Correlation communities (IMAGE) American Institute of Physics Caption Correlation communities: Panel A depicts pricing before the European electricity crisis, while Panel B shows pricing during it. Credit Julius Trebbien, Anton Tausendfreund, Leonardo Rydin, and Dirk Witthaut Usage Restrictions Journalists may use this image only with appropriate credit and when reporting on this research. License Original 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.