TX_1~AT/TX_2~AT International Journal of Energy Economics and Policy | Vol 8 • Issue 4 • 2018 13 International Journal of Energy Economics and Policy ISSN: 2146-4553 available at http: www.econjournals.com International Journal of Energy Economics and Policy, 2018, 8(4), 13-20. Study of Fuel Oil Supply and Consumption in Indonesia Akhmad1*, Amir2 1Faculty of Economics and Business, University of Muhammadiyah, Makassar, Indonesia, 2Faculty of Economics and Business, University of Muhammadiyah, Makassar, Indonesia. *Email: akhmad09@yahoo.co.id ABSTRACT The consumption of fuel oil (BBM) in Indonesia for the last 10 years is increasing along with the increase in economic growth and the number of population. The increase in fuel oil consumption is not accompanied with the increase in domestic oil production. The research aimed to find out factors influencing fuel oil supply and consumption and forecasting the supply and consumption in Indonesia in the future. The research used time series data for 1997-2016. The research used econometrics model with simultaneous equation system. The model of simultaneous equation system built was consisted of 11 structural equations and 2 identic equations. The result of analysis indicated that factors influencing the supply of fuel oil were world oil price and the supply of oil in the previous year. In addition, factors influencing the consumption of fuel oil were fuel oil price and fuel oil consumption in the previous year. The result of forecasting indicates that fuel oil consumption in Indonesia up to 2025 is increasing in average of 4.07% for gasoline, 2.99% for kerosene, and 3.19% for diesel per year. In addition, the price of fuel oil in Indonesia was estimated to increase in average of 3.76% for gasoline, 3.87% for kerosene, and 3.19% for diesel, whereas, import of fuel oil increased in average of 4.83% per year. Keywords: Time Series, Simultaneous Equations, Supply and Consumption of Fuel Oil JEL Classifications: C32, Q4, Q47 1. INTRODUCTION The consumption of energy in Indonesia for the last 10 years indicates an increase in average of 7-8% per year along with the increase in population and better economic growth. The condition requires better energy availability to support the economic activities and social dynamics of the society. However, there are various challenges and obstacles to fulfill the need of energy, among others, crude oil production that tends to increase while the acceleration in renewable new energy development that is expected to become the new backbone of national energy is not maximal. The condition causes Indonesia to be vulnerable to global energy market since some of the consumption, especially petroleum products, are fulfilled through import (the Ministry of Energy and Mineral Resources, 2016). Indonesia as an archipelago state and has a large number of population needs high movement/transportation. Transportation sector service is the most important basic need for the society to support the fulfillment of the basic needs, such as clothing, food, and house. The role of transportation is closely related to the need of energy, 90% of the energy is in form of fuel oil (BBM). National Energy Board (2016) stated that the consumption of fuel oil in transportation sector in Indonesia tends to grow by 8.6% per year, higher than the household consumption of 3.7%, power plants of 4.6% and smaller than the growth in industrial consumption of 9.1%. The reserve of fossil-based fuel oil, which is the non-renewable resource, is very limited of 4.7 billion barrel. The reserve is sufficient for consumption for 15 years if no new oil wells found through exploration and no energy diversification conducted. Consumption of fuel oil energy for transportation sector is dominated by road transportation, which is 88% of total fuel oil consumption in transportation sector, particularly diesel and gasoline. Along with the increase in the number of motor vehicles, better quality fuel oil is needed both fossil-based and renewable non-fossil based fuel, which is biofuel or environmentally friendly bioenergy. The growth of transportation sector is estimated to be high in the future. The number of vehicles is increasing every year (6-8%), especially motor bike and car as well as the growth of travel, especially travel by private