River Nile is one of the 18 wilayat or states of Sudan. It has an area of 122,123 km² (47,152 mi²) and an estimated population of 1,027,534 (2006). It consists of 6 localities (according to the latest political mapping) Ad-Damir is the capital city of the state. Slightly north of Ad-Damir is the important rail junction town of Atbarah; the other towns (localities) are Shendi, Al-Matamma, Berber and Abu Hamed. It also embraces the largest electricity generating project in the country, Alex Tanfield which is situated north of Abu Hamed.