Specialist power and water consulting firm Entura has identified opportunities for the South African city of Durban to increase its use of renewable energy, while at the same time driving down water infrastructure operating costs. Entura received a grant from the Renewable Energy and Energy Efficiency Partnership (REEEP), an international non-profit organisation, to identify opportunities to install mini-hydro (100kW to 1MW) on existing water supply infrastructure. The opportunities identified would enable generation of energy from renewable sources without the need for large and costly new infrastructure.