IN-DEPTH: Siemens floats novel idea

A 1:40 scale model of the float-over barge is put through its paces at Newcastle University

A 1:40 scale model of the float-over barge is put through its paces at Newcastle University

Hoisting the 9,300-tonne DolWin Alpha converter station onto its offshore foundation was a high-price affair.

Day rates for the vessel brought in for the job — Heerema’s gargantuan Thialf, a titan from the offshore oil industry capable of lifting 12,000 tonnes — can run as high as €1m ($1.35m) a day.

But it was a cost that had to be borne by transmission system operator TenneT to catch up on its behind-schedule programme to build Germany’s North Sea offshore grid network — budgeted at €1bn per GW.

Tens of converter stations like the 800MW DolWin Alpha — which will soon channel power from a Log in to read complete article.

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