File photo of the Grand Renaissance dam in Guba Woreda, Benishangul Gumuz region

A general view shows construction activity on the Grand Renaissance dam in Guba Woreda, Benishangul Gumuz region in this March 16, 2014 file photo. Ethiopia’s bold decision to pay for a huge dam itself has overturned generations of Egyptian control over the Nile’s waters, and may help transform one of the world’s poorest countries into a regional hydropower hub. By spurning an offer from Cairo for help financing the project, Addis Ababa has ensured it controls the construction of the Renaissance Dam on a Nile tributary. The electricity it will generate – enough to power a giant rich-world city like New York – can be exported across a power-hungry region. REUTERS/Tiksa Negeri/Files (ETHIOPIA – Tags: ENERGY ENVIRONMENT POLITICS BUSINESS CONSTRUCTION)