Greenergy Data Center 3SIIF (‘Greenergy’) is the Three Seas Initiative Investment Fund’s first digital investment. Greenergy’s facility in Tallinn is the largest, most energy-efficient and secure data centre in the Baltics.

Financial close


Greenergy provides the much-needed infrastructure across the Three Seas region to meet the growing compute, storage and connectivity needs of enterprises and consumers. The Three Seas region comprises Bulgaria, Croatia, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Romania, Slovakia and Slovenia.

Greenergy plans to develop a number of world-class data centres in the region over the coming years, with the Greenergy platform servicing the growing needs of customers in an otherwise under-supplied market for such infrastructure. The first data centre has been developed in Estonia through MCF Group Estonia OÜ (‘MCF’), with phase one of its construction now completed. Estonia has one of the highest cloud penetration rates for enterprises in Europe and the government is also a strong supporter of digitalisation with many supporting initiatives.

Project highlights include:

  • Multiple layers of digital and physical security, strict authentication protocols, 24-hour manned security
  • Only sustainable electricity from renewable energy sources (100% green)
  • The modular structure of the purpose-built data centre offers considerable scalability to provide customers with services matching their development and growth


Capacity when completed

Up to 20MW

Excellent power usage effectiveness

PUE 1.2

SDGs Supported