9Materials and third-party services

Materials and third party services contain expenses for maintaining and operating technical assets, external services for operational processes and the performance of services by third parties.

On behalf of Terna, connection systems are being produced for the photovoltaic systems of subsidiary Resol Ghislarengo S.r.l.; on completion these systems are transferred to Terna S.p.A. at the manufacturing costs incurred. In the 2025 financial year, costs of materials of CHF 6,031 thousand were incurred in this connection (previous year CHF 10,809). The expenses are allocated to the Market Italy segment and were recognised in the same amount in changes in inventory of sales orders (see Note 3).