According to the Routekaart 2030 the Dutch government will develop an additional 7 GW of wind energy areas until 2030.
TenneT has been appointed by the Dutch Ministry of Economic Affairs and Climate to develop two offshore grid connection systems for integrating the IJmuiden-Ver wind parks into the Dutch power grid.
These parks are a vital part of the Dutch government’s ambitions. Each grid connection includes a 2 GW offshore converter platform.
To link the offshore grid connections to the onshore grid system a suitable cable system is required. This cable system shall be the connection between a 2 GW platform and a land station. To be able to transport the required 2 GW power, a submarine cable system operating at a voltage level 525 kV DC, using extruded insulation types is needed. At this moment in time a submarine cable system with such specification is not available on the market, and TenneT wants to stimulate the development of such submarine cable system.
The need for the development of such a cable system is derived from the expectation that this will reduce the costs of manufacturing and installation, not only for the cable system itself but also for the entire grid concept including the HVDC offshore platform and the HVDC land station. An additional positive consequence should be that the impact on the environment is reduced.
The intention is to develop a standard which can be used for all similar projects within TenneT but also be used by other TSO’s. If other TSO’s make use of such a standard it could lead to clarity and certainty for ventures about DC submarine cable requirements for this kind of capacity of TSO’s.
The requirements of this Development Program will apply for this and all other future 525 kV DC submarine cable projects of TenneT using XLPE insulation material.
Applications for participation in the development programme and subsequently a limited compensation for the costs of the cable system development can be submitted during the period from 16 December 2019 to 17 January 2020.