The report was subjected to the internal and external assurance process. Reliability of the report, its content and compliance with guidelines was examined by the PSE CG Sustainable Development Team. External assurance was carried out by an independent unit whose choice was approved by the Management Board.

Bureau Veritas Polska Sp. z o.o. (Bureau Veritas) has been engaged by Polskie Sieci Elektroenergetyczne S.A. (PSE) to provide limited assurance of information and data prepared in accordance with GRI Sustainability Reporting Standards (GRI Standards), Core option, included in its “PSE Impact Report 2018” (the Report). This Assurance Statement applies to the related data and information included within the scope of work described below.

The scope of our work was limited to assurance of information included in the Report for the period 1 January 2018 to 31 December 2018 over Universal Standards and Topic-specific Standards which are the GRI Sustainability Reporting Standards, Core option (Selected Information).

Excluded from the scope of our work is any assurance of other information included in the Report.

The Selected Information needs to be read and understood together with the GRI Sustainability Reporting Standards 2016 as set out at https://www.globalreporting.org

Excluded from the scope of our work is any verification of information relating to:

• Activities outside the defined verification period;
• Positional statements (expressions of opinion, belief, aim or future intention by PSE and statements of future commitment)
• Information included in the section “Our contribution to the employment and economic development of Poland”.

This limited assurance engagement relies on a risk based selected sample of sustainability data and the associated limitations that this entails. The reliability of the reported data is dependent on the accuracy of metering and other production measurement arrangements employed at site level, not addressed as part of this assurance. This independent statement should not be relied upon to detect all errors, omissions or misstatements that may exist.

This preparation and presentation of the Selected Information in the Report are the sole responsibility of the management of PSE.

Bureau Veritas was not involved in the drafting of the Report or the Reporting Criteria. Our responsibilities were to:

• obtain limited assurance about whether the Selected Information has been prepared in accordance with the Reporting Criteria;
• form an independent conclusion based on the assurance procedures performed and evidence obtained; and
• report our conclusions to the Directors of PSE.

We performed our work in accordance with International Standard on Assurance Engagements (ISAE) 3000 Revised, Assurance Engagements Other than Audits or Reviews of Historical Financial Information (effective for assurance reports dated on or after December 15, 2015), issued by the International Auditing and Assurance Standards Board.

As part of our independent verification, our work included:

1. Assessing the appropriateness of the Reporting Criteria for the Selected Information;
2. Conducting interviews with relevant personnel of PSE;
3. Reviewing the data collection and consolidation processes used to compile Selected Information, including assessing assumptions made, and the data scope and reporting boundaries;
4. Reviewing documentary evidence provided by PSE;
5. Agreeing a selection of the Selected Information to the corresponding source documentation;
6. Reviewing PSE’s systems for quantitative data aggregation and analysis;
7. Assessing the disclosure and presentation of the Selected Information to ensure consistency with assured information.

On the basis of our methodology and the activities described above:

• Nothing has come to our attention to indicate that the Selected Information is not fairly stated in all material respects.

Based on our work, it is our opinion that “PSE Impact Report 2018” has been prepared in accordance with standards for sustainability reporting the GRI Standards, Core option.

Bureau Veritas is an independent professional services company that specialises in quality, environmental, health, safety and social accountability with over 190 years history. Its assurance team has extensive experience in conducting verification over environmental, social, ethical and health and safety information, systems and processes.

Bureau Veritas operates a certified¹ Quality Management System which complies with the requirements of ISO 9001:2008, and accordingly maintains a comprehensive system of quality control including documented policies and procedures regarding compliance with ethical requirements, professional standards and applicable legal and regulatory requirements.

Bureau Veritas has implemented and applies a Code of Ethics, which meets the requirements of the International Federation of Inspections Agencies (IFIA)², across the business to ensure that its employees maintain integrity, objectivity, professional competence and due care, confidentiality, professional behaviour and high ethical standards in their day-to-day business activities.

BUREAU VERITAS POLSKA Sp. z o.o.
Warsaw, January 2020

BUREAU VERITAS Polska Sp. z o. o. (Bureau Veritas) has been engaged by Polskie Sieci Elektroenergetyczne S.A. (PSE) to conduct an independent verification at a limited assurance level of the greenhouse gas (GHG) emissions reported by PSE for the reported period of 1st January 2017 to 31st December 2018. This Verification Statement applies to the related information included within the scope of work described below.

The determination of the GHG emissions is the sole responsibility of PSE. Our sole responsibility was to provide independent verification on the accuracy of the GHG emissions reported, and on the underlying systems and processes used to collect, analyze and review the information.

PSE S.A. with headquarter in Konstancin - Jeziorna and units in Bydgoszcz, Katowice, Poznań, Radom with transmission infrastructure.

Data and information supporting the Scope 1, 2 and 3 GHG emissions assertion were historical in nature.

Based on the results of our verification process, Bureau Veritas found no evidence that the GHG emissions shown above:

• is not materially correct;
• is not a fair representation of the GHG emissions data and information; and
• is not prepared in accordance with the WRI/WBCSD GHG Protocol Corporate Accounting and Reporting Standard.

It is our opinion that PSE has established appropriate systems for the collection, aggregation and analysis of quantitative data for determination of GHG emissions for the stated period and boundaries.

Bureau Veritas is an independent professional services company that specialises in quality, environmental, health, safety and social accountability with over 190 years history.

No member of the verification team has a business relationship with PSE, its Directors or Managers beyond that required of this assignment. We conducted this verification independently and to our knowledge there has been no conflict of interest.

Bureau Veritas operates a certified Quality Management System which complies with the requirements of ISO 9001:2015 and accordingly maintains a comprehensive system of quality control including documented policies and procedures regarding compliance with ethical requirements, professional standards and applicable legal and regulatory requirements.

Bureau Veritas has implemented and applies a Code of Ethics, which meets the requirements of the International Federation of Inspections Agencies (IFIA), across the business to ensure that its employees maintain integrity, objectivity, professional competence and due care, confidentiality, professional behaviour and high ethical standards in their day-to-day business activities.

BUREAU VERITAS POLSKA Sp. z o. o.
Warsaw, December 2019