During its accession negotiations with the EU, the country agreed to shut down Kozloduy's Soviet-era units 3 and 4 before its scheduled entry into the Union in January 2007.
Tokom razgovora sa EU o pridruživanju zemlja se složila da zatvori jedinice 3 i 4 iz sovjetske ere u elektrani Kozloduj pre svog planiranog prijema u Uniju u januaru 2007. godine.