Heat failure: Why essential tech fails when the temperature rises

Heat failure: Why essential tech fails when the temperature rises explains how extreme heat is stressing electricity, telecoms, and other infrastructure. On 23 June, during one of France’s hottest days on record, an electric transformer malfunctioned in Ergué-Gabéric, Brittany, leaving more than 100,000 people without power. Local authorities described it as heat-related, and RTE confirmed that a video posted online showed one of its facilities. The article notes that equipment and railway signalling cabinets can falter during heatwaves, and it cites estimates that gas power output drops by about 10% at 40C versus 20C. It also says solar output plateaus above 27C and slowly falls, even as sunshine can boost relative gains. Engineers increasingly adapt networks, including cooling and managing cable “droop.”