Reducing energy usage in steel industries has a large impact to sustainable society. TMEIC, as an electrical equipment supplier to steel industries, is developing new energy saving solutions for hot strip mill lines in which much energy is consumed. Old equipments have been replaced to more efficient ones such as variable speed AC motors and drives. To earn more savings we propose the intelligent energy control systems which utilize the predictive information of mill process control and predicted material properties such as tensile strength, yield stress. One of the solutions is to control rolled material temperature and thickness draft distribution. Especially material temperature has a large effect to energy usage and material properties. We take an approach to minimize the energy consumption in line under the limitation given by material properties prediction system, MPPS, we have developed. The concept, system configuration, and calculation results of the system will be shown.