European nuclear reactors (notably in France along the Rhône and Loire rivers) require vast river water volumes for cooling. High ambient river temperatures violate environmental discharge limits, forcing thermal curtailments right when heatwave air-conditioning demand spikes.
Drought lowers water depth at critical waypoints like Kaub, Germany. Barges must carry lightened loads (down to 25% capacity), disrupting coal, chemical, and industrial supply lines, driving up fuel prices, and cascading into regional power plant feed shortages.
Extreme air temperatures cause continuous welded rail tracks to expand and buckle, triggering mandatory speed limits. Concurrently, overhead power cables expand and sag under high electrical load and solar radiation, causing widespread transit slowdowns.