Previous research attempted to improve the prediction accuracy
of future values by combining linear and non-linear approaches.
Therefore, this study aims to develop an estimation
model for determining the AECB in educational facilities using the
SARIMA model (linear approach) and the ANN model (non-linear
approach). This study was conducted in three steps: (i) establishment
of electricity consumption data for educational facilities;
(ii) estimation of the annual electricity consumption in educational
facilities using the SARIMA model; and (iii) improvement in
prediction accuracy by considering the non-linearity of the residual
from the SARIMA model using the ANN model (refer to
Fig. 1).