Number: R40103 Title: Carbon Control in the U.S. Electricity Sector: Key Implementation Uncertainties Authors: Paul W. Parfomak, Specialist in Energy and Infrastructure Policy Abstract: This report examines key uncertainties associated with the CO2 emissions abatement measures identified in Figure 1. The report describes each measure and discusses expectations for its potential in the context of past experience, technical challenges, infrastructure requirements, or other factors which may inform performance expectations. For each measure, it identifies and discusses a critical uncertainty which may influence its overall viability. The report concludes with a discussion of the implications of these uncertainties in the context of the congressional carbon control debate. Pages: 22 Date: December 23, 2008