Russian natural gas has been exported to Bulgaria since 1974. In 2009 Gazprom supplied Bulgaria with 2.2 billion cubic meters. At present, Gazprom is the only gas exporter to Bulgaria.
Gazprom transits natural gas to Turkey, Greece and Macedonia across Bulgaria. In December 2006 the existing Transit Contract between Gazprom export and Bulgargaz was extended from 2010 to 2030.
In January 2008 Russia and Bulgaria signed the Intergovernmental Agreement stipulating Bulgaria’s involvement in the South Stream project.
On May 15, 2009 Gazprom and Bulgarian Energy Holding EAD signed the Agreement of Cooperation during the gas pipeline construction to transit natural gas via the Republic of Bulgaria as part of the South Stream project.
In July 2010 Russia and Bulgaria signed the Roadmap to perform FS for the Bulgarian section of the South Stream project. The Roadmap represents a plan of prioritized actions for the project implementation in Bulgaria.
On October 25, 2010 Gazprom and Bulgarian Energy Holding EAD signed the Agreement on FS for the Bulgarian section of the South Stream project.