Research on capacity-leasing price decision and risk evaluation of shared energy storage considering homogeneous service competition

The capacity-leasing model of shared energy storage (SES) has become a key method for flexibly configuring energy storage, gaining popularity among new energy stations, prosumers, and other stakeholders. However, setting an appropriate price is critical to the development and adoption of SES. Therefore, two methods for equipping energy storage, including self-construction and capacity-leasing, are considered in this paper. A pricing decision model for SES capacity-leasing is constructed in a competitive market composed of SES capacity-leasers and energy storage equipment integrators, utilizing dynamic game theory, and the optimal pricing strategy is derived under market equilibrium conditions. In addition, pricing risks are identified from market and technological perspectives and are quantified using interval number theory. Then, a regional energy storage market is taken as an example to carry out pricing simulation, and the result proves the effectiveness of the proposed model, which can provide decision-making support for SES pricing and investment risk prevention.