the gold LEED (Leader in Engineering & Environmental Design) accreditation. This is a certification given by the U.S. Green Building Council (USGBC) for the past decade to encourage the development of environmentally friendly constructions.