Analyzing the Impact of Streamflow Drought on Hydroelectricity Production: A Global‐Scale Study

Electricity production by hydropower is negatively affected drought. To understand and quantify risks of less than normal streamflow for hydroelectricity (HP) at the global scale, we developed an HP model that simulates time series monthly worldwide thus enables analyzing impact drought on HP. The based a new database (GHD), containing 8,716 geo-localized plant records, values computed hydrological WaterGAP with spatial resolution 0.5°. GHD includes 44 attributes covers 91.8% globally installed capacity. can reproduce trends, seasonality, interannual variability was caused both (de)commissioning plants variability. It also simulate its reasonably well. Global risk maps reduction were generated 0.5° grid cells countries, revealing 67 out 134 countries suffer, in 1 10 years, from more 20% mean annual 18 40%. advanced assessments impacts national to international levels.