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.