Capacity Compensation Mechanism Design for Energy Storage Sharing in New Energy Base

Abstract

Shared energy storage plays a crucial role in facilitating the low-carbon transition, serving as a flexible resource to mitigate the volatility of renewable energy. However, the core challenge lies in the lack of an effective cost recovery mechanism, which hampers its economic viability. To address this issue, this paper proposes a capacity compensation mechanism that incorporates market-based revenue streams for shared energy storage. By introducing a capacity degradation factor, the mechanism quantifies the actual capacity support capability of storage systems and dynamically adjusts the compensation unit price and total revenue accordingly. The results indicate that the equivalent capacity of shared energy storage is significantly influenced by discharge duration and energy capacity. Doubling the discharge duration increases the equivalent capacity by approximately 10.5%, while the unit price rises by 16.4¥/(kW·year). Furthermore, the integration of market-based revenues enhances the overall economic feasibility of shared energy storage, stimulates investment, and improves the resource flexibility and operational stability of power systems.