Key Takeaways American Water Works is installing battery energy storage at its Sierra Lakes Water Treatment plant.The $800K Hillview project is partly funded by California's Self-Generation Incentive Program.Battery Storage helps AWK ensure reliable service during outages and Public Safety Power Shutoffs.American Water Works (AWK) announced that its subsidiary, California American Water, is installing battery energy storage systems (“BESS”) in high-risk regions across the state. The goal is to improve relia ...