Because subsidies for water storage power projects are reshaping how we balance energy grids and fight climate change. This article breaks down the who, what, and how of these subsidies, spiced with real-world examples and a pinch of humor. It is a configuration of two water reservoirs at different elevations that can generate power as water moves down from one to the other (discharge), passing through a turbine. The system also requires power as it pumps water. . its close engagement with the DOE National Laboratories. Five National Laboratories—Argonne National Laboratory, Idaho National Laboratory, National Renewable Energy Laboratory, Oak Ridge National Laboratory, and Pacific Northwest National Laboratory—work as a team to provide strategic insight and. . The U. Department of Energy (DOE) estimates PSH represents 93% of all U. utility-scale energy-storage capacity. It has been helping provide clean grid power for over a century. Top 3 potential innovations to drive down the 2030 levelized cost of long duration. . $15M OE funding opportunity for pre-competitive R&D partnerships.