Extreme heat and drought are disrupting Europe's energy system, reducing refinery efficiency, forcing cuts to nuclear and hydropower generation, and driving diesel refining margins toward 20-year highs.

Temperatures forecast to reach 37C in Budapest and Vienna as Hungary switches off vital nuclear plant with falling water levels in Danube affecting cooling capabilities

From taps to power grids, Europe struggling under heat, drought-

Low water levels limit power production and shipping across continent

Austria recorded its highest temperature ever as a severe heatwave grips Europe. Hungarians reduced power use to ease grid pressure amid a significant drought. Italy issued red…