In 2017, Côte d`Ivoire and Ghana planned to relaunch a buffer storage system for cocoa. Côte d`Ivoire and Ghana control more than 60% of the world`s supply. In 2017, they will face a global surplus of 371,000 tonnes, resulting in lower prices and lower export earnings. The “always normal attic” form of the buffer stock has been introduced to the Middle East since at least biblical times, as can be found in the Old Testament, the reference to such grain granaries. At Genesis, the Egyptians used an increasingly normal attic to stabilize their food market during the seven years of high yield and the next seven years of famine. To maintain the price at TP, the government must purchase excess inventory (Q2-Q1) and store the goods. This reduces supply in the market and keeps actual prices at the target price. Some economists, particularly the Modern Monetary Theory School, support the creation of a stock of unskilled labour in the form of a state-funded employment guarantee. Anyone who was ready, willing and fit for work would be employed at a specified nominal wage. Employment and stabilizing prices of unskilled labour should ensure price stability for the economy as a whole, bring the unemployment rate down to zero in a sustainable way and create an effective minimum wage.  In order to bring prices back to the target price, the government must sell stamp stock products and increase supply to S1. First, we will consider the operation of buffer storage systems that have existed since the 1920s for a number of raw materials such as wheat, tin, rubber, coffee, sugar and cocoa. All of this ultimately failed for one reason or the other, so there are no important examples to consider.
Most buffer storage systems operate in the same rough direction: first, two prices are determined, one floor and one ceiling (minimum and maximum price). If the price drops close to the price of the land (after z.B. has found a new silver-rich vein), the system operator (usually government) will start buying back the stock to ensure that the price does not fall further. Even if the price rises close to the ceiling, the operator lowers the price by selling its stakes. In the meantime, it must either store the goods or keep them away from the market (for example. B by destruction). When a basket is stored, their price stabilization can in turn stabilize the overall price level and prevent inflation. This scenario is shown on the right. Like the wheat market, the price of normal crop years (S1) is within the permitted range and the farmer is not obliged to act. However, during the bumper years (S3), prices began to fall and the government had to buy wheat to avoid the collapse in the price; Similarly, in years of poor harvests (S2), the government must sell its stocks to keep prices low.
The result is a much smaller price drop. [Citation required] Price stability then leads to greater common well-being (the sum of these systems has suffered from some of the same problems that have plagued buffer storage systems, i.e. the problems of maintaining the agreement and switching to alternative goods when prices are kept too high. The bumper harvest has the effect of shifting the feeding curve to S1. The initial result would be that the price falls below the lower limit of OP1. By buying back shares, the Agency is shifting the demand curve to D1 and bringing the price back to OP2 to the upper and lower limits. If there is a very good coffee crop, the supply curve will move to the right and the price would fall below the limit. The operators of buffer stock would then intervene to increase demand, to keep the price within the limit. This is shown in Figure 2 below.
A buffer action uses a price range. Figure 1 shows the effects of setting up a buffer scheme for coffee.