Power blackouts now rolled out in Beijing and Shanghai

The Beijing office of State Grid Corp. of China said it will begin scheduled power outages in select areas through Sunday. Electricity will mainly be cut for a few daytime hours at a time.

The rolling blackouts will affect at least four districts in the capital. They include Xicheng and Dongcheng, which house government agencies and residences of top officials; Chaoyang, where many foreigners live; and Haidan, where several tech companies are located, the report said.

"The main purpose is to carry out regular equipment maintenance and upgrades to the power grid," State Grid said in a social media post-Tuesday. "At present, the power grid in the capital has sufficient, stable and orderly supply."

The exact number of homes and businesses affected has not been disclosed. Some media outlets have reported that the blackouts cut through about 60 grid sections, which would translate to more than 10,000 people being without power. Beijing has a population of 22 million people.

The scheduled blackouts mainly target private residences, largely sparing factories.

Shanghai, home to 26 million people, will conduct rolling blackouts through Sunday as well. The national power shortage has caused suppliers of Apple and Tesla to suspend operations in Jiangsu Province, adjacent to Shanghai.

Factories run by Japanese manufacturers in Guangdong Province have been affected, Nikkei said.

Taking the brunt of the power shortage in China's Rust Belt region in the northeast. In Shenyang, a city in Liaoning Province, traffic signals have ceased to work, leading to congestions, according to media reports. In Jilin Province, Jilin City's water supply has been unstable and officials have called on citizens to stock up on water.

The biggest reason for the electricity shortfall is the waning operations at coal plants. The price of coal has risen by more than 30% from a year earlier, forcing coal-fired plants to reduce power output.