Our Asymmetric Floating Tower (AFT) is designed to minimize costs and withstand the offshore conditions
Reducing the costs of manufacturing, installation, operations, maintenance and end-of-life removal is the key to achieving low cost of energy over the lifecycle of offshore wind turbines.
Our patented Asymmetric Floating Tower (AFT) offers significant advantages including an estimated 75 percent reduction in system weight compared to competing oil-platform-based designs; and weight is a surrogate for the critical costs of manufacturing, transportation and assembly. The AFT also features a simple installation and high reliability in the offshore environment.
The AFT has a flexible downwind rotor configuration that absorbs wind and wave forces by allowing motion. Such an approach can be found in nature, where for example, palm trees bend in hurricanes that destroy other trees. Our design approach builds on years of experience in flexible designs from the U.S. aerospace and rotorcraft industries.
Traditional wind turbines use rigid upwind rotors while attempting to prevent motions such as blade bending toward the tower that may result in catastrophic impact in gusty winds. These rotors are then combined with heavy ballasted offshore oil platforms. This approach is costly and can result in reduced system reliability.
Our Asymmetric Floating Tower (AFT) is covered by US and international patents. This patent broadly defines a new class of floating platform that is significantly different from the existing oil-platform-based systems of spar buoys, semi-submersibles, and tension leg platforms used by our competitors. Additional U.S. and international patents are underway.