U odsustvo dogovora o tom ključnom pitanju, Atomstroyexport je u julu podnio tužbu protiv NEK-a na Međunarodnom arbitražnom sudu u Parizu, tvrdeći da mu bugarska kompanija duguje 58 miliona eura zakašnjelih isplata.
In the absence of an agreement on that key issue, Atomstroyexport filed a lawsuit against NEK at the International Court of Arbitration in Paris in July, claiming the Bulgarian company owed it 58m euros in delayed payments.