vehicles causing the high rate Akhmad and Amir: Study of Fuel Oil Supply and Consumption in Indonesia International Journal of Energy Economics and Policy | Vol 8 • Issue 4 • 201814 of growth in fuel oil demand (the Secretary of National Energy Board, 2016). With the diminishing reserve of fossil energy and the increase in energy consumption, it threatens the economic development of Indonesia. Therefore, various efforts need to be conducted to encourage the use of efficient energies along with an intensive search of new fossil energy resources and the development of renewable alternative energy resources (Elinur, 2010). The main cause of inefficiency in energy utilization is cheap energy policy by the government of Indonesia. Tambunan (2006) stated that cheap energy policy through large subsidies has negative impacts. First, the high dependency on crude oil energy resources. Low price is disincentives for energy diversification as well as conservation effort (Elinur, 2012). Second, fuel oil subsidy in APBN (state budget) threatens the fiscal sustainability of the government (Akhmad, 2014). Third, the less optimum of other energy resources utilization, such as natural gas and coal that have larger reserve than crude oil or new and renewable energies (Kuncahyo et al., 2013). Fourth, the rampant of fuel oil smuggling abroad causing higher demand level than the actual need. Fifth, the rampant of mixing fuel oil activity that harm the state and general consumers. Sixth, price signal distorts investment feasibility in the downstream sectors of oil and gas. Other indicators indicating the waste in energy utilization in Indonesia is energy intensity. Energy intensity is a comparison between the amount of energy consumption to PDB (gross domestic product) per capita. The more efficient a country is, the smaller its intensity. To date, energy subsidies applied by the government causes energy waste since the use is less optimal. It is reflected in the relatively high energy intensity, which is 482 TOE (ton-oil-equivalent) per a million USD. It means, to produce a value added (gross domestic product) of USD 1 million, Indonesia would need energy of 482 TOE. Meanwhile, Malaysia only need 439 TOE/million USD and the average intensity of 100 energy of developed countries joined in the Organization for Economic Co-operation and Development (OECD) is only 164 TOE/million USD. It indicates a large potential of energy savings in Indonesia (Bureau of Statistics, 2015). Factors influencing fuel oil consumption are: The length of road (Xiao et al., 2007), the number of vehicles (Kenworthy and Laube, 2002; Fwa, 2005), the behavior of road users (Directorate General of Land Transportation, 2008), vehicle speed (Caroline, 2007; Nanang et al., 2008; Rodrigue, 2004; Taylor and Linsay, 2004), and type of machine (Taylor and Linsay, 2004). In addition, fuel oil consumption is also influenced by the number of population, land use, and population density (Kenworthy and Laube, 2002; Verameth et al., 2007). Hassan et al. (2018) found that industrial growth in Sub-Saharan Africa is highly depended on the supply of energy thus policies on energy preservation effort give negative impact on industrial growth. Fuel oil availability issue for Indonesia is very important to fulfill the need of the society and to improve economic growth. Therefore, government needs to maintain balance between economic growth and the availability of fuel oil as one of requirements to achieve developed and sustainable economic development. Thus, it is interesting to conduct a study to analyze the supply and consumption of fuel oil in Indonesia. Therefore, the research aimed to find out factors influencing the supply and consumption of BBM in Indonesia and forecast the supply and consumption of BBM in Indonesia in the future. 2. DATA AND RESEARCH METHOD The research used time series data in the period of 1997-2016. Data used consisted of data of fuel oil supply, fuel oil price, fuel oil consumption and government revenue and expenditures. Data was obtained from Bureau of Statistics, the Ministry of Energy and Mineral Resources, the Ministry of Finance, and Central Bank of Indonesia. The research used econometrics model with simultaneous equation system. The model of simultaneous equation system built consisted of 13 equations where 11 equations were structural equations and 2 equations were identity equations. The model was divided into four blocks, namely: (1) Block of fuel oil supply, (2) block of fuel oil price, (3) block of fuel oil consumption, and (4) block of government revenue and expenditures. 