In the production process we use mainly hard coal, gas, biomass and heating oils. The basic fuel we use is hard coal, which is supplied in significant quantities by LW Bogdanka. Biomass in the form of forest chips, energy willow chips and sunflower hull pellets is used primarily at the Białystok Combined Heat and Power Plant and at the ‘green unit’ of the Połaniec Power Plant. Production of electricity and heat obtained from gas takes place in Przedsiębiorstwo Energetyki Cieplnej Oborniki and Miejska Energetyka Cieplna Piła.

Main raw materials used by the Generation Segment in 2017:

Rodzaj surowca	Ilość
Hard coal [thousand tons]	9823.9
Biomass [thousand tonnes]	1676.3
Gas [in thousands m3]	16840.9
Heavy fuel oil [thousand tonnes]	13.8
Light heating oil [thousand tonnes]	6.1
Limestone meal [thousand tonnes]	179.7
Ammonia water [thousand tonnes]	10.1
Calcinated magnesite [thousand tonnes]	0.02
Stone salt [thousand tonnes]	0.0028

Total water withdrawal in Enea Group companies in 2017 [m₃]²¹

Nazwa spółki	2017	źródła
Enea SA	12747.70	water supply system: 7962.70 other source: 4785.00
Enea Centrum sp. z o.o.	1759.20	water supply system: 1759.20
Enea Wytwarzanie sp. z o.o.	1663050763.00	groundwater intake: 798662.00 water from drainage: 5612230.00 surface water22 : 1656582146.00 water supply system intake: 50817.00
Przedsiębiorstwo Energetyki Cieplnej sp. z o.o. w Obornikach	1716.00	water supply system: 1716.00
Enea Ciepło Serwis sp. z o.o.23	n/a	n/a
Enea Ciepło sp. z o.o.	16347.00	water from deep wells: 13593 water supply system: 5463
Miejska Energetyka Cieplna Piła sp. z o.o.	6781.00	water supply system: 6781.00
Enea Operator sp. z o.o.	57237.60	water supply system: 56412.60 water from deep wells: 825.00
Enea Oświetlenie sp. z o.o.	796.70	water supply system: 796.70
Enea Elektrownia Połaniec SA	1289784219.00	surface water: 1289717042.00 water from deep wells: 67177.00
Enea Bioenergia sp. z o.o.24	120.96	water supply system: 120.96
Enea Pomiary sp. z o.o.	847.25	water supply system: 847.25
Enea Serwis sp. z o.o.	3178.00	water supply system: 3178.00
Enea Logistyka sp. z o.o.	1280.00	water supply system: 1280.00
Enea Trading sp. z o.o.	34.55	water supply system: 34.55

²¹⁾ For some companies, the value of waste does not include administrative properties, which are settled on a flat-rate basis in rent for all utilities.

²²⁾ Water taken from the Vistula river – taken back for cooling and without return for technological purposes.

²³⁾ Water consumed by Enea Ciepło Serwis is recorded in Enea Ciepło Company’s consumption. Enea Ciepło The service does not keep any records, because the fee for water is included in the lump sum for renting rooms.

²⁴⁾ The amount of water used applies only to hygiene and sanitary rooms and offices. The water consumption of the equipment and installations entrusted to operate and the water consumption in the adjacent rooms (control rooms, bathrooms, etc.) are recorded by Enea Połaniec S.A. as their owner.

What have we done to reduce water consumption in 2017?

• The new Kozienice Power Plant unit uses a closed cooling water circuit and its reuse. This results in high savings in water energy production processes.
• At the Białystok Cogeneration Power Plant, we have reduced water intake from deep wells and reduced the amount of process wastewater resulting mainly from modernisation works.
• We have modernised part of the heating network in the Generation Segment.
• We take care of the tightness of water systems and heating networks, as well as the high efficiency of installation equipment, and subject it to regular inspections. This allows for quick diagnosis and intervention in the event of malfunctions or other problems.

Waste by waste type [Mg] in 2017²⁵

Name of company	Waste type	2017 [Mg]
Enea SA	Hazardous waste Non-hazardous waste	0.00 1 4065
Enea Centrum sp. z o.o.	Hazardous waste Non-hazardous waste	0.00 32.5
Enea Wytwarzanie sp. z o.o.	Hazardous waste Non-hazardous waste	83.70 529502.00
Przedsiębiorstwo Energetyki Cieplnej sp. z o.o. w Obornikach.	Hazardous waste Non-hazardous waste	0.01 1430.16
PEnea Ciepło Serwis sp. z o.o.	Hazardous waste Non-hazardous waste	n/a 7.80
Enea Ciepło sp. z o.o.	Hazardous waste Non-hazardous waste	16.61 1900.94
Miejska Energetyka Cieplna Piła sp. z o.o.	Hazardous waste Non-hazardous waste	9.50 4576.20
Enea Operator sp. z o.o.	Hazardous waste Non-hazardous waste	517.09 4785.384
Enea Oświetlenie sp. z o.o.	Hazardous waste Non-hazardous waste	4.54 97.07
Enea Elektrownia Połaniec SA	Hazardous waste Non-hazardous waste	1.46 949890.97
Enea Bioenergia sp. z o.o.	Hazardous waste Non-hazardous waste	0.00 117.355
Enea Pomiary sp. z o.o.	Hazardous waste Non-hazardous waste	0.08 0.56
Enea Serwis sp. z o.o.	Hazardous waste Non-hazardous waste	127.11 368.82
Enea Logistyka sp. z o.o.26	Hazardous waste Non-hazardous waste	4.84 12.70
Enea Trading sp. z o.o.	Hazardous waste Non-hazardous waste	0.00 0.00

²⁵⁾ For some companies, the value of waste does not include administrative properties, which are settled on a flat-rate basis in rent for all utilities.

²⁶⁾ The amounts of waste include waste collected by Enea Logistyka sp. z o.o. from other entities of the Enea Group and waste electrical and electronic equipment collected under the provisions of the Waste Electrical and Electronic Equipment Act. They do not include municipal waste. Hazardous waste is sent for recycling by ElektroEko Organisacja Odzysku Sprzętu Elektrycznego i Elektronicznego SA, whereas non-hazardous waste is recovered.

Main regulations implemented by the companies concerning waste management

• Principles of waste management in Enea Wytwarzanie – location: Świerże Górne
• Waste Management Manual at the Białystok Combined Heat and Power Generating Plant
• Waste management manual in Enea Wytwarzanie – RES segment no. ZA-71-2015-3
• Procedure PŚ-4.4-02 Waste management for Enea Ciepło
• Waste management in Enea Oświetlenie
• Waste management programme at the Połaniec Power Plant