O. C. Abiahu

Forecasting Renewable Energy Shares Using ARIMA and a Grey-Box Model: Evidence from Four Developed and Developing Economies

Hycinth C. Iwu, D. C. Bartholomew, O. C. Abiahu & K. T. Onyeawugosi · Journal of Energy Research and Reviews · 2026

This study evaluates ARIMA and hybrid Grey-Box models for forecasting the share of renewable energy in total final energy consumption in Angola, Canada, France, and Nigeria. Annual World Bank data from 1990 to 2021 were analysed using exploratory analysis, stationarity testing, a...