Recently, the official account of State Grid Chengde Power Supply Company announced that it had built the first 100-kW-level "hydropower-PV-ESS" microgrid in northern Hebei in Laowopu Township, Weichang County, Hebei province, leveraging the abundant hydropower and PV resources in the Saihanba area adjacent to the plateau. It is understood that the project integrates a 400-kW hydropower unit and an 800-kW PV system, equipped with a nickel-metal hydride and lithium battery hybrid energy storage system (ESS), and deployed an edge-side energy management system connected to the dispatching system.