Model Pengendalian Fluktuasi Harga Gula Pasir dengan Program Stabilisasi dan Sokongan Harga Pemerintah

Abstract

White sugar is an important commodity Indonesia. Sugar’s price fluctuates due to its

availability. The availability is depend on the season of sugar crop. Government has to control

its price to fullfill national price. However, previous experience shows that scarcity of product

availability and fluctuated of price due to unbalanced supply and demand quantity. This paper

proposed a model to control price of white sugar for case of one commodity and multi region.

One time horizon is divided into four periods: (i) beginning of harvesting period, (ii) end of

harvesting period, (iii) beginning of planting period, and (iv) end of planting period. There are

two type of region considered (i) deficit region and (ii) surplus region. A price band is

determined to define maximum and minimum price of white sugar. The government has two

policy options to control the price of white sugar (i) price support program, and (ii) price

stabilization program. This problem is modeled as mathematical programming problem with

objective function is to maximize total benefit of producer, consumer, and government.

Numerical example is provided to illustrate model mechanism for price of white sugar in both

region.