The generalized electric power system（GEPS） consists of the electric power physical system governed by electricity laws， the electric power market system governed by market laws and electric power industrial chain system governed by economic laws. The interpretative structure model of the GEPS contains 26 elements distributed in 13 layers and what is known as its“supply-demand-price”（SDP） structure connects the foundational socioeconomic elements. Each of the important elements has its unique functional chain， viz. the natural calamity and accident chain， the environment protection situation and policy chain， the economic development and economic cycle chain and social and economic management system chain. Located at the intersection of these chains and capable of effectively promoting the system functions， the element“electric power technological progress” will not spontaneously occur but asks for the coordination among the elements upstream.