Three floating turbine platforms were towed 10 miles off the Occitan coast into a Mediterranean marine park where the seabed drops past 300 feet, well beyond the depth any fixed foundation has ever reached

The turbine on top of this thing is ordinary.

It is the same class of machine bolted to steel legs all over the North Sea, driven into the seabed with a hammer.

Here there is no seabed to hammer into, or rather there is, and it is far too far down.

Water has to be dragged with the plate before the plate can move, which adds effective mass and viscous damping, and the hull stops following the sea.

So the interesting object is not the turbine at all.

It is the steel underneath it, which has to stay upright while everything around it moves.

That is the whole engineering problem.

Holding a 600 foot lever steady on water

A fixed foundation works because the ground takes the overturning moment.

Wind pushes the rotor, the tower wants to tip, and the pile in the seabed refuses. Past roughly 165 feet of water that stops being economic, and the deepest fixed turbines anywhere sit near 190 feet.

A float has no such anchor point, so it has to resist by shape.

Three ballasted columns spread wide give the hull a righting moment: tip it and the loaded column rises, the opposite one sinks, and buoyancy pushes back.

That alone would still bob with every swell, which is the real enemy, because a rotor that pitches back and forth is a rotor losing energy and gaining fatigue.

So a wide horizontal plate is hung at the base of each column.

Water has to be dragged with the plate before the plate can move, which adds effective mass and viscous damping, and the hull stops following the sea.

The site and the steel standing in it

The water here runs between 230 and 330 feet deep only 10 miles out, because the shelf off Leucate and Le Barcarès falls away fast.

The whole area is a marine natural park, about 1,550 square miles of it, the first of its kind in the Mediterranean.

Each hull is roughly 2,200 tons of steel, built at a yard near Marseille and floated along the coast.

The tower went on in three sections weighing about 660 tons together, then a nacelle of 419 tons, then three blades of 262 feet apiece.

Hub height finished at 341 feet above the sea, blade tip at 610 feet.

The wind that has to be survived is the tramontane down from the Pyrenees and the mistral from the northwest, both of which arrive as hard irregular gusts rather than a steady push.

What the farm has actually delivered

The last turbine went in on April 29 of 2026 and first power reached the grid days later, on May 4.

Full commercial operation followed on July 10, and the farm reached its full rated output on August 17.

That output is 30 MW across three machines, expected to make about 110,000 MWh a year, roughly what 50,000 people use, across a planned life of 20 years.

Ocean Winds chief executive Craig Windram tied the milestone to fifteen years of work in floating wind rather than to the site itself.

Around 85 percent of the direct suppliers were French, and about 40 percent came from the surrounding region.

Operations now run with a crew of just over twenty, and one of the three hulls carries 32 mesh habitats bolted below the waterline, put there to see what settles on them.

What has not been shown yet

The habitat units are an experiment with no published results, which is exactly what they are meant to be. Structures at sea attract life whether anyone plans it or not, and the open question is whether designing it in changes the outcome at all.

The claim that this is the first floating project inside a protected marine area also needs care. A marine natural park is a managed multiple use zone, not a reserve, and the operator’s own wording is narrower than the one in circulation.

Thirty megawatts is a pilot. It answers whether the hardware survives, not whether it pays, and the cost per megawatt hour has never been published, which is the same gap left open by every other prototype from a Danish turbine to the long running work on blade erosion.

Motion is also a maintenance bill nobody has twenty years of data on.

The product is the hull

Chains have to be inspected for fatigue on a schedule a fixed project never needs, and the power cable running to shore flexes thousands of times a year rather than lying still.

Access is the other cost, because a boat has to meet a platform that is moving.

All of which is priced into the next step, a 250 MW project awarded in the same waters, where the same hull has to jump from three units to something approaching a commercial fleet, as the power announcement framed it.

The Mediterranean has coastlines in Spain, Italy and Greece where the bottom drops just as fast, as the platform designer sets out.

The turbine was never the export.

The floating platforms underneath it always were.