Environmental impact
PSE endeavours to reconcile the reliable and efficient operation of the power system with its development whilst respecting the natural environment.

Our every power project meets the legal requirements for the impact of extra-high voltage infrastructure on the environment.

Polish safety standards for electric and magnetic field impact for areas intended for housing and locations accessible to the public are among the most restrictive in the world.

PSE’s priorities concerning environmental protection

AEnvironmental aspects

GRI 103-2
For identified significant environmental aspects, our company has defined the internal rules of procedure and supervision, aimed to ensure compliance with all legal requirements and the best possible conservation of natural resources.
Electromagnetic field emissions
We pursue a number of activities which further the achievement of the following objectives:
  • meeting the permitted electromagnetic field levels in the environment outside the line right of way, as required by law,
  • selecting locations for new projects that make it possible to limit the construction of power facilities in residential development areas,
  • maintaining systems and equipment in good working order,
  • advanced technological solutions for equipment and systems.
Noise emissions
We perform tasks that contribute to meeting the permissible noise levels in the environment as required by law. This is achieved through measures relating to:
  • selecting network infrastructure locations that make it possible to limit the construction of power facilities in residential development areas,
  • quality control of the work performed,
  • maintaining systems and equipment in good working order.
Wprowadzenie ścieków do gruntu oraz wód
As a result of our activities, sanitary sewage is generated which is discharged into the combined sewer system, septic tanks or, after treatment in a biological sewage treatment plant, into the ground or into waters. There are biological sewage treatment plants on the sites of network facilities, using various treatment methods, including active sludge and sprinkling bed.
After treatment, the sewage meets the requirements of law and water management permits. Sewage treatment facilities are designed and built in accordance with the applicable standards, laws and regulations, and, in order to ensure correct operation, they undergo periodic maintenance and inspections. The quality of the sewage released into the environment is also subject to periodic control.
GRI 306-1
Total sewage volume* by treatment method and destination
Volume (m3)
2019** 2018**
Sewage treated in the company’s own biological sewage treatment plants Sewage discharged into surface waters, including lakes and rivers 399.00 886.00
Discharged into the ground 1,886.49 1,084.33
Carried off to municipal plants 25,991.20 31,109.35
Total sewage volume 28,267.69 33,079.68
* The indicator refers to sewage discharged from substation facilities and PSE headquarters and field locations. Not applicable to precipitation water.
** In 2018-2019, in the quantity of sewage carried off to municipal utilities included also liquid waste collected from septic tanks. Sewage parameters are monitored by the recipient.
We strive to minimise water consumption
We do not carry on any production activity and therefore water consumption at our headquarters and at the substations is small. Nevertheless, we monitor water consumption under the Environmental Management System. Water is supplied to substation facilities from our own deep wells and from municipal water mains.
Wells are a source of supply to our 13 extra-high voltage substations. At the substation facilities, water is used for personal purposes of the substation personnel and for firefighting purposes.
At the substations with transformer units equipped with fire extinguishing systems, a small quantity of reservoir water is consumed for sprinkler system tests which are performed once a year. The measurement of consumer water quantity is based on the main water meter readings.
