AA1000 - International standard of corporate social responsibility, which incorporates social and ethical issues in strategic governance of the organization and its activities.


BAT - Best Available Techniques – a document drawing conclusions on best available techniques for the installations concerned and indicating the emission levels associated with the best available techniques.

Blockchain - A decentralized platform with a dispersed network infrastructure used to account for transactions, payments or accounting entries. Advantages of this technology include, among others, safety, which is ensured by the application of cryptographic algorithms, resilience to failures and transparency of transactions, while maintaining anonymity of users. The list of possible applications includes, among others, cryptocurrencies, the Internet of Things, exchange transactions without intermediaries and institutions, land and mortgage registers without notaries and mortgage courts, electricity trading between prosumers and buyers without intermediaries, accounting ledgers.


Capacity auction - A mechanism introduced by the Capacity Market Act of 8 December 2017 (Journal of Laws 2020, Item 247). In capacity auctions, electricity producers offer the operator a capacity obligation for the duration of a delivery period, which means that they undertake to maintain readiness in the delivery period to deliver the specified electric power output to the system and to deliver the specified electric power output to the system in emergency periods.

CO - Carbon monoxide.

CO2 - Carbon dioxide.

Cogeneration - A technological process of simultaneous generation of electricity and usable thermal energy in a CHP plant.

Compliance - Assurance of compliance of the organization’s activities with the applicable law and internal regulations.

CSR - Corporate Social Responsibility. Responsibility of an organization for the impact exerted by its decisions and actions on society and the environment; it is ensured by transparent and ethical conduct, which:

  • contributes to sustainable development, including wellbeing and health of the society,
  • takes stakeholder expectations into account,
  • complies with the applicable law and consistent with international standards of conduct,
  • is integrated with the organization’s activities and is practiced in its relations.


Employee Council - Employee representation body established by the Act of 7 April 2006 on Informing Employees and Consultations with Them (Journal of Laws 2006 No. 79 Item 550). Employee Council should be established in employers who conduct business activity and have at least 50 employees. This obligation does not apply among others to employers subject to the provisions of the Act who had signed, by 24 May 2006, an agreement with employee representatives ensuring the degree of information and consultation at least equal to the conditions required by the act.

Employer branding - Activities undertaken by a company to build its image as an attractive employer.

Energy law - Act of 10 April 1997 – Energy Law (Journal of Laws 2020 Item 883).


FDIR - Faul Detection, Isolation, Restoration, a system enabling automatic detection of faults, isolation of the damage site and restoration of power supply.

FGD - Flue gas desulfurization and heavy metal reduction installation.


GPZ - Main Supply Point.

GRI - the Global Reporting Initiative guidelines, international standard for sustainable development reporting.

GWh - Gigawatt hour.


HCl - Hydrogen chloride.

HF - Hydrogen fluoride.

HR - Human resources.


IED - Directive 2010/75/EU of the European Parliament and of the Council of 24 November 2010 concerning industrial emissions. It tightens the standards for emissions of sulfur dioxide, nitrogen oxides and dust from combustion plants.

Internal Collective Bargaining Agreement - An agreement between an employer and the company trade union organization defining the mutual rights and obligations of the parties to the employment relationship, including in particular the terms of work conditions and wages.

Internet of Things - A concept according to which various items, such as household appliances, lighting and heating products, may directly or indirectly collect, process or exchange data via a power installation or a computer network. The purpose of this concept is to create smart cities, transport, products, buildings, power supply systems, health systems or daily life systems.

IT - Information technology. Computer hardware and software as well as tools and other techniques related to the collection, processing, transmission, storage, protection and presentation of information.


LV - Low voltage grid supplying individual users with 50 Hz alternating current at 230 V phase voltage.


Mg - Megagram, or a ton.

Mobbing - Bullying, persistent harassment and intimidation, psychological violence against a subordinate or co-worker in the workplace.

MV - Medium voltage grid, in which the phase-to-phase voltage ranges from 1 kV to 60 kV.

MWe - Megawatt of electrical power.

MWh - Megawatthour (1 GWh = 1,000 MWh).

MWt - Megawatt of thermal power.


National Power System - A collection of devices used to generate, transmit, distribute, store and use electricity, connected together in a functional system supporting continuous and uninterrupted supply of electricity in Poland.

Nm3 - Normalized cubic meter of gas, i.e. the number of cubic meters that the gas would occupy in normal conditions.

NOx - Nitrogen oxides.


OSH - Occupational health and safety.


RES - Renewable Energy Sources.


SAIDI - System Average Interruption Duration Index - indicator of the average system duration of a long and very long break in the supply of electricity (expressed in minutes per Customer).

SAIFI - System Average Interruption Frequency Index – indicator of the average system frequency of long interruptions in energy supply (expressed in the number of breaks per Customer).

Scope 1 - Direct CO2 emissions resulting from fuel combustion in stationary or mobile sources owned by an organization or under its control, emissions resulting from manufacturing or processing or fugitive emissions of coolants.

Scope 2 - Electricity indirect CO2 emissions resulting from the generation of consumed electricity, heat, processing steam and cooling, purchased or supplied from outside.

Scope 3 - Other indirect CO2 emissions created in the company’s entire value chain, e.g. in the production of raw materials, semi-finished products, management of waste, transportation of raw materials and products, business trips of Employees or the use of products by final users.

Selective catalytic reduction (SCR) - An installation for catalytic denitrification of exhaust gases. It operates based on the principle of reduction of nitrogen oxides to atmospheric nitrogen on the surface of a catalyst, using substances containing ammonia.

Smart Grid - Smart electrical grids, which feature communication between all the participants on the energy market, in order to supply energy services at lower costs, enhance efficiency and integrate dispersed energy sources, including renewable energy sources.

SO2 - Sulfur dioxide.

SOx - Sulfur oxide.

Social labor inspection - Social service provided by Employees to ensure that the company ensures safe and healthy working conditions and to protect employee rights specified in labor law. Social labor inspectors cooperate with the National Labor Inspectorate and other authorities overseeing and inspecting working conditions. The principal scope of their activity is defined in the Social Labor Inspection Act of 24 June 1983 (Journal of Laws 2015, Item 567).

Stakeholder - A person or group of persons interested in decisions or activities of an organization. A stakeholder is anyone who influences an organization and anyone influenced by it.

Supply chain - A sequence of actions or parties supplying products or services to an organization.

Sustainable development - Development that meets the needs of the present without compromising the ability of future generations to meet their own needs and considers the expectations of the surrounding communities and societal, environmental and economic challenges. It enables permanent increase of the value of an organization and rational management of resources.


TWh - Terawatt hour.

Wastewater hydrocyclones - Devices serving the purpose of reducing the volume of suspended gypsum particles reaching the FGD wastewater treatment plant and therefore reducing the volume of sediment/sludge discharged from the treatment plant.

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