Renewable Energy Innovation (IMAGE) DOE/Sandia National Laboratories Caption Sandia National Laboartories’ Twistact technology proves beneficial in lowering costs, improving sustainability and reducing maintenance for next-generation direct-drive wind turbines. Credit Photo by Zhang Fengsheng Usage Restrictions No restrictions. License Public Domain Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.