At our headquarters in Konstancin-Jeziorna, we use our own water intake. We have two deep wells. Water supplied to PSE field units comes from municipal mains.
GRI 303-1
Water withdrawal by source
Quantity (m3)
2019 2018
Groundwater (own intakes) 14,744.45 17,368.65
Water supply from municipal mains or from other external sources 19,047.20 21,026.98
Total water volume withdrawn from the above sources 33,791.65 38,395.63
Source: Own compilation based on water meter readings at the sites with their own water intakes and on water supply invoices for the facilities using water mains.
Waste generation
For many years, we have performed selective collection of waste generated by the activities carried out at the site of grid assets and on the premises of PSE and its field locations. In order to standardise the rules of handing waste in our company, the “Instructions for waste management at PSE S.A.” have been prepared which apply both to waste generated by PSE and by third parties in the course of operation, maintenance, failure recovery, and new build and repair projects. One of the appendices to the Instructions is dedicated in whole to the rules of correct sorting of municipal waste generated by human living activities.
PSE’s office buildings and all electrical substations have been equipped with containers for selective collection of waste (including paper, plastics, glass, metals, spent life sources, batteries and contaminated absorbent). Most waste is collected at the place of generation. The rooms, areas and containers in which the different waste types are collected are duly marked.
Correct sorting of waste is also checked during inspections carried out on the sites of facilities. Presentation of the rules and obligations concerning waste sorting is one of the permanent training topics for the company’s newly hired employees.
Typical hazardous waste generated at our substations include e.g. spent mineral oils, batteries and absorbents. The greatest amount of waste is produced during work related to the implementation of upgrade investment projects, in particular the upgrading and construction of power facilities. The generators of waste are contractors responsible for the management of the waste. In the case of waste with a value the waste producer is PSE.
To ensure that contractors’ waste management activities comply with the applicable regulations, permanent supervision is maintained on the site of operating facilities and during the execution of investment projects.
GRI 306-2 *
Total weight of waste by type and disposal method** (in Mg)in Mg
2019 2018
Hazardous waste, including: 673,14 331,93
- stored on the premises 19.09 15.50
- handed over to authorised entities 654.05 316.43
Non-hazardous waste, including: 1,108.43 86.43
- stored on the premises 1.15 0.36
- handed over to authorised entities 1,107.28 86.07
* The indicator refers to substation facilities and PSE headquarters and field locations.
** No information is available to us on the further disposal of waste owing to a lack of specified handling procedures for waste taken over by their recipients – the waste disposal company. The data have been prepared on the basis of Waste Record Sheets.
Hazardous substance spill
We engage in activities aimed to:
  • curtail the risk of emergency situation through preventive measures and the correct maintenance of facilities,
  • maintain readiness to mitigate the environmental impact of failures caused by infrastructure owned by the company.
GRI 306-3
Total number and volume of significant spills*
Value in 2019 Number of spills Value in 2018 Number of spills
Number of spills and weight of oil-contaminated soil 19.7 Mg 3 99.20 Mg 3
SF gas spills 50.1 kg 44 69.25 kg 15
Coolant spills 142.68 kg 37 80.40 kg 10
* “Significant spill” – with reference to our activities, means a spill resulting in environmental pollution.
The volume of SF6 gas which was emitted into the environment in 2019 was 28 percent smaller than a year before. In the case of insulating oil spills, an 80 percent decrease in the mass of oil-contaminated earth was reported compared with 2018.
