Time-of-Use (TOU) electricity pricing pro-
vides a new opportunity for industrial user to reduce
their power costs and improve the efficiency of power
energy. Although many methods for Economic Load
Dispatch (ELD) under TOU pricing in continuous pro-
cess industry have been proposed, there is difficulty in
batch-type process industry because of that the power
load units are not fixed but closely related with production planning and scheduling. In this paper, for hot
rolling, a typical batch-type and energy intensive process in steel industry, a multi-objective production scheduling optimization model for ELD is proposed under TOU
pricing, in which the objective is to minimize the power
costs on the premise of ensuring the product quality. A
NSGA-II based production scheduling algorithm is pro-
posed to generate Pareto-optimal solutions, and then
the TOPSIS based multi-criteria decision-making is performed to recommend an optimal solution to facilitate
filed operation. Experimental results on practical production data show that the proposed method cut down
the power costs by creating load units corresponding
to electricity price and shifting loads to avoid on-peak
time periods.