Why are southern China power grids under strain from heatwaves?

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Southern China Power Grids Strained by Unrelenting Heatwaves

Southern and eastern China are currently experiencing significant strain on their power grids due to prolonged and intense heatwaves. Demand for electricity, particularly for air-conditioning, has surged dramatically in major urban centres and manufacturing hubs. Forecasters anticipate that most of southern China will endure temperatures exceeding 35 degrees Celsius over the next three days, with some regions expected to surpass 40 degrees Celsius.
Soaring Demand for Cooling Amidst Record May Temperatures

The recent heatwave has led to a substantial increase in electricity consumption as residents and businesses rely heavily on air conditioning. Shanghai, a major metropolis, recorded its hottest day in May in over a century, highlighting the severity of the extreme weather. This surge in demand for cooling has placed an unprecedented burden on the region's power infrastructure, occurring weeks earlier than typically observed.
Significant Load Increases in Key Manufacturing and Island Provinces

Manufacturing centres in southern China, such as Guangdong, have witnessed a sharp rise in electricity demand. China Southern Power Grid, a primary grid operator, reported its peak power load exceeding 200 million kilowatts, a level usually seen closer to historical highs and significantly earlier than usual. The island province of Hainan also saw its power load surpass seven million kilowatts for the first time, while Guangxi experienced record power load twice in recent days, indicating widespread strain across southern grids.
Higher Temperatures Expected Compared to Previous Year

The current heat event is expected to continue, with forecasters indicating that temperatures in parts of the Yangtze River delta and southwest China will be 1-2 degrees Celsius higher than the same period last year. This sustained period of elevated temperatures is likely to maintain the high demand on power grids, potentially exacerbating the strain if the heat persists or intensifies throughout the summer months.

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Why are southern China power grids under strain from heatwaves?

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