Accounting policies

Alliander N.V. is a public limited liability company, with registered offices in Arnhem (Utrechtseweg 68, 6812 AH Arnhem) in the Netherlands.

The 2025 financial statements were signed by the members of the Management Board and the members of the Supervisory Board on 6 March 2026. The Supervisory Board will submit the financial statements for adoption by the General Meeting of Shareholders on 15 April 2026. The accounting policies are based on the assumption of a going concern.

The Alliander group

Alliander N.V. is a public limited liability company, with registered offices in Arnhem, the Netherlands. The principal activities of Alliander and its wholly-owned subsidiaries (also referred to here as ‘Alliander’, ‘the Alliander group’, ‘the group’ or similar expressions) are the operation of electricity and gas networks covering roughly one-third of the Netherlands, and the provision of related services.

The subsidiary Liander owns and manages the regional gas and electricity networks in the provinces of Gelderland, Friesland, Noord-Holland and parts of Zuid-Holland, Flevoland and Noordoostpolder. The Dutch Energy Act entered into force on 1 January 2026, superseding the Electricity Act 1998 and the Gas Act. Under the Energy Act, the construction, management and maintenance of the electricity and gas networks and the transmission of electricity are the exclusive responsibility of the network operator. Qirion provides services relating to the construction and maintenance of complex energy infrastructures. Alliander AG performs network management activities. Alliander Telecom N.V., TReNT B.V., TReNT Infra B.V. and the joint operation Utility Connect B.V. perform data communications activities, both for the group and for third parties. Firan creates local energy solutions and Alliander also works with other subsidiaries, like ENTRNCE, to initiate and facilitate developments and activities aimed at creating a sustainable energy supply for the Netherlands.

Non-controlling interests

There are third-party non-controlling interests in Alliander’s activities. As at year-end 2025, this concerned a 5% interest on the part of the Municipality of Nijmegen in Indigo B.V., a 5% interest on the part of the Municipality of Hengelo in Warmtenetwerk Hengelo B.V., a 5% interest on the part of the Municipality of Didam in Warmtenetwerk Didam B.V. and a 25% interest in Warmte-Infrastructuur Limburg Geothermie B.V., all of which are subsidiaries of Firan. See note 12.