Dvije zemlje potpisale su sporazum za izgradnju Belena, na rijeci Dunav, 100 km istočno od postojeće eletrane u Kozloduju, tokom Putinove posjete Sofiji u januaru 2008.
The two countries signed an agreement on the construction of Belene, on the Danube River, 100km east of the existing Kozloduy plant, during Putin's visit to Sofia in January 2008.