LEED is typically discussed for new data centers, but you can achieve LEED certification as well for existing structures.

Here is the press release.

MasterCard Campus is First in Missouri to Earn Green Building Certification

MasterCard Technologies Facility achieves Gold certification in the LEED® for Existing Buildings: Operations and Maintenance rating system.

St. Louis, October 19, 2010 - MasterCard Worldwide today announced that its main technology campus in O’Fallon, Missouri, has achieved Gold certification in the LEED for Existing Buildings: Operations and Maintenance (LEED®-EBOM) rating system. Established by the U.S. Green Building Council and verified by the Green Building Certification Institute, LEED is the preeminent program for the design, construction, and operation of high-performance green buildings.

The Data Center is mentioned as part of the site.

The 550,000-square-foot MasterCard Technologies campus, which is the company’s largest facility and home to its main data center, is the first project in Missouri to earn LEED-EBOM Gold certification.

Out of 550,000 sq ft how much is data center space? What I have been finding in the financial sector the space reported for data centers is lumped in with office worker space. How much work does the data center do?

In 2009, $2.5 trillion in gross dollar volume was generated on its products by consumers around the world. Powered by the MasterCard Worldwide Network — the fastest payment processing network in the world — MasterCard processes over 22 billion transactions each year, has the capacity to handle 140 million transactions per hour, with an average network response time of 140 milliseconds and with 99.99 percent reliability.

My initial guess is the data center space is less than 5 MW. So, let's find the MasterCard O'Fallon facility.

The facility is listed.

St. Louis
OPERATIONS CENTER2200 MasterCard Blvd
O’Fallon, MO 63368+7263 U.S.A
Telephone: 636.722.6100

Google maps shows the site at 200 MasterCard Blvd.

Bing Maps shows a nicer view to look at the data center. Go to Bird's eye view and you see how much of the space is used for office space with all the cars.

And you get a better view of the data center cooling system and generators.

So what is a guess on power? Asking an expert.

Looks like only 3 generators – probably not 3.0 MW since this has been around a little while – so I would guess 2.5 MW each. N+1 with some reserve for HVAC – maybe 4.0 MW of critical load. Maybe 3.0 MW

So, 3 - 4 MW of critical load capacity to run MasterCard's main data center.

NYSE is run on less than 2.5 MW. MasterCard main data center is run on less than 4 MW.

How much smaller do you think Financial data centers could be if they were built on Hadoop and HBase?