In the context of the global transition towards low-carbon energy systems, the article discusses the increasing penetration of distributed generation (DG) across distribution networks (DN) worldwide, leading to complex operational risks. To address these challenges, the focus is on enhancing the spatiotemporal regulation capabilities of DN. The article emphasizes the role of an electricity‑hydrogen hybrid energy storage system in achieving both short-term and long-term power/energy regulation in DN's temporal dimension. Additionally, Spatially Optimized Power (SOP) is highlighted for its ability to enable cross-regional resource coordination in the spatial dimension. However, challenges exist in the operational mechanisms and control strategies of existing systems, requiring the development of a collaborative architecture for SOP and electricity‑hydrogen energy storage to ensure safe and efficient DN operation. The need for fine-grained multi-timescale regulation capabilities in hybrid energy storage systems is emphasized, along with the importance of integrating long-term regulation resources for multiscale spatiotemporal coordination in ultra-high DG penetration regions. The article also touches upon the limitations of current hybrid storage frameworks, especially in responding flexibly to multi-timescale energy dynamics. It underlines the necessity to develop coordinated dispatch strategies and integrate long-term regulation resources to effectively manage complex energy fluctuations across different timescales. Overall, the focus is on proposing efficient solutions to enhance the overall regulation ability of distribution networks in the face of increasing DG penetration levels.