2.1. Block of BBM Supply Equation 2.1.1. Domestic fuel oil production Domestic fuel oil production was influenced by the world oil price, increase in crude oil input for oil refineries, the capacity of oil refineries, and the domestic fuel oil production in the previous year. The equation of domestic fuel oil production was formulated as follows: BBMDt = a0+a1POILWt+a2TIMTt+a3KKMt+a4LPBBMDt-1+U1 (1) The sign of expected estimated parameter: a1, a2, a3 >0 and 0<a4<1. 2.1.2. Import of fuel oil Import of fuel oil was influenced by the final consumption of fuel oil, the number of land transportation, the domestic fuel oil production, Rupiah exchange rate, and import of fuel oil in the previous year. The equation of import of fuel oil was formulated as follows: IBBMt = b0+b1 CBBMt+b2JTDIt+b3 PBBMDt+b4NTRPt +b5LIBBMt-1+U2 (2) The sign of expected estimated parameter: b1, b2, >0; b3,b4<0 and 0<b5<1. 2.1.3. Fuel oil supply Fuel oil supply is the domestic fuel oil production added with import of fuel oil and subtracted by export of fuel oil. The formula of fuel oil supply as follows: YBBMt = PBBMDt+IBBMt−XBBMt (3) Akhmad and Amir: Study of Fuel Oil Supply and Consumption in Indonesia International Journal of Energy Economics and Policy | Vol 8 • Issue 4 • 2018 15 2.2. Block of Fuel Oil Price 2.2.1. The equation of domestic crude oil price The price of domestic crude oil was influenced by the final consumption of fuel oil, fuel oil supply, government expenditure for fuel oil subsidies, world crude oil price, and domestic crude oil price in the previous year. The equation of domestic crude oil price is formulated as follows: R P B B M T t = c 0 + c 1 C B B M t + c 2 Y B B M t + c 3 G S B B M t +c4POILWt+c5LRPBBMTt-1+U3 (4) The sign of expected estimated parameter: c1, c4>0; c2, c3<0, and 0<c5<1. 2.2.2. The equation of gasoline price The price of gasoline was influenced by gasoline consumption, fuel oil supply, government expenditure for fuel oil subsidies, world crude oil price, and price of gasoline in the previous year. The equation of gasoline price is formulated as follows: RPBENt = d0+d1CBENt+d2YBBMt+d3GSBBMt+d4POILWt+d5 LRPBENt-1+U4 (5) The sign of expected estimated parameter: d1, d4>0; d2, d3<0, and 0<d5<1. 2.2.3. The equation of kerosene price Kerosene price was influenced by kerosene consumption, fuel oil supply, government expenditure for fuel oil subsidies, world crude oil price, and kerosene price in the previous year. The equation of kerosene price is formulated as follows: RPMTt = e0+e1CMTt+e2YBBMt+e3GSBBMt+e4POILWt+e5LRP MTt-1+U5 (6) The sign of expected estimated parameter: e1, e4>0; e2, e3<0, and 0<e5<1. 2.2.4. The equation of solar oil price Solar oil price was influenced by the consumption of solar oil, fuel oilsupply, government expenditure for fuel oil subsidies, world crude oil price, and solar oil price in the previous year. The equation of solar oil price is formulated as follows: RPDSt = f0+f1CDSt+f2YBBMt+f3GSBBMt+f4LPOILWt+f5LRP DSt-1+U6 (7) The sign of expected estimated parameter: f1, f4>0; f2, f3<0, and 0<f5<1. 2.3. Block of BBM Consumption Equation 2.3.1. Gasoline consumption Gasoline consumption was influenced by gasoline price, gross domestic product, fuel oil supply and gasoline consumption in the previous year. The equation of gasoline consumption is formulated as follows: CBENt = g0+g1RPBENt+g2PDBt+g3YBBMt+g4LCBENt-1+U7 (8) The sign of expected estimated parameter: g1<0; g2, g3>0 and 0<g4<1. 2.3.2. Kerosene consumption Kerosene consumption was influenced by kerosene price, gross domestic product, fuel oil supply, and kerosene consumption in the previous year. The equation of kerosene consumption is formulated as follows: CMTt = n0+h1RPMTt+h2PDBt+h3YBBMt+h4LCMTt-1+U8 (9) The sign of expected estimated parameter: h1<0; h2, h3>0 and 0<h4<1. 2.3.3. Solar oil consumption Solar oil consumption was influenced by solar oil price, gross domestic product, fuel oil supply, and solar oil consumption in the previous year. The equation of solar consumption is formulated as follows: CDSt = i0+i1RPDSt+i2PDBt+i3YBBMt+i4LCDSt-1+U9 (10) The sign of expected estimated parameter: i1<0; i2, i3>and 0<i4<1. 