Calling 2025 “the year of the water battery,” the International Hydropower Association (IHA) touted new global pumped storage additions in its 2026 World Hydropower Outlook. IHA said a total of 28 GW of hydropower capacity was commissioned last year, including a record 11.7 GW of pumped storage. For the first time, global pumped storage capacity has surpassed 200 GW, with a further 243 GW currentl...