Core Viewpoint - The Hebei Fengning Pumped Storage Power Station, the world's largest in terms of installed capacity, has officially commenced commercial operation, contributing to energy security with green power [1][3]. Group 1: Project Overview - The Fengning Pumped Storage Power Station is located in Fengning Manchu Autonomous County, Chengde City, Hebei Province, with a total installed capacity of 3.6 million kilowatts [3]. - The annual designed power generation capacity is 66.12 billion kilowatt-hours, while the annual water pumping capacity is 87.16 billion kilowatt-hours [3]. - The project holds the world record for total installed capacity, energy storage capacity, underground plant chamber scale, and single underground plant scale, earning it the nickname "the world's largest power bank" [3]. Group 2: Construction and Technology - China Energy Construction Gezhouba Group Co., Ltd. is responsible for key construction tasks including the upper and lower reservoirs, water inlet and outlet, gate wells, and dam [3]. - The project management team has implemented advanced technologies such as digital dam management, rapid quality testing for roller compacted concrete, intelligent digital grouting, and slipform construction techniques [3]. Group 3: Energy Integration and Environmental Impact - The Fengning Pumped Storage Power Station is the first to connect to a 500 kV flexible DC grid, achieving multi-energy complementarity and enhancing the ability to absorb and deliver renewable energy [3]. - Since the first batch of units was put into operation in December 2021, the station has generated a total of 86.16 billion kilowatt-hours and absorbed 109.02 billion kilowatt-hours of renewable energy and off-peak electricity [3]. - Upon full operation, the station is expected to save 480,800 tons of standard coal annually and reduce carbon dioxide emissions by 1.2 million tons, playing a significant role in optimizing energy structure and reducing carbon emissions [3].

Core Insights - The successful grid connection of the 150,000 kW "Photovoltaic+" project by Datang Jilin Shengyuan marks the completion of another large-scale wind-solar-storage integrated project in China [1][3] Group 1: Project Overview - The integrated project is located in the Xiangyang and Erlong townships of Taonan City, Jilin Province, with a total capacity of 1,150,000 kW, including a wind power capacity of 1,000,000 kW from 439 wind turbines that began operation at the end of 2021 [3] - The newly connected photovoltaic project has a capacity of 150,000 kW, consisting of 6,532 monocrystalline silicon solar panels, optimizing energy spatial layout and enabling coordinated development of wind and solar energy [3] Group 2: Environmental Impact - The project is expected to generate an average annual electricity output of approximately 3.6 billion kWh, saving 1.18 million tons of standard coal, and reducing carbon dioxide emissions by 2.92 million tons, sulfur dioxide emissions by 30,000 tons, and nitrogen oxide emissions by 26,500 tons [3] - The project includes a supporting capacity of 7.5 MW/7.5 MWh lithium iron phosphate battery storage system, which consists of three 2.5 MW/2.5 MWh subsystems, addressing the randomness and intermittency of renewable energy generation [3] Group 3: Future Significance - The project will serve as a key power source for Jilin Province's "Land-based Wind-Solar Three Gorges" initiative, supporting the construction of a new energy industrial base in the western region of the province [4] - It aims to provide substantial clean electricity to downstream industrial enterprises, alleviating environmental protection pressures in the local power industry and improving the energy supply-demand structure [4] - The project is significant for promoting the high-quality integration of national energy transition and local revitalization, accelerating the development of a green and low-carbon economy [4]