An econometric model has been used in a disaggregated approach to study the effect of energy demand for the Manufacturing Sector (1960-1987) and Domestic sector (1970-1987) respectively. The chosen model in each sector exhibits highly statistical significant coefficients for GDP, output, disposable income and energy price determinants. The GDP income elasticity was shown to be prominent in all models. The chosen model for each sector exhibited good predictive ability suggesting that it could be used for forecasting.