Hydropower has the largest share of renewable energy generation capacity globally, with schemes ranging from pico-scale (<5 kW), powering individual dwellings, to large (>10 MW), providing power for cities and regions. However, with climate change already disrupting precipitation patterns, global hydrological cycle, and energy demand, the future contribution and viability of the hydropower sector is uncertain. Understanding these changes is vital for robust policy that ensures future power provision, as well as the continued shift from fossil fuels for energy production. This session therefore seeks contributions aimed at identifying future climate change impacts on hydropower, specifically: (1) generation capacity, timing, and seasonality; (2) environmental and economic viability; (3) renewable energy policy; and (4) other factors relating to hydropower operation, such as water quality. Contributions are welcome from studies across a range of spatial scales, individual and multi-scheme assessments, and for different hydropower generation methods, such as impoundment, pumped-storage, and run-of-river.