TenneT commissions important high-voltage electricity connection between Eemshaven and Groningen

Last Friday, Dutch grid operator TenneT commissioned the 40 km long new high-voltage connection between Eemshaven and the high-voltage substation Vierverlaten, near the city of Groningen. The 380 kV connection is of great importance for electricity transmission from Eemshaven.

The construction of the power connection took 3 years, after a preparation time of 13 years. Simultaneously with the new connection, the new 380 kV high-voltage substation at Vierverlaten went into operation. From here, TenneT distributes electricity to high-voltage connections with other parts of Groningen, Drenthe. Friesland and the grids of regional grid operator Enexis.

Important ‘highway’

The new high-voltage connection is of great importance for electricity transmission from Eemshaven. In recent years, this area has become an energy hub of national and international importance with power plants, wind and solar parks, as well as connections to all wind regions. For instance, the high-voltage cables from Denmark and Norway and from wind farms in the North Sea come ashore here. In the coming years, the volume of energy transport in this region will continue to grow.

Opening act by Manon van Beek (CEO of TenneT, land owners Goitzen and Jolanda Dijk from Den Ham and Commissioner of the King René Paas
Opening act by Manon van Beek (CEO of TenneT, plot owners Goitzen and Jolanda Dijk from Den Ham and Commissioner of the King René Paas

The Ministry of Economic Affairs is currently investigating connecting 4.7 GW of wind farms from the North Sea to Eemshaven. Expansion of the 380 kV grid is also under investigation. In Eemshaven, this involves a new high-voltage substation at Oostpolder and from Vierverlaten a new 380 kV connection towards Noordoostpolder (Ens high-voltage substation) with connection to the national 380 kV ring. Last month, the Ministry of Economic Affairs & Climate published the alternatives to be investigated for the Vierverlaten-Ens connection and from there further to Diemen.

Project not yet completed

An important part of the Eemshaven-Vierverlaten project is the removal of the ‘old’ 220 kV connection (pylons and conductors). Due to the rapid and large increase in solar power in Groningen in particular, TenneT has been forced to start the demolition work three months later than planned. However, these will be completed by spring 2024 as planned. In addition, there is the obligation to realise a landscape programme with all kinds of green and cultural-historical measures in a zone on either side of the new connection. TenneT is investing EUR 15 million in this programme and nature compensation, including for the preservation of meadow birds. The province of Groningen will coordinate the implementation, which must be completed in 2028. Source: TenneT

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