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Xinjiang powers ahead as nation's energy distributor

Advances in green technology, improved electricity transmission infrastructure help region achieve goals

By MAO WEIHUA,WANG SONGSONG and GUO YANQI in Changji | CHINA DAILY | Updated: 2025-05-30 07:52
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A worker installs a spare rectifier transformer bushing at Balikun converter station in Hami, Xinjiang. DING LEI/XINHUA

Ensuring supply

Solar and wind power are inherently intermittent — their output fluctuates with weather conditions, making supply unpredictable.

On April 28, for example, due to extreme temperature variations, about 55 million people in Spain and Portugal — two countries that source about 80 percent of their electricity from solar and wind — suffered severe power outages that disrupted public transportation, and bank and internet services.

So how will Xinjiang respond to volatility and make the power grid more resilient?

The Xinjiang Fukang Pumped Storage Power Station of the State Grid Xinyuan Company addresses the issue by storing surplus energy when demand is low, said Lu Jiangang, deputy director of the engineering department.

The facility is composed of an upstream reservoir, water conveyance system, underground powerhouse system, ground switch station and a downstream reservoir. The elevation difference between the two reservoirs is approximately 400 meters.

"When electricity demand is low, the plant uses surplus power to pump water from a lower reservoir to an upper reservoir, converting electrical energy into stored energy. When demand peaks, water is released back to the lower reservoir through turbines, generating electricity," said Lu.

Yang Hongtao, chairman of the company, said: "Generally, the station pumps water from the downstream reservoir between 9 am and 3 pm, and generates power between midnight and 7 am, achieving about 80 percent round-trip efficiency."

The first of its kind in Northwest China, the power station commenced power generation in November 2023. It has a bidirectional and double regulation capacity of 2.4 million kW. As of May 14, the power station had operated nearly 15,000 hours and generated over 2.1 billion kWh of electricity.

Yang said the project was a breakthrough in providing flexible power regulation for the Xinjiang and Northwest China power grids, significantly advancing the transformation of abundant wind and solar resources into economic benefits. The facility plays a vital role in promoting Xinjiang's development of large-scale integrated energy bases that combine wind, solar, hydro, thermal, and energy storage.

"Compared with other storage methods, it boasts large-scale capacity, an exceptional safety record and a long operational lifespan," Yang added.

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