In this study, Turkey's energy sector was overviewed during the period of 1970-2002. The total energy consumption (TEC) was modeled by using the economic growth (proxied by gross national product-GNP) and population increase, which are the two important factors to determine the energy consumption for developing countries. In addition, the relationship between the TEC and total CO2 (TCO2) emission was studied. For this purpose, regression analysis was performed and the strong relationship between TEC and TCO2 (R-2 = 0.998) was modeled. Also, results showed that a regression model can be used to predict the TEC from the country population and the GNP with high confidence (R-2 = 0.996).