West African gold mine Iamgold Essakane has signed a 15-year power purchase agreement to with renewable energy providers in a move that will cut its diesel use and lower its carbon footprint. EREN Renewable Energy and its partner African Energy Management Platform (AEMP) on Monday announced that a 15 MWp, $20-million-plus solar project would be built at the mine, which is located off-grid, 330 km from Ouagadougou in Burkina Faso.