KEY Chinese cities have warned that homes and factories face new power outages as historic demand and supply shortages strain energy grids.

Populous centers, including Beijing and Xi’an, have alerted electricity users there will be scheduled disruptions as grid operators struggle to maintain overloaded networks. Eleven provinces, including eastern manufacturing hubs and landlocked central China, which also suffered outages during last winter’s cold spell, reported record demand and peak-load surges last week, according to the State Grid Corp. of China.

The nation’s electricity providers are experiencing similar pressures seen in the United States and other hot spots around the world as temperatures reach alarming levels during the early weeks of summer. Exacerbating the situation in China is a strong economic rebound from the pandemic, which helped spur a 10 percent surge in power consumption last month.

The heat waves and increased power demand are putting further strain on the coal industry, China’s main energy source. Thermal coal futures climbed to as high as 926 yuan (US$142.70) per ton yesterday, approaching an intraday record of 944.2 yuan set in May, as supply concerns grow.

China’s top economic planner, the National Development and Reform Commission, has vowed a massive buildup of coal reserves. It sent a notice to the six biggest State-owned power firms requiring them to restock enough coal for more than seven days by July 21 to prevent unplanned blackouts. The policy paper, which has been circulating since Monday, suggests to traders that the high demand will last until mid-August.

NDRC spokesman Jin Xiandong said Monday that China will also encourage more output of wind, solar, hydro and nuclear power to meet summer peak demand.

Meanwhile, the heat waves across the country are causing floods that disrupt coal production and transportation at mines and harbors, further creating upheaval in supplies. (SD-Agencies)