Wind Farm Test Area (IMAGE) American Institute of Physics Caption Research at the Caltech Field Laboratory for Optimized Wind Energy, directed by John Dabiri, suggests that arrays of closely spaced vertical-axis wind turbines produce significantly more power than conventional wind farms with propeller-style turbines. Credit John Dabiri, Caltech Usage Restrictions None License Licensed content 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.