2.4. Block of Government Revenues and Expenditures 2.4.1. Government revenues Government revenue was influenced by domestic fuel oil production, import of fuel oil, tax, government revenues in the previous year. The equation of government revenue is formulated as follows: TRGt = j0+j1PBBMDt+j2TIBBMt+j3TAXt+j4LTRGt+U10 (11) The sign of expected estimated parameter: j1, j2, j3>0 dan 0<j4 1. 2.4.2. Government expenditures The equation of government expenditure was formed in identity equation. The equation of government expenditure was the sum of non-subsidy government expenditure added with government expenditure for fuel oil subsidies and government expenditure of non-subsidy fuel oil, and it is formulated as follows: TGEt = GNSt+GSBBMt+GSNBBMt (12) 2.4.3. Expenditure of fuel oil subsidies Expenditure of fuel oil subsidies was influenced by government revenue, Rupiah exchange rate against the USD in the previous year, final consumption of fuel oil and expenditure of fuel oil subsidies in the previous year. The equation of expenditure of BBM subsidy is formulated as follows: GSBBMt = k0+k1TGEt+k2LNTRPt-1+k3CBBMt+k4LGSBBMt-1+U11 (13) The sign of expected estimated parameter: k1, k3>0; k2<0 dan 0<k4<1. Akhmad and Amir: Study of Fuel Oil Supply and Consumption in Indonesia International Journal of Energy Economics and Policy | Vol 8 • Issue 4 • 201816 2.5. Identification of Model and Model Estimation Method The model of fuel oil supply and consumption in Indonesia developed in the research was a simultaneous equation model where the behavior of its variable was determined simultaneously. The identification of model was determined based on order condition as a requirement of necessity and rank condition as a requirement of sufficiency. According to Koutsoyiannis (1977), Juanda (2009), the formulation of identification of structural equation model based on order condition is determined by: (K−M)>(G−1) (14) Where: K: Total variables in the model, which is endogenous and pre- determined variables M: The number of endogenous and exogenous variables included in one certain equation in a model. G: Total equation in a model, which is the number of endogenous variables in a model. Based on the order condition, if: (K-M)>(G-1): The equation is stated as over identified (K-M)=(G-1): The equation is stated as exactly identified (K-M)<(G-1): The equation is stated as unidentified. The result of identification for each structural equation should be exactly identified or over identified. Therefore, due to the simultaneity the parameter estimators with ordinary least square method were inconsistent and bias thus alternative estimation method was needed (Juanda, 2009). In this research, model estimation method used was 2SLS (two stage least square) since the method is suitable for over identified simultaneous equation and it could be used in a relatively small number of sample and it is insensitive to model modification (re-specification), both for structural analysis and simulation and forecasting analysis. Data processing was conducted using computer software program of SAS Version 9.1. 2.6. Model Simulation and Forecasting After model was validated and fulfilled the statistic criteria, the model could be used as a basic model of simulation and forecasting. Some scenarios of simulation to be conducted in the study were: (1) An increase in world oil price by 10%, (2) a decrease in fuel oil subsidy expenditures by 20%, (3) the combination of an increase in world oil price by 10% and a decrease in BBM subsidy expenditure by 20%. Method used in the forecasting was stepwise auto-regression (STEPAR) method, which is the combination of time trend model and auto-regressive model. Stepwise auto-regression method is a forecasting method that firstly conducts forecasting on exogenous variables using linear trend. After the values of exogenous variables are obtained, forecasting on the development of endogenous variables was conducted using energy consumption and supply model in Indonesia economy that has been built. 