Also known by the acronym ENA, the Natural Inflow Energy is the energy obtained when the natural flow of a tributary (a water line that ends in a main river) is harnessed at the plants located downstream, from an observation point.
In times of water crisis, such as the one observed in southeastern Brazil since 2014, the utilization of this energy has significantly decreased. The year 2014, for example, recorded a final ENA balance with only 68% of everything that was captured the previous year, 2013.
This decline is directly related to the lack of rainfall in the region and is expected to continue in 2015. In the month of July, for example, the acquisition of natural inflow energies had new values incorporated to meet demand, as these values are adjusted according to natural flows and changes in hydroelectric configurations.
