GE announces new 4-MW offshore wind turbine

GE's 4.1-113 4-MW turbine builds on the company's 3.5-MW model and will be installed in the Gotehnburg, Sweden harbor in the second half of 2011.

GE (Brussel, Belgium) has announced the introduction of its 4.1-113 wind turbine, a 4-MW class machine that is optimized for offshore use. GE has signed a contract to supply a 4.1-113 wind turbine, along with associated services, to Göteborg Energi for installation in the Gothenburg, Sweden harbor in the second half of 2011, GE announced at the European Wind Energy Association’s EWEA 2011. This project is supported by the Swedish Energy Agency through its technology program, demonstrating its interest in leading offshore technology.

“We are proud to announce the next milestone in our offshore strategy plan. Our 4.1-113 wind turbine represents our most advanced technology. It is the only direct-drive wind turbine designed specifically for offshore today,” said Victor Abate, vice president—renewable energy for GE Power & Water. “With Göteborg Energi we have a great partner and we welcome the support of the local authorities on our project.”

With fewer moving parts, the direct-drive technology provides a simple, reliable design with built-in redundancy and partial operation for major components, all focused on keeping turbines operating reliably at sea. The direct-drive technology eliminates costly gearbox parts, reducing operating expenses, and also relies on an innovative modular approach to maximize in-situ repair and reduce the need for large repair vessels.

The 4.1-113 design builds on the evolution of the 3.5-MW direct-drive design. The base design has been operating since 2005 on a coastal site in Norway in a harsh environment with high wind speed and high turbulence.

This project in Gothenburg harbor is part of GE’s offshore footprint European strategy, representing a €340 million investment in its offshore business.