Optimal Allocation Strategy for Rural Integrated Energy Systems with Biogas Co-combustion Combined Heat and Power under a Carbon Emission Reduction Context

Focusing on issues such as the low utilization of biomass energy resources in rural areas and environmental pollution caused by traditional heating methods, this study proposes a rural multi-energy supply model centered on biogas co-combustion combined heat and power (BCHP) generation, aligned with carbon emission reduction goals. By analyzing the characteristics of rural resource endowment and comparing potential of various biomass energy resources with their utilization approaches, we establish an optimized configuration model for rural integrated energy systems. The model aims to minimize total costs, including energy consumption, investment, operation and maintenance, and carbon emission expenses. Through a case study of a township in northern China, the efficacy of the proposed configuration model is validated. Results demonstrate that the configured strategy reduces system carbon emissions by approximately 76.97% while maintaining economic feasibility.