The three main objectives of this report—and of the analysis that supports the generation of the MAC curve—are to: (1) present the U.S. EPA’s current forecasts of global high GWP gas emissions from ODSsubstitute sectors through 2020 under a “business-as-usual” scenario that assumes no further actions, apart from normal and expected incremental technological improvements, are taken to reduce emissions; (2) use available cost and technical data to describe those technologies and practices that can reduce these emissions from the major emissions sources analyzed (some of which are expected to be voluntarily adopted by industry); and (3) estimate the costs of reducing high GWP gas emissions for each major source included in this analysis. Forecasts of world emissions are estimated and summarized by region for 2005, 2010, 2015, and 2020. These emissions baselines, when combined with cost, efficiency, and technical data on the specific technologies and practices available to reduce high GWP gas emissions, provide the set of data used to calculate regional, sectoral, and total global MAC curves. Aggregate results of the analysis—conducted by country—are presented (for the purposes of this report) by region in each of the following chapters. The three regions presented include: (1) the United States, (2) non-U.S. Annex I countries (that is, all Annex I countries except for the U.S.), and (3) non-Annex I countries (that is, all countries in the world except for Annex I countries).

• Analysis of Costs to Abate International Emissions of Ozone-Depleting Substance (ODS) Substitute Emissions (PDF)(142 pp, 686 K, 430-R-04-006)
• Appendix (PDF)(167 pp, 1 MB)
• Errata (PDF)(9 pp, 122 K)