This paper expands on a paper written for the Commission on Environmental Cooperation in 2003, titled . That paper explored the important methodological issues related to estimating the net air impacts of new resources in electric power systems.
The paper also reviewed a number of projects in which net emission benefits have been estimated, including projects using power system simulation models and projects not using such models. Over the past year, there has been growing interest in further evaluation of the non-modeling-based methods. The goal of this paper is to lay the groundwork for determining which non-modeling-based method can provide the best estimates of displaced emissions and under what circumstances use of that method would be appropriate.