The paper reports the results of a new generalized price-augmented Working-based (Tran Van Hoa and Reece, 1989) six-equation model of energy consumption in Thailand for the period 1974–1987, and provides improved 2SHI (Tran Van Hoa, 1986) forecasts for six petroleum products for the period 1991–2000. The forecasts are particularly useful in complete fuel-cycle greenhouse-gas emission approaches (e.g. Wilson, 1990) to study the impact of energy consumption on the environment.