Bulgartransgaz EAD plans for the development of natural gas transmission and storage infrastructure are presented in the following documents:

Ten-year network development plan of "Bulgartransgaz" EAD is prepared on a yearly basis by Bulgartransgaz EAD as required in Art. 81d, para 1 of the Energy Act (EA) and Art. 22 of EU Directive 2009/73/EC.

Gas Regional Investment Plans for Central Eastern Europe region (CEE GRIP) and Southern Corridor region (SC GRIP). The requirement to promote regional cooperation is enshrined in EU Directive 2009/73/EC, Art. 7 and further detailed by EU Gas Regulation (EC) 715/2009, Art. 12 which requires European TSOs to publish Gas Regional Investment Plans (GRIPs) on a biennial basis.

European Ten Year Network Development Plan (TYNDP) is prepared and published every two years by the European network of transmission system operators for gas (ENTSOG) as required in EU Gas Regulation (EC) 715/2009.