London's Heatwave Plan: Balancing Passive & Active Cooling

0:00On March 11, Londoners are facing growing risks of overheating right in their own homes as climate change brings hotter summers to the city's dense. Urban, landscape, the urban heat island effect traps warmth and built-up areas, making temperatures up to 10 degrees higher than in surrounding suburbs. Last year saw a record UK heat with more than one tenth of the nation's 3,271 heat-related deaths happening in the capital. City Hall is working on a new heat-risk delivery plan to tackle this, including cool public spaces, thousands of water refill points, and more trees. Planted across the city, summers are already getting hotter and drier each year. Still, the focus remains on passive cooling in new buildings, like green roofs and shading, while active options such as air conditioning are. Discurs to avoid adding to the heat and energy demands. Earlier this week, experts told the London Assembly that the current planning rules create an unhelpful divide between passive and active cooling. They argue both should work together.

1:03Passive measures to cut everyday heat build-up and efficient air conditioning for extreme heatwaves. Without this balance, people might turn to cheap and efficient units anyway. Researchers point out air conditioning use in British homes jump nearly 7 fold from 2011 to 2022, a trend that's hard to ignore. Others warn that pushing too hard against it strains the energy grid, while planning rules clash demanding big windows for daylight, but ignoring, shading, which lets heat pour in. As London updates its plans, the key will be blending these approaches with a real shift in how buildings are designed, ensuring homes stay cool. Without locking residents into tough choices during the worst heat.