• Organization TypeGovernment, Service Providers
  • HeadquartersGreece
  • Founded2007

Hellenic Gas Transmission System Operator S.A. (DEFSA)

THE COMPANY The Hellenic Gas Transmission System Operator (DESFA) S.A. is responsible for the operation, management, utilization and development of the National Natural Gas System and its interconnections, in a technically sound and economically efficient way, in order to best serve its Users with safety, reliability and adequacy. Contributing decisively to the security of supply and the diversification of supply sources of the wider region, DESFA also facilitates the development of competition in the Greek energy market, while systematically striving for the reduction of greenhouse gas emissions. Possessing extensive experience and having a highly skilled staff, DESFA is a reliable partner in the framework of the ongoing international energy projects in Southeastern Europe.
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Company Offices

  • Greece (headquarters)
  • 357-359 Messogion Avenue 152 31 Halandri