Integrated Energy System Planning Optimization Considering Equipment Performance Haifeng Li, Lufeng Chen, Gang Feng, Yongli Wang, Yang Ma, Lu Xue, Yuze Ma and Chengyuan Qi E3S Web Conf., 185 (2020) 01066 Published online: 01 September 2020 DOI: 10.1051/e3sconf/202018501066