Currently, pumped hydro storage is the most mature energy storage system, accounting for over 86% of global installed power storage capacity. With a history of over a century, it is the most widely used and economical large-scale energy storage technology.
Core advantages of pumped hydro storage:
High technological maturity: Widely used in over 40 countries worldwide, with a system cycle efficiency of 70%-85% and a power station lifespan of approximately 100 years.
Large-scale energy storage capacity: Single-station capacity can reach GW levels, suitable for grid-level peak shaving and energy time shifting.
Low cost and long lifespan: Unit investment and operation and maintenance costs are far lower than other forms of energy storage, making it the only physical energy storage technology currently achieving large-scale commercialization.
Despite the rapid development of electrochemical energy storage, pumped hydro storage remains the only mature technology with global support capabilities, continuing to play a crucial role in new power systems.
