China has taken a major step forward in advanced energy storage technology with the rollout of its tenth domestically developed 105-megawatt, two-pole synchronous motor-generator—an achievement hailed as a milestone for the country’s clean energy ambitions.
Source: Henan Daily
China has taken a major step forward in advanced energy storage technology with the rollout of its tenth domestically developed 105-megawatt, two-pole synchronous motor-generator—an achievement hailed as a milestone for the country’s clean energy ambitions.
“This marks the maturity and reliability of China’s 100 MW-class dual-mode motor technology, which will become the core of next-generation compressed air energy storage (CAES) power stations,” said Wan Chuangqi, chairman of Wolong Electric Nanyang Explosion-Proof Group, at the company’s factory in Nanyang, Henan Province on May 5.
The latest unit, developed jointly by Wolong Electric and Zhongchu Guoneng (Beijing) Technology Co., Ltd., has passed expert appraisal by the China Machinery Industry Federation. Industry officials say the product closes a longstanding gap in China’s ability to manufacture large-scale electric machines that can both generate and consume power—key for flexible, stable grid support. Until now, this had been considered a critical technical bottleneck.
“This generator has the largest single-unit capacity of its kind in the world,” said Chen Haisheng, Director of the Institute of Engineering Thermophysics at the Chinese Academy of Sciences. “It provides essential equipment for the high-quality development of long-duration, large-scale CAES systems.”
Unlike pumped hydro storage, CAES is not limited by geographic conditions, offering greater flexibility for deployment. The new generator requires 40% less land area per unit compared to earlier models and can reduce annual electricity costs by nearly 2 million yuan. Just as importantly, the construction period for power stations using this technology has been cut from around seven years to just 18 months.
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