Forecasting of Electricity Demand in Malaysia with Seasonal Highly Volatile Characteristics using SARIMA–GARCH Model

Zaim, Syarranur and Wan Yusoff, Wan Nur Syahidah and Mohamad, Nurul Najihah and Ahmad Radi, Noor Fadhilah and Yaziz, Siti Roslindar (2023) Forecasting of Electricity Demand in Malaysia with Seasonal Highly Volatile Characteristics using SARIMA–GARCH Model. Matematika, 39 (3). pp. 293-313. ISSN 0127-8274 E-ISSN 0127-9602

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Abstract

Developing an accurate forecasting model for electricity demand plays a vital role in maximising the efficiency of the planning process in the power generation industries. The time series data of electricity demand in Malaysia is highly volatile with seasonal characteristics. This study aims to evaluate the forecasting performance of the seasonal autoregressive integrated moving average (SARIMA) model with GARCH for weekly maximum electricity demand. The weekly maximum electricity demand data (in megawatt, MW) from 2005 to 2016 has been used for this study. The results show that {SARIMA(1,1,0)(0,1,0)}_{52}-GARCH(1,2) with generalized error distribution (GED) is the most appropriate model for forecasting electricity demand due to its parsimonious characteristic with low values of root mean square error (RMSE), mean absolute error (MAE) and mean absolute percentage error (MAPE) which are 644.1828, 523.8380 and 3.13%, respectively. The MAPE value of the proposed model which is less than 5% indicates that the SARIMA - GARCH model is relatively good in forecasting electricity demand for the case of Malaysia data. In conclusion, the proposed model of SARIMA with GARCH has great potential and provides a promising performance in forecasting electricity demand with seasonal highly volatile characteristics.

Item Type:	Article (Journal)
Uncontrolled Keywords:	Forecasting; Electricity Demand; SARIMA; GARCH; Seasonal Highly Volatile Data.
Subjects:	Q Science > QA Mathematics > QA276 Mathematical Statistics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science Kulliyyah of Science > Department of Computational and Theoretical Sciences
Depositing User:	Dr Nurul Najihah Mohamad
Date Deposited:	06 Feb 2025 16:50
Last Modified:	06 Feb 2025 16:50
URI:	http://irep.iium.edu.my/id/eprint/119185

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