environmental dimension
Monitor and minimize

Atmospheric emissions

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:

Environment
Wastewater 2018

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Wastewater 2017

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Wastewater 2016

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Wastewater 2015

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Wastewater 2014

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Wastewater 2013

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Wastewater 2012

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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.

Waste
Unit
2018
2017
2016
2015
Total Waste
t
349,329
666,771
477,373
642,362
WasteGypsum
Unitt
20186,896
20174,75
20166,721
201564,447
WasteFly ash
Unitt
2018240,771
2017368,019
2016282,771
2015416,101
WasteSlag
Unitt
201849,381
201764,829
2016121,538
2015123,947
WasteHazardous
Unitt
20185,409
20176,24
20166,443
20157,089
WasteOther
Unitt
201846,872
2017222,932
201659,899
201530,778
Recovered Waste
t
272,964
304,231
288,898
295,017
WasteGypsum
Unitt
20184,247
20173,114
20164,321
201541,506
WasteFly ash
Unitt
2018206,728
2017210,664
2016142,309
2015180,364
WasteSlag
Unitt
201841,079
201747,296
2016112,832
201551,667
WasteHazardous
Unitt
20183,385
20173,852
20162,689
20153,262
WasteOther
Unitt
201817,525
201739,304
201626,746
201518,218
Non-recovered Waste
t
76,365
362,54
188,475
347,345
WasteGypsum
Unitt
20182,649
20171,637
20162,4
201522,94
WasteFly ash
Unitt
201834,043
2017157,354
2016140,462
2015235,737
WasteSlag
Unitt
20188,301
201717,534
20168,706
201572,28
WasteHazardous
Unitt
20182,024
20172,388
20163,754
20153,827
WasteOther
Unitt
201829,347
2017183,628
201633,153
201512,56
Exported waste PCB
Unit
2018
2017
2016
2015
Exported waste PCB
Portugal
Unit
t
2018
2
2017
7
2016
-
2015
58
Exported waste PCB
Spain
Unit
t
2018
16
2017
29
2016
86
2015
55
Exported waste PCB
Brazil
Unit
t
2018
-
2017
-
2016
-
2015
-
Exported waste PCB
North America
Unit
t
2018
-
2017
-
2016
-
2015
-
Exported waste PCB
Rest of Europe
Unit
t
2018
-
2017
-
2016
-
2015
-
 

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).

Publication
Electric and magnetic fields

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