Construction Begins on World’s Largest Monopile Factory

01 May 2023

The facility will be erected as an addition to Sif's current facilities at the 62-hectare Maasvlakte 2 site in Rotterdam. In February, the business finalised its investment decision to build the largest monopile foundation manufacturing facility in the world. The facility's initial manufacturing operations are expected to begin in the second half of 2024.

The expanded production facility is anticipated to allow Sif to produce the equivalent of 200 XXXL, 11-meter diameter, 2,500-ton reference monopile foundations annually, greatly increasing its total combined capacity to 500 kilotons annually.

According to Sif, the design allows for future improvements that would enable even bigger diameters.

The business forecasts EBITDA of EUR 135 million in 2025 and of at least EUR 160 million per year starting in 2026 once the enlarged production unit is completely ramped-up, which is anticipated in the first half of 2025. According to Sif, this results in a payback time of three to four years.

The company's current total order book stands at 662 kilotons thanks to two launching clients, one of which is Ecowende, a joint venture between Shell and Eneco, who have jointly committed to 348 kilotons of production, either booked or in exclusive negotiation.

The Dutch company will receive PEMA manufacturing automation technologies from Finnish welding expert Pemamek.

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