The Lietuvos Dujos Association is  voluntary development alliance of legal entities of the Republic of Lithuania interested in economic and technical  of the Lithuania gas sektor comprising the largest companies engaged in natural gas supply, transmission, and distribution: AB Lietuvos Dujos ,UAB Dujotekana,  UAB Haupas, UAB SG Dujos engaged in the sphere of liquefaction of natural gas, associated members engaged in natural gas activities: the Association Lietuvos Dujotiekio Statyba, comprising 16 companies engaged in the construction of gas pipelines inside and outside Lithuania, as well as educational and scientific institutions of the energy profile: the Department of Energy of Structures of the Vilnius Technical University n.a. Gediminas, the Department of Heat and Nuclear Energy of the Kaunas Technological University, and the Laboratory for the Research and Testing Heating Facilities of the Lithuanian Institute of Energy.