A Flexible Regulation Model for Shared Energy Storage of Multi-Type Building Groups Oriented to Renewable Energy Accommodation

As a core sector of energy consumption and carbon emissions， the green and low-carbon transformation of the construction industry is crucial to achieving the dual carbon goals. However， the intermittency and volatility of renewable energy sources such as photovoltaic （PV） and wind power， coupled with the drawbacks of traditional independent energy storage，including high investment costs， low utilization rates， and insufficient dispatch flexibility，have severely constrained renewable energy accommodation and energy system optimization in the construction field. This study investigated three typical building types： residential， office， and industrial. Based on their heterogeneous energy consumption characteristics， a flexible regulation model for shared energy storage was established， and differentiated dispatch strategies were designed. Case simulations were conducted to compare the operational effects of the three modes： no energy storage， independent energy storage， and shared energy storage. The results indicated that the shared energy storage mode could achieve full utilization of renewable energy， completely resolving the power curtailment issue inherent in the no-energy-storage mode. Compared to the independent energy storage mode， the shared mode significantly reduced energy storage investment costs while maintaining comparable operational costs. Moreover， as the PV installed capacity increased， the capacity reduction rate showed an upward trend， reaching a maximum of over 40%. Meanwhile， through cross-building coordinated dispatch， shared energy storage fully leveraged the advantage of load complementarity， thereby enhancing the stability of the energy system and the efficiency of resource utilization.