Abstract:
The objective of this research is to determine the simple or multiple linear regression equation of energy consumption and production, and to analyze the energy efficiency by evaluating the specific energy consumption (SEC) of the designated factories for 4 industry sectors ; wood and furniture (TSIC 33), non-metallic mineral products (TSIC 36), primary metal (TSIC 37) and fabricated metal products, machinery and equipment (TSIC 38). The application of cumulative sum of different (CUSUM) chart is also used to explain the energy consumption behavior and build the target energy consumption equation. The results of this research showed the energy consumption model and SEC of each factories, which can be used as the reference value for the similar production factories to evaluating the energy consumption efficiency. Moreover, the stability of the energy consumption data of the designated factories in primary metal sectors, due to the good energy management. However, there are some factories in non-metallic mineral products and fabricated metal products, machinery and equipment sectors instantly need to develop the energy management. When, the wood and furniture sectors have only one sample so it cant explain overall sector. Lastly, if all of these factories have the energy behavior closely the target energy consumption equation, it can save energy about 3-39%.