1. Introduction
Electric energy is a significant driving force for economic development, while the accuracy of
demand forecasts is an important factor leading to the success of efficiency planning. For this reason,
energy analysts need a guideline to better choose the most appropriate forecasting techniques in order
to provide accurate forecasts of electricity consumption trends. The outcome of the study might be
used by the appropriate national agency in Thailand (e.g., Energy Policy and Planning Office (EPPO),
Ministry of Energy) as a means to develop energy policies as well as measures on energy conservation
and alternative energy. However, there are many techniques that contribute to the prediction of future
electricity demand. In this study, different forecasting techniques were utilized to forecast the
electricity consumption in Thailand and a comparison of these techniques was conducted to choose the
best approach in this situation.