The four largest Dutch cities (Amsterdam, Rotterdam, The Hague and Utrecht) and their surroundings constitute the Randstad region in the Netherlands. With a population of more than 8 million people, it is Europe’s most densely populated area. Randstad has a high energy demand, which needs to be reliably met and secured also in the future. However, infrastructure construction measures are particularly challenging in such a conurbation. TSCNET shareholder TenneT, the Dutch-German transmission system operator (TSO), has now made an elementary contribution to security of supply of the Randstad.
After a construction period of five years, the 60-kilometer-long Randstad 380kV North Ring power line was put into operation on 10 October. More than 1000 people from the region, 300 landowners, over 25 responsible authorities, 13 contractors and 200 TenneT employees were involved in its construction. The new high-voltage line will reliably supply millions of households and companies with electricity. It will also provide the transmission capacity required for green electricity from North Sea wind farms. As a complementary measure, the existing 150kV connections in the region were adapted and two new high-voltage substations have been built in Beverwijk and Vijfhuizen.
At 151 locations along the route, Tennet installed innovative Wintrack pylons that consume less space, reduce magnetic field zones and, due to their slim and streamlined shape, fit much better into their surroundings than conventional steel lattice pylons. Ten kilometres of the North Ring have been laid underground. The aluminium cables used by TenneT are a novelty. They are cheaper than conventional materials and conduct electricity more efficiently, which means that their carbon footprint is smaller.