A pumped-storage hydropower station in Jinyun county, Lishui, Zhejiang province. [Photo provided by State Grid Zhejiang]

Zhejiang province added 21.83 million kilowatts of power capacity in the first 10 months of 2025, with clean energy accounting for nearly 80 percent, according to State Grid Zhejiang Electric Power Co data released on Nov 24.

Hydropower and pumped-storage projects contributed 2.2 million kW of new capacity, bringing hydropower to 7.31 million kW and pumped-storage capacity to 9.88 million kW. Wind power capacity rose to 6.55 million kW, while nuclear power reached 9.2 million kW.

Driven by rapid growth in wind and solar power, new energy now accounts for 40 percent of Zhejiang's total installed capacity and supplies roughly 45 percent of provincial electricity demand during spring and autumn.

Solar remained the dominant driver of this year's expansion. Zhejiang's photovoltaic capacity climbed to 61.83 million kW by the end of October, with 14.56 million kW added this year — two-thirds of all new power capacity. Distributed rooftop solar alone accounts for 51.43 million kW, with a peak output of 31.29 million kW.

Zhejiang also added 5 million kW of high-efficiency, ultra-low-emission coal-fired power, built with units designed to reduce fuel consumption and pollution. The province's coal power capacity reached 57.73 million kW, up 21.8 percent from 2020, strengthening local energy security.