Environmental dispatch of the portuguese power system for CO2 emissions reduction

The present paper uses the concept of the environmental dispatch minimizing the CO 2 emissions associated with the thermal generation of a power system. The environmental dispatch is applied to the Portuguese system and the respective results are compared to the results of a classical economic dispatch. The environmental and economic dispatch results comparison assumes the reference emissions allowances price of 20 euro/ton CO 2 . However, in order to understand the influence of the CO 2 emissions allowances prices on the economic dispatch results, a sensitivity analysis was performed, considering different emissions allowances prices.