3. RESEARCH RESULTS Model specification used in the research had been modified several times since there were found several estimation results that inconsistent to the theory and several parameter estimations that insignificant. In the end, a model was obtained with result performance of parameter estimation that was representative to describe the phenomenon of fuel oil supply and consumption in Indonesia. Model estimation using 2SLS (two stage least square) method resulted factors influencing the endogenous variables in the model, where there were 11 structural equations from 4 blocks and it showed good result as a whole. 3.1. Result of Estimation of Fuel Oil Supply Model The result of model estimation of fuel oil production (Table 1) indicates that: World oil price had negative and significant influence on domestic fuel oil production. It indicates that if world oil price increases the domestic fuel oil production will decrease. In addition, the fuel oil production in the previous year had positive and significant influence on domestic fuel oil production. Variable of the addition of crude oil input for refineries and the capacity of oil refineries had positive but insignificant influence. The value of elasticity of domestic fuel oil production on world oil price was 0.1859. It means that the domestic fuel oil production is irresponsive to world oil price. If world oil price increases by 1% the domestic fuel oil production will decrease by 0.1859%, ceteris paribus. The result of model estimation on import of fuel oil obtained that fuel oil consumption and import of fuel oil in the previous year had positive and significant influence on import of fuel oil. Meanwhile, domestic fuel oil production and Rupiah exchange rate against USD had negative and significant influence on import of fuel oil. The elasticity of fuel oil consumption to import of fuel oil was 0.2120. It means that the import of fuel oil was irresponsive to fuel oil consumption. If the consumption of fuel oil increases by 1% the import of fuel oil will increase by 0.2120%. The elasticity of fuel oil production and Rupiah exchange rate to import of fuel oil was −0.3413 and −0.3019, respectively. It means that fuel oil production and Rupiah exchange rate were irresponsive to import of fuel oil. If fuel oil production and Rupiah exchange rate in the previous year increases by 1% the import of fuel oil will decrease by 0.3413% and 0.3019%, respectively. 3.2. Result of Estimation of Fuel Oil Price Model The result of model estimation on domestic crude oil price obtained that: Domestic crude oil price was positively and significantly influenced by fuel oil subsidies, world crude oil price and domestic crude oil price in the previous year, whereas fuel oil consumption and fuel oil supply had positive but insignificant influence. The result of elasticity calculation indicates that all variables were irresponsive to domestic crude oil price. The result of model estimation on gasoline price obtained that domestic gasoline price was negatively and significantly influenced by supply of fuel oil and positively and significantly influenced by government fuel oil subsidies and gasoline price Akhmad and Amir: Study of Fuel Oil Supply and Consumption in Indonesia International Journal of Energy Economics and Policy | Vol 8 • Issue 4 • 2018 17 in the previous year, whereas world oil price had positive but insignificant influence. Moreover, final consumption of fuel oil had negative but insignificant influence. The result of elasticity calculation indicates that all variables were irresponsive to domestic gasoline price. The result of model estimation on kerosene price obtained that domestic kerosene price was positively and significantly influenced by kerosene price in the previous year; whereas world oil price and fuel oil subsidies had positive but insignificant influence. In addition, final consumption of kerosene and supply of fuel oil had positive but insignificant influence. The result of elasticity calculation indicates that all variables were irresponsive to domestic kerosene price (Table 2). The result of model estimation on diesel price obtained that domestic diesel price was positively and significantly influenced by diesel price in the previous year. Whereas, government fuel oil subsidies had negative and significant influence. In addition, world oil price had positive but insignificant influence. Further, final consumption of diesel and supply of fuel oil had negative but insignificant influence. The result of elasticity calculation indicates that all variables were irresponsive to domestic diesel price. 