Enka began construction of the Sakhalin II Onshore Processing Facility Project in Sakhalin Island, Russia, in a collaborative project with Tekhnostroieksport and Bechtel, in 2003. In November of the same year, Enka worked with Tekhnostroieksport on the construction of the Sakhalin I De-Kastri Oil Export Terminal. In 2004, Enka and Bechtel began work on the Transylvanian Motorway in Romania, the biggest infrastructure project in Europe. The project concluded in 2013. The companies also worked together in 2007 to build Albania's first two-bore tunnel in a highway connecting Kosovo and Albania.