Context of non-financial reporting

The Board of Directors of Swissgrid Ltd approved the integrated Annual and Sustainability Report on 16 April 2026 for publication on 20 April 2026 and approved it for submission to the General Assembly on 20 May 2026. The integrated Annual Report is published electronically on the Swissgrid website (https://www.swissgrid.ch/en/home/newsroom/publications.html).

Integrated non-financial reporting takes place once a year. This report refers to the situation as at 31 December 2025 and covers the business activities of Swissgrid Ltd. The activities of Pronovo AG were excluded from the financial and non-financial consolidation in accordance with Art. 64 Para. 5 of the Energy Act.

Swissgrid’s non-financial reporting was prepared in accordance with the obligations set out in Article 964 of the Swiss Code of Obligations (CO). Consequently, this report provides an account of the sustainability issues in accordance with Article 964b of the Swiss Code of Obligations (environmental matters, including climate issues, social issues, employee-related issues, respect for human rights and combating corruption).

The Sustainability Report is structured according to the material topics identified in Swissgrid’s double materiality analysis. This is based on the general requirements of the European Sustainability Reporting Standard (ESRS 1) and takes into account the impact-related, financial and operational materiality of relevant sustainability topics. To ensure transparent reporting, Swissgrid reports in accordance with the standards of the Global Reporting Initiative (GRI), the Ordinance on Climate Disclosures and the Ordinance on Due Diligence and Transparency in relation to Minerals and Metals from Conflict-Affected Areas and Child Labour (DDTrO). Swissgrid does not import or process any conflict minerals or metals as defined in the law and the ordinance and is therefore exempt from the reporting obligations regarding minerals and metals. Reporting on the exercise of due diligence with regard to child labour is integrated into the «Sustainable supply chain» section.

To improve data quality, Swissgrid enhanced its data collection methods for selected key figures in the 2025 financial year. To ensure comparability, the prior-year figures presented in the report have been retrospectively adjusted where material. The material changes (i.e. with an impact of +/– 5%) are explained in the relevant sections of the Sustainability Report. The most important retrospective adjustments are due to new emission factors published by the Federal Office for the Environment (FOEN) and the Association of Swiss Electricity Companies (VSE), which have a significant impact on the extent of the greenhouse gas emissions reported across all three scopes. In addition, Swissgrid has selectively adapted the methodology for measuring Scope 3 greenhouse gas emissions in order to improve the accuracy and comparability of the reported data.

Swissgrid tasked PricewaterhouseCoopers with conducting a limited assurance audit of selected key figures in accordance with the «Independent Auditor’s Report» in the Notes to ensure the reliability of the material key figures on greenhouse gas emissions, consumption of electricity, occupational safety, employees and diversity. The externally audited key figures are labelled accordingly in the report () and relate to the 2025 financial year.

Contact

Swissgrid Ltd
Bleichemattstrasse 31
P.O. Box
5001 Aarau
Switzerland
Telephone: +41 58 580 21 11
E-mail: info@swissgrid.ch