Nakwol Offshore Wind Power Completes Installation of 64 Monopile Substructures

Completed in 13 Months
Manufactured at GS Entec's Ulsan Plant

Officials from Nakwol Offshore Wind Power are taking a commemorative photo to celebrate the completion of the installation of 64 monopiles. Nakwol Offshore Wind Power

Nakwol Offshore Wind Power, which is under construction in the Nakwol-myeon area of Yeonggwang-gun, South Jeolla Province, announced on June 11 that it has achieved 100% completion of the installation of 64 monopiles, the project’s substructure.

Samhae ENC, which is in charge of offshore construction for the Nakwol Offshore Wind Power project, stated that, together with domestic partners such as Toseong Construction and Hansan Maritime, it completed the installation of 64 monopiles in about 13 months, from May 5, 2025 to June 10, 2026.

The monopiles used in this project were manufactured at the Ulsan plant of GS Entec, a domestic company. Each is a massive steel structure with a diameter of 7.5 meters, a length of about 70 meters (equivalent to a 24-story apartment building), and a weight of approximately 880 tons.

GS Entec accumulated experience and a track record by manufacturing and supplying monopiles for the first time at its Ulsan plant for the Nakwol Offshore Wind Power project. Based on this, the company is now pursuing supply contracts for monopiles in other offshore wind power projects in Korea and overseas, including Japan.

Nakwol Offshore Wind Power explained that, by receiving timely delivery of 64 monopiles produced with advanced technology introduced from Europe (Sif Group) through GS Entec, the company was able to carry out the construction stably.

Nakwol Offshore Wind Power emphasized that Bada Engineering, an affiliate of Myeongun Industrial Development, ensured the perfection of the substructure design based on geological surveys conducted at more than 120 sites using the Samhae 1, a geotechnical survey vessel constructed by the company. The installation of the monopiles utilized the Hansan 1, a jack-up type installation vessel (WTIV).

Nakwol Offshore Wind Power explained, "By boldly choosing the monopile method instead of the jacket structure, which had been used in most domestic offshore wind power projects, we were able to dramatically reduce the construction period and lower construction costs."

This content was produced with the assistance of AI translation services.