Alex Kimani Alex Kimani is a veteran finance writer, investor, engineer and researcher for Safehaven.com.  More Info Premium Content By Alex Kimani – Jun 26, 2025, 7:00 PM CDT China dominates global hydropower storage. Pumped storage remains the world’s top long-duration storage technology. China’s Fengning station alone can deliver 40 GWh of power—dwarfing U.S. battery sites like Moss Landing, which has just 3 GWh capacity. Previously, we reported that the United States is witnessi...