This Call for competition contains information about TenneT TSO B.V.'s, hereinafter referred to as  "TenneT", current European restricted tender procedure. More information about TenneT can be found on: www.tennet.eu. TenneT is a leading European transmission system operator. TenneT designs, builds, maintains and operates the high-voltage electricity grid in the Netherlands. In doing so, TenneT plays a central role in ensuring security of supply, facilitating the energy transition and enabling the integration of renewable energy sources into the electricity system. This tender relates to TenneT’s ambition to further digitalize and improve the monitoring of its overhead line infrastructure. The envisaged solution is intended to support TenneT in carrying out overhead line inspections and related analyses in a more data-driven, efficient and scalable manner.