Strange movements in the Californian sea led to the discovery of several 400-tonne spheres. Initially, speculation arose about new underwater phenomena or even extraterrestrial life. However, the Fraunhofer Institute in Germany clarified that these spheres are part of a revolutionary renewable energy storage system.
The StEnSea (Stored Energy in the Sea) project, developed by the Fraunhofer Institute, utilizes the ocean's natural pressure to store clean energy. These hollow concrete spheres, located 600 meters deep, function as giant batteries. When water rushes into the spheres, it moves turbines to generate electricity.
This system occupies no land space and minimizes impact on the marine ecosystem. The US Department of Energy is considering producing even larger spheres, up to 30 meters in diameter. Dr. Ernst, the project lead, envisions replicating the system in deep coastal regions like Norway, Portugal, and Japan, marking a significant step in renewable energy technology.