eng Science and Education Publishing International Transaction of Electrical and Computer Engineers System 2373-1281 2019-04-14 6 1 19 24 10.12691/iteces-6-1-3 ITECES2019613 article V. V. Thang thangvvhtd@tnut.edu.vn 1 Thanh-Tung Ha 2 Department of Electric Power Systems, Thainguyen University of Technology (TNUT), Vietnam School of Electric Power, South China University of Technology, Guangzhou, China Energy Hub is known as a new solution to reduce energy costs of the consumers using multiple energies. Therefore, this paper introduces a structure model of Energy Hub in residential areas where energy demands include electrical, heat and cold because of major changes of environmental temperature in different periods of the year. The mathematical models optimizing energy cost of Energy Hubs are presented with an objective function and constraints. Theof Energy Hub is valuated by comparing with a traditional energy supply structure. The calculation program is performed by General Algebraic Modeling System (GAMS). The efficiency and capability of the proposed model are illustrated by numerical results. http://pubs.sciepub.com/iteces/6/1/3/iteces-6-1-3.pdf energy hub optimization energy cost residential area GAMS