Efficiency criteria as a mechanism for the environmental evaluation of power generation technologies

The potential of using efficiency as a screening criterion for developing future power generation technologies is examined in the context of pending CO₂ limitations. Efficiency measured by CO ₂ per unit of net power available for sale and overall thermal efficiency combined with direct environmental benefits are used to illustrate this concept. The results of this study indicate that improvements in efficiency provide greater environmental benefits than alternative emission reduction measures. However, significant improvements in efficiency may be required if power generation facilities are to meet the Bush administration´s 18 percent proposed reduction in CO₂ intensity by the year 2012