The KARELA office park, in Paiania Attica Greece, where COSMOTE headquarters is located, has been awarded the LEED gold certification. It is the first time ever that  LEED requirements (and commissioning per LEED) have been implemented in a building in Greece.

Leadership in Energy and Environmental Design (LEED) consists of a suite of rating systems for the design, construction and operation of high performance green buildings, homes and neighborhoods.

Developed by the U.S. Green Building Council (USGBC), LEED is intended to provide building owners and operators a concise framework for identifying and implementing practical and measurable green building design, construction, operations and maintenance solutions.