About TenneT
Company Overview
TenneT Holding B.V., a state-supported structure owned by the Dutch government
HeadquartersArnhem, Netherlands
Founded1998
SizeApproximately 9,700 employees worldwide, with an increase of 1,350 employees in 2024, and an IFRS revenue of EUR 9,999 million in 2024 (source: energeia.nl, storyblok.com)
What They Do
TenneT is the electricity transmission system operator for the Netherlands and large parts of Germany, responsible for designing, building, maintaining, and operating high-voltage grids without generating electricity itself (source: tennet.eu). As one of the largest European grid operators, the company focuses on both onshore and offshore transmission infrastructure, including interconnectors linking the Dutch, German, and neighboring electricity markets (source: gevernova.com). TenneT manages over 25,000 kilometers of high-voltage networks and facilitates reliable power supply and cross-border energy flows through 17 interconnectors (source: tennet.eu). The company primarily serves electricity systems such as producers, offshore wind developers, industrial users, and grid operators, distinguishing itself through large-scale investments in complex onshore and offshore networks, including 2 GW of offshore grid connections in the North Sea (source: gevernova.com).
Projects & Experience
TenneT has an impressive track record in expanding the electricity grid in Germany and the Netherlands. In 2024, the company invested EUR 10.6 billion in onshore and offshore projects, a 38% increase compared to 2023 (source: energeia.nl). Key milestones included the start of cable production for the 2 GW offshore projects BalWin4 and LanWin1, progress on the German onshore projects SuedLink and SuedOstLink, and the commissioning of Wahle-Mecklar, Germany’s longest AC project (source: wab.net). In the Netherlands, projects such as Southwest 380 kV, IJmuiden Ver Alpha and Beta, and Hollandse Kust West were further developed (source: wab.net). Additionally, in June 2024, a third 2 GW HVDC offshore transmission contract was awarded for Nederwiek 2, with planned delivery in 2031, as part of a framework for IJmuiden Ver Beta, IJmuiden Ver Gamma, and Nederwiek 2 (source: gevernova.com). Investment plans for the next decade include around 700 major infrastructure projects, including new 380 kV “power highways,” 140 upgraded substations, and nearly 21 GW of offshore wind networks (source: tennet.eu).
Recent Developments
Over the past two years, TenneT’s focus has been on financing, offshore grid expansion, and long-term partnerships. The Dutch government provided two shareholder loans totaling EUR 44 billion to support investments through 2026 (source: energeia.nl). In March 2025, the annual report highlighted the combination of high revenue, investment levels, and significant project progress on land and at sea (source: wab.net). In April 2024, Dutch grid operators published final investment plans for the coming decade, with TenneT expecting to execute about 700 major infrastructure projects (source: tennet.eu). Furthermore, TenneT announced long-term partnerships for grid expansion, including a framework agreement for 110 and 150 kV GIS installations and a first time-based contract with GIGA Storage, indicating a growing focus on innovative procurement models and system integration (source: tennet.eu).
Careers at TenneT
TenneT recruits professionals in various roles such as engineering, asset management, grid services, offshore, planning and permitting, and office administration (source: karriere.tennet.eu). The organization has offices in Bayreuth, Lehrte, Hannover, Bremen, Ingolstadt, and Oldenburg, offering both hybrid and on-site work options (source: karriere.tennet.eu). With approximately 5,000 employees and 89 nationalities across its two main locations, TenneT is characterized as an international technical organization with cross-border activities (source: karriere.tennet.eu). The company culture strongly focuses on high-voltage operations, technical project execution, and infrastructure development, with customer orientation primarily aimed at system users rather than consumers (source: tennet.eu).
Not seeing the right role? Join our talent pool