This dataset comes from the Energy Information Administration (EIA), and is part of EIA's Annual Energy Outlook report (AEO). The dataset uses billion kilowatthours and is from Table 10: Electricity Trade. The data is broken down Interregional Electricity trade, gross domestic sales, international electricity trade, imports and exports to Canada and Mexico.
AEO 2011 Electricity Trade, archive data download.xls
AEO2011: Electricity Trade - Reference Case, table data in xls format, archived in 2012
AEO 2011: Electricity Trade
EIA's interactive application for AEO 2011 data. Use the download button to get chart or table data in multiple formats.