Nature Energy, Published online: 16 July 2026; doi:10.1038/s41560-026-02109-3

Decarbonized grids may face rising resource adequacy risks as weather-driven renewable variability and climate change jointly affect supply and demand. A high-resolution model shows that these risks stem from multi-day power shortfalls and system design, but can be reduced through region-specific, climate-informed siting and transmission planning.