Argonne Hydropower demonstration (IMAGE) DOE/Argonne National Laboratory Caption Argonne's hydropower and clean energy experts demonstrated how pumped storage hydropower works with a "water battery" that charges when water is pumped up and discharges when water flows, generating clean hydroelectric power. Credit (Image by Argonne National Laboratory.) Usage Restrictions Original content 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.