Power Load Forecasting Model Based on Grey Neural Network Regression Combination Guozhen Ma, Ning Pang, Zeya Zhang, Yongli Wang, Chen Liu, Suhang Yao and Siyi Tao E3S Web Conf., 213 (2020) 03006 Published online: 01 December 2020 DOI: 10.1051/e3sconf/202021303006