3.3. Result of Estimation of Fuel Oil Consumption Model Result of model estimation on gasoline consumption obtained that gasoline consumption was positively and significantly influenced by gasoline consumption in the previous year and negatively and significantly influenced by gasoline price. In addition, gross domestic product, supply of fuel oil had positive but insignificant Table 1: Results of estimation equation of fuel oil supply 1. Equation of domestic fuel production (PBBMD) Variables Estimates P>(T) Elasticity Variable name F value R2 Intercept 271074.5 0.0251 - Intercept 32.09 0.8004 POILW −343.5142 0.0345 −0.1859 World oil prices TIMT 0.045999 0.4917 0.4143 Increase in crude oil inputs for refineries KKM 1.697810 0.3011 0.3730 Refinery capacity LPBBMD 0.451925 <0.0001 - Domestic fuel production the previous year 2. Equation of import of fuel oil (IBBM) Intercept −50506.71 0.2206 - Intercept 99.11 0.8770 CBBM 0.320033 0.1120 0.2120 Final consumption of fuel oil JTDI 0.24649 0.0304 0.2706 Number of land transportation PBBMD −0.54619 0.0304 −0.3413 Domestic fuel production NTRP −0.012028 0.5815 −0.3019 Rupiah exchange rate against USD LIBBM 0.831304 <0.0001 - Import of fuel oil the previous year Table 2: Estimation results of fuel oil price 1. The equation of domestic crude oil price (RPBBMT) Variables Estimates P>(T) Elasticity Variable name F value R2 Intercept 63894.889 0.6038 - Intercept 832.09 0.9604 CBBM −0.075999 0.7917 −0.1143 Fuel oil consumption YBBM −0.697810 0.4211 −0.1430 Supply of fuel oil GSBBM −0.547832 0.0211 −0.3142 Government expenditure on fuel subsidies POILW 0.604110 0.0111 0.4941 World oil prices LRPBBMT 0.151925 0.0232 - The price of domestic crude oil the previous year 2. Gasoline price equations (RPBEN) Intercept −12506.19 0.4406 - Intercept 68.45 0.7964 CBEN −0.432033 0.6220 −0.1120 Consumption of gasoline YBBM −0.134649 0.0304 −0.3206 Supply of fuel oil GSBBM −0.326649 0.0211 −0.3201 Government expenditure on fuel subsidies POILW 0.432028 0.9815 0.1309 World oil prices LRPBEN 0.831304 <0.0001 - Gasoline consumption the previous year 3. The equalization of kerosene price (RPMT) Intercept 950619.7 0.2206 - Intercept 55.43 0.7775 CMT −0.241033 0.7321 −0.0132 Kerosene consumption YBBM −0.186641 0.4404 −0.2706 Supply of fuel oil GSBBM −0.124321 0.2132 −0.1231 Government expenditure on fuel subsidies POILW 0.000028 0.3215 0.2214 World oil prices LRPMT 0.442301 <.0001 - Kerosene price of previous year 4. Solar oil price equation (RPDS) Intercept 66506.99 0.2206 - Intercept 31.54 0.6978 CDS −0.773044 0.7120 −0.0220 Consumption of diesel oil YBBM −0.996649 0.1704 −0.1806 Supply of fuel oil GSBBM −0.543650 0.0121 −0.3214 Government expenditure on fuel subsidies POILW 0.000028 0.2015 0.0019 World oil prices LRPDS 0.831304 <0.0001 - Diesel oil prices the previous year Akhmad and Amir: Study of Fuel Oil Supply and Consumption in Indonesia International Journal of Energy Economics and Policy | Vol 8 • Issue 4 • 201818 influence. The result of elasticity calculation indicates that all variables were irresponsive to domestic gasoline consumption (Table 3). The result of model estimation on kerosene consumption obtained that kerosene consumption was positively and significantly influenced by kerosene consumption in the previous year, whereas, gross domestic product, supply of fuel oil had positive but insignificant influence. In addition, kerosene price had negative but insignificant influence. The result of elasticity calculation indicates that all variables were irresponsive to domestic kerosene consumption. The result of model estimation on diesel consumption obtained that diesel consumption was positively and significantly influenced by diesel consumption in the previous year and significantly and negatively influenced by diesel price. In addition, gross domestic product and supply of fuel oil had positive but insignificant influence. The result of elasticity calculation indicates that all variables were irresponsive to domestic diesel consumption. 