A Stochastic Optimization Approach for an Integrated Energy System with Electricity, Heat, Gas, and Hydrogen Considering Carbon TradingQiang Li, Zhonghao Wang, Bo Jiang, Fuxiang Dong, Jinfu Liu, Peigang Yan and Daren YuEPJ Web Conf., 351 (2026) 01004DOI: https://doi.org/10.1051/epjconf/202635101004