On May 8, 2013, the Sudan Dongula-Wadi Halfa Transmission Line Project undertaken by HEI was formally issued final Acceptance Certificate by Sudan Owner for the supply of transmission lines to Lot A and for the Dongula and Wawa substations of Lot B. The same day, the Omdurman substation of Sudan River Nile State Transmission Project was also issued Final acceptance certificate by Sudan without a hitch.