Wind turbine offshore

Offshore wind turbines are large structures installed at sea, capable of generating more energy than onshore versions due to stronger and more consistent winds.

About this subject

Offshore wind turbines represent the most advanced frontier of wind energy. Installed at sea, typically in depths ranging from 20 to 60 meters, they harness stronger and more stable winds. A single modern turbine can exceed 200 meters in height and generate up to 15 megawatts, enough to power thousands of homes. Foundations can be fixed to the seabed (monopiles, jackets) or floating, the latter essential for deep waters over 60 meters.

In Brazil, the offshore potential is immense, especially in the Northeast and South regions. The country has a long coastline with exceptional winds, and the government has already held area auctions for exploration. Pilot projects, such as the one in Pecém (Ceará), are underway. By 2026, Brazil's first offshore turbines are expected to start operating, contributing to the diversification of the energy matrix and emission reductions.

Globally, Europe leads, with the United Kingdom, Germany, and Denmark standing out. The largest offshore turbine in operation is the Vestas V236-15 MW, with 115-meter blades. Offshore wind farms are also common in China and the USA. Offshore turbines face challenges like saline corrosion, remote maintenance, and visual impact, but the energy benefits are significant. Floating turbine technology, which avoids fixed foundations, is expanding exploitable areas into deeper waters, opening new frontiers for clean energy.

Frequently Asked Questions

What is the maximum depth for fixed offshore wind turbines?

Fixed turbines are viable up to about 60 meters depth. Beyond that, floating platforms anchored to the seabed are used.

What is the largest offshore wind turbine in the world?

Currently, the largest is the Vestas V236-15 MW, with a height of 236 meters and 115.5-meter blades, capable of generating 15 MW.

Does Brazil already have offshore wind farms?

No commercial farms are in operation yet, but the government has auctioned areas and pilot projects are underway, expected to start by 2026.