TY - EJOU AU - Wang, Xiuyun AU - Zhang, Zipeng AU - Liu, Chuang AU - Bian, Guoliang TI - Analysis of Renewable Energy Absorption and Economic Feasibility in Multi-Energy Complementary Systems under Spot Market Conditions T2 - Energy Engineering PY - 2025 VL - 122 IS - 2 SN - 1546-0118 AB - As the power system transitions to a new green and low-carbon paradigm, the penetration of renewable energy in China’s power system is gradually increasing. However, the variability and uncertainty of renewable energy output limit its profitability in the electricity market and hinder its market-based integration. This paper first constructs a wind-solar-thermal multi-energy complementary system, analyzes its external game relationships, and develops a bi-level market optimization model. Then, it considers the contribution levels of internal participants to establish a comprehensive internal distribution evaluation index system. Finally, simulation studies using the IEEE 30-bus system demonstrate that the multi-energy complementary system stabilizes nodal outputs, enhances the profitability of market participants, and promotes the market-based integration of renewable energy. KW - Multi-energy complementary systems; spot market; two-layer optimization; new energy consumption DO - 10.32604/ee.2024.056748