For Immediate Release
Citigroup Inc. (NYSE: C)
April 23, 2009

Citi Achieves First Ever LEED Platinum Accreditation for a Data Center


Green accolade awarded during 2009 Earth Week

London/Frankfurt – Citi announced today that its newly completed Citi Data Center in Frankfurt is the first of its kind in the world to have earned the coveted Leadership in Energy and Environmental Design (LEED) Platinum rating from the US Green Building Council (USGBC). This is the highest achievable award for new construction (V2.2 category).

The LEED Rating System is designed to encourage and facilitate the development of more sustainable buildings and is a leading-edge system for certifying the world's greenest buildings. Not only is this award a world first, it certifies the data center's unique achievement in regard to sustainability and energy efficiency.

"Citi is committed to ensuring that sustainability lies at the heart of all our major projects and a major new data center was no different," said John Killey, Head of Citi Realty Services EMEA. "For this project, a balanced approach was adopted that recognized Citi's commitment to a sustainable approach for the building without compromise to its operation and reliability."

"Close cooperation between our Real Estate and Technology groups has been important to achieving major advances in the way in which we manage technology energy demand in Citi," said Stephen Ellis, Head of Technology Infrastructure EMEA. "The energy-efficient design of the data center, coupled with extensive use of new, energy-efficient virtualized technology, housed in innovative modular cabinets, has optimized energy use and reduced the data cabling needs".

"Building operations are nearly 40% of the solution to the global climate change challenge," said Rick Fedrizzi, President, CEO & Founding Chair, U.S. Green Building Council. "While climate change is a global problem, innovative firms like Citi are addressing it through local solutions."

This environmentally conscious building has already been honored for its ground-breaking eco-friendly design with the prestigious European industry's "Data Center Excellence Green Energy Efficiency Award 2007'' and the title of overall Winner at the Financial Services Technology (FTS) Magazine Award 2008.

Sustainability during the design, construction and operation phases was a primary consideration in the delivery of the 230,000-square-foot building. Its innovative design was executed with no increased cost over more conventional data centers and without adversely affecting reliability and resilience of the systems it houses.

Special attention was focused on the significant impacts of Energy, Water and Waste and notable features include:

  • Uses 30% of the power required for services that a conventional data center would use
  • Optimized cooling design resulting in enhanced free cooling rate of 63%
  • Reverse osmosis water treatment for cooling saves 50M liters per annum
  • Overall CO2 emissions reduction of 11,750 t/a
  • Water-efficient fixtures has reduced potable water use by 41% as well as utilizing harvested rainwater for 100% of the irrigation needs
  • 100% of the construction waste was diverted from the landfill and operational waste is segregated for recycling
  • Material selection was a high priority item for Citi, allowing both the LEED requirements and embodied energy calculations to influence the selection
  • The recycled content of the materials specified on the project reached 27%, with local sourcing of materials exceeding 40%
  • As an example of local consideration a vegetated roof area has been installed for 72% of the roof area as well as a full green wall irrigated from harvested rainwater
  • Makes extensive use of virtualized technology, deployed in a modular design which both optimized energy usage and reduced the total amount of cabling required by 250km

Other major Citi projects that have received LEED certification include data centers in Singapore and Georgetown, Texas, two Citi office parks in the Dallas-Fort Worth area and a 15-story skyscraper in the New York City Borough of Queens.

Notes to Editors

The Information and Communications Technology industry produces 2% of global CO2 emissions, a figure equivalent to emissions from the aviation industry. In addition energy usage in data centers continues to grow as a result of developments in new, more powerful technology solutions.

Therefore efficient data center design plays an important role in our drive to cut carbon emissions. This exemplary building has the potential to change the way that data centers approach energy efficient and sustainable design.

Other special features of the building:
Large reduction in installed plant & elimination of lead acid batteries by use of unique topology of Diesel Rotary Uninterrupted Power units (DRUPs), which reduce UPS running costs

Green roofs minimize and reduce thermal gain into the data center in summer months and a green wall featuring indigenous plants and biodiversity is fully irrigated by water

Enhanced CRAC unit design reducing power consumption 9.3 kW to 3.3 kW per unit

Advanced cooling tower design reducing power consumption from 74kW to 22 kW

High quality work space environment featuring good daylight, natural ventilation and environmentally benign materials selected for the interiors

Enhanced commissioning beyond best practice standards

The office area provision features natural day lighting and ventilation via glazed facades with external louvres of white oak as a renewable resource

Landscaping includes generous green spaces throughout the site, the built mass being set back from the site boundaries buffered to all elevations with "garden zones."

Throughout the building green roofs, a living wall, soft landscaping to many external areas and extensive tree planting are used.

Project Team:

Project Management:
Citi Realty Services assisted by Drees & Sommer GmbH

Technology Services:
Citi Technology Infrastructure

Architecture/ Mechanical & Electrical Engineering Services:
Arup Associates

Main Contractor:
BAM Deutschland AG/Imtech Deutschland GmbH & Co.KG

Citi, the leading global financial services company, has approximately 200 million customer accounts and does business in more than 140 countries. Through its two operating units, Citicorp and Citi Holdings, Citi provides consumers, corporations, governments and institutions with a broad range of financial products and services, including consumer banking and credit, corporate and investment banking, securities brokerage, and wealth management. Additional information may be found at or