HVDC Tenders

50Hertz Offshore GmbH is procuring turnkey engineering, procurement, construction, transport, installation, and commissioning of a 2 GW HVDC offshore converter platform and system for the NorthSeaConnector 1 Project, with scope limited to the offshore converter station including jacket substructure, topside, and transport/installation services. The contract covers the complete offshore platform with all auxiliary systems required for operation and connection to the German high-voltage grid, while the onshore converter station remains with the original contractor awarded in June 2024. No specific deadline or completion date is stated in the tender documentation.

TenneT TSO B.V. is procuring RTDS (Real Time Digital Simulator) units and related research and testing services for the National Facility Digital Twin Electricity System, a joint initiative with Delft University of Technology to develop digital simulation capabilities for the Dutch electricity grid. The project focuses on real-time network simulation, hardware-in-the-loop testing, and HVDC integration research. This is a Voluntary Ex-Ante Transparency Notice with tender documents available for details.

Terna S.p.A. is issuing a contract variation (Variante n.2) for construction work on the SA.CO.I. 3 project, a three-terminal bipolar HVDC interconnection between Sardinia, Corsica, and mainland Italy with capacity of 2 × 200 MW and 2 × 75 MW at ±200 kV. The variation modifies the existing contract for the turnkey development and realization of conversion stations and associated activities for this interconnection. No value or deadline is specified in the available information.

Red Eléctrica de España is procuring technical assistance services for HVDC converter stations related to the COMETA project. The service covers installation and support operations for the converter facilities. No specific contract value or deadline is provided in the available information.

TenneT Offshore GmbH is procuring engineering, procurement, construction, installation and commissioning of an HVDC grid connection system for the LanWin4 offshore wind project in Germany, including an offshore converter platform and converter technology as an integrated EPCI solution. The project connects large-scale offshore wind generation capacity to the German onshore transmission system as part of TenneT's 2GW Program. No specific contract value or deadline is stated in the tender information provided.

TenneT TSO GmbH is procuring construction work for turnkey installation of an HVDC cable system (A 060_Cable/Lot 05) in Germany, specifically involving design modifications to link boxes. No budget or deadline information is provided in the available details.

TenneT TSO GmbH is procuring construction work for a turnkey installation of an HVDC cable system (A 060) in Germany, specifically Lot 04 involving link box design modifications. No budget or deadline information was provided in the tender details.

LITGRID AB is procuring data-communications equipment and services for the NordBalt HVDC connection, specifically DWDM (Dense Wavelength Division Multiplexing) gear. The tender is identified as 26PP-245 with no specific budget or deadline stated in the provided information.

50Hertz Offshore GmbH is procuring microtunnel construction work with cable ducts for two HVDC cable system landfalls at Vierow in Germany—one for the Ostwind 4 project and one for the Bornholm Energy Island project. Both microtunnels will be constructed at the Greifswalder Bodden shores in Mecklenburg-Western Pomerania. No contract value or deadline is specified in the available information.

Mines Paris PSL is procuring the supply, installation, and commissioning of an EPowerGrid high-power electrical systems test bench for its Versailles campus, including simulators, power distribution units, HVDC safety systems, cooling infrastructure, and operator interfaces. The estimated value is €3.3 million with a deadline of 30 July 2026.

Germany's four transmission system operators (50Hertz, Amprion, TenneT, and TransnetBW) are conducting a market consultation to identify barriers to transitioning 525 kV HVDC multiterminal systems from single-vendor to multi-vendor configurations. Respondents are invited to complete a structured questionnaire addressing technical and commercial gaps related to this transition. Submissions are due by August 31, 2026.

Germany's four transmission system operators (50Hertz, Amprion, TenneT, and TransnetBW) are conducting a market consultation to identify barriers to transitioning 525 kV bipole HVDC multiterminal systems from single-vendor to multi-vendor configurations for DC-Hub projects. Respondents are requested to complete a structured questionnaire and submit feedback by 31 August 2026 to [email protected].