Dark Doldrums Overshadow Europe’s Energy Markets
www.nytimes.com
Periods of low sun and wind, a weather pattern known as a Dunkelflaute, can increase electricity prices and stoke political tensions.

Designing for this is going to be absolutely key. It means some mix of clean non-emitting generation, such as geothermal or nuclear, and long-duration storage, such as flow batteries or hydrogen.