3.4. Result of Estimation of Government Revenue and Expenditure Model The result of model estimation on government revenue parameters obtained that government revenue was positively and significantly influenced by total tax and government revenue in the previous year. Whereas, fuel oil production and total import of fuel oil had positive but insignificant influence on government revenue. The result of elasticity calculation indicates that all variables were irresponsive to government revenue (Table 4). The result of model estimation on government fuel oil subsidies obtained that government fuel oil subsidies was positively and significantly influenced by government expenditures on fuel subsidies in the previous year. Whereas, total government expenditures, Rupiah exchange rate in the previous year and fuel oil consumption had positive but insignificant influence on government fuel subsidies. The result of elasticity calculation indicates that all variables were irresponsive to government fuel subsidies. 3.5. Policy Simulation Policies applied by the government as well as the changes in external factors occurred could bring positive and negative impacts Table 3: Estimation results of oil fuel consumption 1. Gasoline consumption equation (CBEN) Variables Estimates P>(T) Elasticity Variable name F value R2 Intercept −65434.86 0.0238 - Intercept 111.09 0.8324 RPBEN −0.324388 0.0017 0.1414 The price of gasoline PDB 0.986710 0.2211 0.1733 Gross domestic product YBBM 0.321340 0.3214 0.2132 Supply of fuel oil LCBEN 0.851925 <0.0001 - Gasoline consumption the previous year 2. Kerosene consumption equation (CMT) Intercept 28894.88 0.0908 - Intercept 13.09 0.5904 RPMT 0.332421 0.7917 0.0143 The price of kerosene PDB 0.123010 0.4021 0.1420 Gross domestic product YBBM 0.231431 0.2132 0.3212 Supply of fuel oil LCMT 0.851925 <0.0001 - Kerosene consumption the previous year 3. Solar oil consumption equation (CDS) Intercept 804321,82 0.1038 - Intercept 79.09 0.8804 RPDS 0.321229 0.0417 0.0143 Price of diesel oil PDB 0.543211 0.3211 0.1730 Gross domestic product YBBM 0.321321 0.2101 0.2311 Supply of fuel oil LCDS 0.851925 <0.0001 - Diesel fuel consumption the previous year Table 4: Result of estimated government revenue and expenditure 1. Government revenue equation (TRG) Variables Estimates P>(T) Elasticity Variable name f value R2 Intercept 8544.88 0.4532 - Intercept 17.09 0.6604 PBBMD 0.321432 0.3917 0.2143 Domestic fuel production TIBBM 0.327810 0.3221 0.1730 Total imports of fuel oil TAX 2.043221 0.0213 0.0221 Tax LTRG 0.432543 <0.0001 - Government revenue the previous year 2. Spending equation fuel subsidies alone government (GSBBM) Intercept 72194.93 0.1038 - Intercept 244.54 0.8704 TGE 0.231210 0.7917 0.0143 Total government expenditures LNTRPt−1 0.321431 0.1611 0.1921 Rupiah exchange rate against USD previous year CBBM 0.123212 0.1205 0.1120 Oil fuel consumption LGSBBM 0.851925 <0.0001 - Government expenditure on fuel subsidy the previous year Akhmad and Amir: Study of Fuel Oil Supply and Consumption in Indonesia International Journal of Energy Economics and Policy | Vol 8 • Issue 4 • 2018 19 on every endogenous variables included in a simultaneous equation system. Therefore, simulation conducted in the research consisted of: (1) A decrease in the fuel oil subsidies by 20%; (2) an increase in world oil price by 10%; and (3) the combination of a decrease in fuel oil subsidies by 20% and an increase in world oil price by 10%. The result of simulation is displayed in Table 5. The result of the first simulation indicates that if the government decreases the fuel subsidies by 20%, the price of gasoline, kerosene and diesel would increase above 2%, in average, whereas the consumption of gasoline, kerosene, and diesel decreases by 0.02%, in average. Further, the result of the second simulation indicates that if the world oil price increases by 10%, the price of gasoline, kerosene and diesel increases by 0.5%, in average, whereas, domestic fuel oil consumption only decreases by 0.02%. Further, the result of the third simulation, which was the combination of a decrease in fuel oil subsidies by 20% and an increase in world oil price by 10%, causes the price of gasoline, diesel, and kerosene increases by 2.5%, in average, whereas consumption of gasoline, diesel, and kerosene decreases by 0.03%. 