On September 9, Fan Ka, an employee of State Grid Zhejiang Haining Power Supply Company, visited the 20kV Fenghuang Converter Station within the “Source–Grid–Load–Storage Integrated Demonstration Zone” in Jianshan, Haining, and opened the source–grid–load–storage coordinated control system to review the real‑time updated source–grid–load–storage coordination control data. Since the system went live, on the basis of 100% full consumption, the local consumption rate of photovoltaic power generation within the distribution network has increased by more than 8 percentage points compared to when the system was first launched, and the peak–valley load difference at the 110kV Jianshan Substation has decreased by more than 1 percentage point…

　　The Source–Grid–Load–Storage Coordination and Control System was constructed by State Grid Zhejiang Electric Power Co., Ltd. and officially went live on June 30. Within the demonstration zone, which covers an area of 42 square kilometers, there are government agencies, public buildings, converter stations, and more than 150 large-scale enterprises. By building this system, Zhejiang Electric Power has unified the coordinated control of 15 types of resources across the source–grid–load–storage spectrum—namely distributed power sources, distribution network equipment, interruptible loads, adjustable loads, smart buildings, and energy storage power stations—creating a highly resilient power grid in which vast amounts of resources are awakened and full‑scale interaction among all four sides of the grid is achieved. After just over a month of operation, system data show that the upgraded source–grid–load–storage interaction within the demonstration zone is already beginning to yield tangible results.

　　On May 26, Jianshan Xinneng Microgrid Technology Co., Ltd. integrated its newly commissioned, trial‑operating source–grid–load–storage coordinated control system. This system functions like a brain, precisely and efficiently coordinating the “four limbs” of source, grid, load, and storage. Without requiring manual intervention, the system’s algorithms help photovoltaic power generation deliver real‑time, stable voltage output. Qiu Hualin, the company’s head of electrical engineering, said: “The most immediate impression is that the voltage is more stable, and power quality has improved significantly. The yield of good products has increased by nearly 5 percentage points.” In fact, this seemingly simple numerical improvement means that with less raw material and energy, companies can produce more high‑quality products—reflecting a development trend toward low energy consumption and high output value. This also demonstrates how source–grid–load–storage interaction promotes efficient energy utilization.

　　This year, Zhejiang Electric Power has strengthened demand-side management, encouraging customers to participate in maintaining the order of power supply and consumption and enhancing the level of flexible interaction between customers and the power grid, with more than 40,000 customers taking part in demand response.

　　From 3:00 PM to 4:00 PM on July 12, Hangzhou Nanshan Cement Co., Ltd. participated in power demand response, achieving a controllable load response of 1,520 kilowatts by adjusting production lines and temporarily halting mixer operations. According to Hu Ziqiang, Deputy General Manager of the company: “We adjust our response load based on actual production conditions. This year, we’ve responded seven times, saving 18,200 kilowatt-hours of electricity and receiving approximately 70,000 yuan in subsidies.”

　　By unlocking dormant resources, Zhejiang Electric Power has also developed “virtual power plants.” In Lishui and other regions, leveraging the abundant advantages of small hydropower stations within the area, the company has brought together more than 1,000 small-scale renewable energy power stations—ranging from wind, solar, and hydro—together with millions of distributed load customers. This approach transforms vast, uncoordinated resources into a structured, controllable pool, effectively creating a “super‑sized battery” capable of delivering zero‑carbon electricity in response to grid demand. (Chen Lisha, Chen Junhua, Zhang Lei)