Signal Coatings raise power line capacity about 30% and cut surface temperature up to 15 degrees

Summary

The report shows passive radiative cooling spreading from buildings to electrical infrastructure. In the United Kingdom, AssetCool has developed a coating that keeps power cables cool enough to carry around 30% more electricity through existing lines. That raises capacity without new wires or extra energy use. SRI International's self-cooling paint applies the same principle to grid and building components, lowering surface temperatures by up to 15 degrees below ambient where heat limits performance. SPACECOOL, an offshoot of Osaka Gas, makes a film that reflects 95% of sunlight while radiating a similar share of heat to space. That film is now used on shipping containers and energy switchboards, showing the technology's reach beyond rooftops.