3.6. Forecasting Fuel Oil Consumption and Supply in Indonesia for Period of 2018-2025 Forecasting fuel oil consumption, supply and price in Indonesia economy needed to be conducted to obtain an illustration about the future condition thus it can be used in economic-energy planning and development in Indonesia. Forecasting was conducted from 2018 to 2025. The limit of forecasting in 2025 was referred to the Blue Print of Energy Development in Indonesia that has been set up to 2025. The result of forecasting indicates that fuel oil consumption in Indonesia up to 2025 will increase by 3.91%, 2.99%, and 3.81% per year, for gasoline, kerosene, and diesel, respectively. Moreover, the price of fuel oil in Indonesia was estimated to increase by 2.45%, 1.58%, and 2.09% per year for gasoline, kerosene and diesel, respectively. Whereas, import of fuel oil increases by 5.49%, in average (Table 6). 4. CONCLUSION AND POLICY IMPLICATIONS The result of model estimation obtained that factors influencing the supply of fuel oil were world oil price and fuel oil supply in the previous year. Factors influencing the price of fuel oil were fuel oil consumption and world oil price. Whereas, factors influencing fuel oil consumption were fuel oil price and fuel oil consumption in the previous year. The result of simulation indicates that if the government increases the fuel oil subsidies by 20%, the price of gasoline, kerosene Table 5: The result of simulation Variables Basic value Change (%) Simulation 1 Simulation 2 Simulation 3 Domestic fuel production 3085605,4 0,001 0,005 0,005 Import of fuel oil 1262374,2 −0,003 −0.095 0,096 Supply of fuel oil 3245981,15 −0,016 −0,005 −0,018 Domestic crude oil price 239580,6 0,303 0,589 0,696 Gasoline price 60762,21 2,068 0,561 2,403 Kerosene price 14354,21 2,301 0,504 2,505 Price of diesel oil 27424,23 2,409 0,604 2,724 Gasoline consumption 4311867,55 −0,021 −0,018 −0,034 Consumption of kerosene 562027,8 −0,026 −0,014 −0,034 Consumption of diesel oil 249839,35 −0,021 −0,025 −0,039 Government revenue 9636651,3 −0,228 −0,103 −0,313 Government expenditures 7809321,73 −0,204 1,102 −1,202 Expenditure subsidies on fuel oil 1169541,21 −20,00 0,127 −20,00 Table 6: Results of forecasting pricing and consumption of Indonesian fuel Variables name Unit 2018 2025 Growth (%) Domestic fuel production Thousand barrels 266.237,87 273.235,73 0,38 Import of fuel oil Thousand barrels 225.735,58 322.546,03 5,49 Supply of fuel oil Thousand barrels 491.973,45 595.781,76 3,01 Domestic crude oil Price Rupiah./barrels 266.719,40 336.732,32 3,75 Gasoline price Rupiah/barrels 989.278,75 1.159.278,90 2,45 Kerosene price Rupiah./barrels 859.260,90 954.460,75 1,58 Price of solar oil Rp./barrels 957.260,40 1.097.268,55 2,09 Gasoline consumption Thousand barrels 401.867,55 511.888,50 3,91 Consumption of kerosene Thousand barrels 62.027,80 75.027,80 2,99 Consumption of solar oil Thousand barrels 149.839,35 189.839,75 3,81 Government revenue Billion rupiah 956.366,30 1.004.566,50 0,72 Government expenditures Billion rupiah 977.366,20 1.017.367,40 0,58 Expenditure subsidies on fuel oil Billion rupiah 369.541,21 377.540,35 0,31 Akhmad and Amir: Study of Fuel Oil Supply and Consumption in Indonesia International Journal of Energy Economics and Policy | Vol 8 • Issue 4 • 201820 and diesel increases above 2%, whereas the consumption of gasoline, kerosene and diesel decreases about 0.02%, in average. Further, the result of simulation indicates that if the price of world oil price increases by 10%, the price of gasoline, kerosene and diesel increases by 0.5%, in average, whereas the domestic fuel oil consumption decreases by 0.02%. The result of the third simulation, which was the combination of a decrease in fuel oil subsidies by 20% and an increase in world oil price by 10%, caused the price of gasoline, diesel, and kerosene increases by 2.5%, in average, whereas consumption of gasoline, diesel, and kerosene decreases by 0.03%. The result of forecasting indicates that fuel oil consumption in Indonesia up to 2025 increases by 4.07%, 2.99%, and 3.19% per year, for gasoline, kerosene, and diesel, respectively. Moreover, the price of fuel oil in Indonesia was estimated to increase by 3.76%, 3.87%, and 3.19% per year for gasoline, kerosene and diesel, respectively. Whereas, import of fuel oil will increase by 4.83%, in average. 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