matter more offshore because some of the fixed costs are rather high. In particular, the cable and the offshore transformer station can cost several tens of millions of euros, which requires more than a few MW of capacity to bear if you want any kind of profitability. You also need specialized vessels and cranes for installation and then maintenance, so scale does matter, at least up to a certain point (which mostly depends on location and can vary depending on the regulatory framework - who pays for the cable, whether your permit gives you rights to a given area, to a number of turbines or to a given capacity)

In the long run, we're all dead. John Maynard Keynes