Offshore Substation

The Hollandse Kust Zuid (HKZ) offshore substation sits in the southern part of the Dutch North Sea — one of the largest offshore wind projects in the Netherlands, operated by Vattenfall and connected to the Dutch grid via TenneT. The substation is the electrical hub of the wind farm, collecting power from the surrounding turbines and transmitting it back to shore via high-voltage cable.

These images show the structure's deck, steel beams, walkways and cable trays framed against open sky and the changing light of an offshore day. There is contrast in the work-worn surfaces, in the reflections where light catches metal, and in the sense of human scale where fittings and handrails appear alongside the larger structural elements.

Also visible in this set are wind turbines within the HKZ array, and the yellow control tower at Ijmuiden on the Dutch coast — a landmark for any vessel transiting in and out of the port.

For more photography from offshore substations and renewables work, visit the Wind Industry gallery & portfolio.

Wind farm substation

The Hollandse Kust Zuid offshore wind farm is one of the largest in the Netherlands, located in the southern North Sea off the Dutch coast. The offshore substation at its heart collects the electrical output from the surrounding turbine array and transmits it back to shore via subsea cable — a critical piece of infrastructure in any large-scale offshore wind project.

These photographs show the substation from several angles and distances — the platform structure, deck equipment, and its relationship to the turbines and sea around it. Low sun and clear conditions on this rotation made for good contrast across the steelwork and gave the images a cleaner quality than overcast offshore days typically allow.

The project is operated by Vattenfall and connected to the Dutch grid via TenneT, the Dutch and German transmission system operator. It is one of several major offshore wind farms that have shaped the southern North Sea energy landscape in recent years.

For more photography from offshore substations and wind farm operations, visit the Wind Industry gallery.