The main environmental impacts resulting from the combustion of fossil fuels in thermoelectric power plants consists of atmospheric emissions. EDP has been investing in monitoring and minimizing such impacts, in particular through desulphuration and denitrification processes in coal thermoelectric plants.
Gaseous effluents produced by EDP facilities are controlled by permanently monitoring and regularly measuring minority pollutants such as heavy metals and volatile organic compounds.
Currently, the coal thermoelectric plants within theIberian Peninsula have SO2 and NOx emission reduction systems.
EDP’s thermoelectric plants have wastewater treatment facilities in order to ensure the quality of the water that is released into the water environment.
The EDP Group regularly monitors the quality of effluents, under the provisions set out in the respective environmental permits and current legislation.
In the case of Soto Ribera effluents are discharged into the Nalón river, which has been declared a Community Interest Site. Its effluents are subject to temperature conditions and physical-chemical parameters which ensure that the receiving medium is not affected.
The thermal impact of cooling water from EDP’s thermoelectric plants is periodically monitored according to the specific features of each plant and their respective environmental permits. Aerial thermography and other measurements allow us to verify our compliance with established temperature limits.
Check detailed information on the quality of treated and rejected effluents on EDP thermoelectric plants:
EDP operates a waste management system that continuously strives to recover waste and reduce its production at the source.
The waste generated by EDP’s activities is collected and stored separately. It is then sent to licensed waste management operators, who carry out waste recovery processes as the preferred final disposal method.
The European Parliament and Council Directive no. 2008/98/EC introduced several changes in waste management operations, with a special focus on the definition of byproduct and the conditions underlying this classification.
In the context of the EDP Group’s energy production activities, in Portugal, fly ashes, slag and gypsum obeying to specified requests are recognized by the responsible authority as byproduct. Therefore, under the regulations in force since 2011, EDP reports waste and byproducts separately.
In Brazil, although the by-product status is not applicable, theses waste materials are recovered. In 2018, the fly ash and slag has a recovery rate of 85% and 83%, respectively.
Under the Basel Convention, EDP restricts transboundary movements of its waste. Exportation is limited to PCB waste or accidental occurrences in which the country where such waste is produced does not have the technical capacity/facilities for its removal.
According to the law, all equipment contaminated with PCB concentrations below 500 ppm must be kept until the end of its life cycle; EDP, however, is anticipating their disposal by prioritizing this kind of equipment under the company’s replacement plans.
EDP conducts noise measurements in order to verify compliance with current legislation.
Within the framework of Distribution activities, there has been an increasing attention to soundscape assessment and quality control measures, since facilities are often located in close proximity to residential areas.
EDP has been implementing sound insulation measures in the construction of new infrastructure.
In addition to strict compliance with applicable laws and regulations, EDP systematically tracks the evolution of domestic and international scientific studies and adopts the recommendations of global benchmark organizations, in particular the World Health Organization (WHO).