Journal of Economic Modeling Research

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This paper tries to model the electricity demand in Iran’s industrial sector which captures economic factors and also non-economic exogenous factors. The structural time series model (STSM) approach is employed which allows using economic theory and time series flexibility. In this approach the role of UEDT (Underlying Energy Demand Trend) including technological improvement and structural changes is modeled, therefore the income and price elasticity are estimated more accurately. The results show that the UEDT has the stochastic nature. And UEDT has a great impact on industrial energy demand during 1975-2012. So, the electricity has not been used efficiently in this sector. In the short run the estimation of the income and price elasticity are 0.42 and 0.11 respectively. The value of the cross-price elasticity of electricity demand is estimated about 0.06. It shows that natural gas substitute electricity in industrial sector, however it is small.

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Banking system is one the important sectors of economy and as vital institution of money market, plays a very significant role. Also, due to the nature of the banking system performance, the activities of banks have a close relationship with the exchange rate changes. This paper tries to assess the effects of exchange rate variations on macroeconomic variables via the banking system using a macro-econometric model and approach of bounding ARDL during 1973-2017. The results indicated that an increase in the exchange rate through non-performance loans and long-term deposits will led to decreased credit providing by the banking system. On the other hand, an increase in the exchange rate through the net open position and banks’ capital account had a positive impact on banks’ credit provision. However, the negative impact of a change in the non-performance loans and long-term deposits is stronger than the positive impact of the net open position. In addition, the decreasing trend of providing credit by banking system had a negative effect on investment. Finally, an increase in the exchange rate causes a decrease in the long-term deposits and the money multiplier which has a negative effect on liquidity and price level. An increase in the exchange rate through the capacity utilitization rate had a negative impact on GDP. Also an increase in the exchange rate led to increased liquidity and price level.

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Today, the importance of the effectiveness of economic growth on inflation is not hidden from anyone. The literature expresses different views about the effect of inflation on economic growth. Some studies have emphasized the existence of a positive relationship, some studies have emphasized the existence of a negative relationship, and some have considered the effect of inflation on economic growth to be neutral. In recent decades, Iranian economy has faced inflationary conditions that can affect economic growth. Macroeconomics uncertainties can also intensify the negative effect of inflation on economic growth. Considering the importance of the issue, in this article, the vulnerability of economic growth to inflation in the conditions of macroeconomic uncertainties is investigated. For this purpose, using time series data during 1370-1401, the dynamics of the effect of inflation on economic growth has been investigated, using the autoregression method with a distribution with an interval. Since inflation at different levels and thresholds can have a different effect on economic growth, the threshold effect of inflation has been investigated using the threshold regression method. Considering the different effect of inflation in macroeconomic uncertainty, the effect of inflation at the level and threshold on economic growth has been investigated once considering macroeconomic uncertainty and another time without considering macroeconomic uncertainty. E-GARCH method has been used to extract macroeconomic uncertainty. In the models examined in the article, uncertainty of exchange rate, uncertainty of liquidity and uncertainty of stock price index were considered. The findings indicate, inflation at the level without macroeconomic uncertainty has a positive effect on economic growth, but taking macroeconomic uncertainty into account, inflation at the level has a negative effect on economic growth. Also, considering macroeconomic uncertainty indicates that the negative effect of inflation on economic growth is intensified.