Devices containing a significant quantity of insulating oil – transformers – are equipped with appropriate protection features, i.e. oil trays, which are designed to contain an emergency oil discharge in the event of an uncontrolled spill. In 2019, no significant spill of insulating oil having a negative environmental impact was recorded.
GRI 306-3
Total number and volume of significant spills* in 2019
Network services field area Substation Number Calculation of SF6 emissions from electrical power equipment
Quantity (in kg) CO2 equivalent (in t)
Warsaw Mory ES 1 0.4 9.12
Ołtarzew ES 1 0.45 10.26
Piotrków ES 2 13.2 300.96
Total 4 14.05 320.34
Radom Abramowice ES 3 2.05 46.74
Chmielów ES 3 4.85 110.58
Kozienice ES 6 6.55 149.34
Krosno Iskrzynia ES 1 1 22.8
Radkowice ES 1 0.15 3.42
Total 14 14.6 332.88
Katowice Bujaków ES 1 0.55 12.54
Byczyna ES 3 4.65 106.02
Joachimów ES 1 1 22.8
Wielopole ES 9 9.65 220.02
Total 14 15.85 361.38
Bydgoszcz Grudziądz Węgrowo ES 1 0.5 11.4
Jasiniec ES 2 0.5 11.4
Olsztyn Mątki ES 2 0.85 19.38
Żydowo ES 3 0.5 11.4
Total 8 2.35 53.58
Poznań Krajnik SE 1 0.95 21.66
Mikulowa SE 1 0.7 15.96
Morzyczyn SE 1 1.1 25.08
Polkowice SE 1 0.5 11.4
Total 4 3.25 74.1
Total spills   44 50.1 1142.28
* “Significant spill” – with reference to our activities, means a spill resulting in environmental pollution.
Source: Own compilation based on the company’s internal records and environmental reports.
GRI 306-3 Number and volume of spills in 2019
Coolant spill Calculation of hydrofluorocarbons
Site locations Electrical substation Substance name Number Quantity (in kg) CO2 equivalent [t] GWP calculated in accordance with Regulation (EU) 517/2014
Warsaw Mory SE R410A 1 1.5 3.13 2088
Mościska ES R410A 1 1.5 3.13 2088
Narew ES R407C 2 2 3.55 1774
Stanisławów ES R407C 1 5 8.87 1774
Konstancin Jez. Headquarters R134a 1 23 32.89 1430
Total   6 33 51.57 -
Radom Chmielów ES R407C 1 1.5 2.66 1774
Kielce Piaski ES R410A 1 0.8 1.67 2088
Kozienice ES R410A 2 1.6 3.34 2088
Total   4 3.9 7.67 -
Katowice Byczyna ES R407C 2 14 24.84 1774
Byczyna ES R410A 1 1 2.09 2088
Klikowa ES R407C 1 8 14.19 1774
Lubocza ES R410A 3 11.85 24.74 2088
Łośnice ES R407C 1 5 8.87 1774
Siersza ES R410A 1 4.3 8.89 2088
Skawina ES R410A 5 4.9 10.23 2088
Wanda ES R407C 1 2 3.54 1774
Katowice Office R407C 2 2.9 5.15 1774
Katowice Office R410A 1 4.3 8.98 2088
Total   18 58.25 111.61 -
Bydgoszcz Bydgoszcz Office R 410 A 1 12.8 26.73 2088
Total   1 12.8 26.73 -
Poznań Cieplice ES R410A 1 5.3 11.07 2088
Pasikurowice ES R410A 2 5.8 12.11 2088
Piła Krzewina ES R410A 2 4.13 8.62 2088
Poznań Office R422D 2 18 49.12 2729
Poznań Office R407C 1 1.5 2.66 1774
Total   8 34.73 83.58 -
Total     37 142.68 281.16 -
GRI 306-3 Number of insulating oil spills and weight of oil-contaminated soil in 2019
Location and type of significant spills  
Number of events Quantity of replaced earth
1 Siersza ES – AT1 failure 1 1.5
2 Żarnowiec ES – instrument transformer failure 1 4.2
3 Żarnowiec ES – AT2 failure 1 14
Total 3 19.7
Readiness and responding in environmental emergency situations (e.g. hydrocarbon spillage)
Equipment operated at PSE’s substation sites contain substances which may cause contamination when released into the environment. Such substances include mainly:
  • insulating oil (transformers, oil circuit breakers, instrument transformers, shunt reactors, circuit breakers, capacitors),
  • diesel oil (power generating sets),
  • acids (battery electrolytes).
Due to the risk of equipment failure and related risk of spill of the above-mentioned substances, we endeavour to reduce their negative environmental impact as much as possible.

For this purpose, we have developed two documents:
  • “Operational instructions for handling failures at an electrical substation of PSE S.A. posing the risk of environmental pollution with insulation oil”.
  • “Operational instructions for handling hazardous substance spillage” (which also applies to PSE field locations). Moreover, each facility is equipped with the so-called environmental first aid kits – portable sets of absorbents for the collection of small spills to prevent spillage from spreading.