Energy is the only studio album by the American ska punk band Operation Ivy. It was originally released only on vinyl and cassette in March 1989 through Lookout! Records (LK 010). It was remastered and re-released on CD by Lookout! Records in 1991 as an eponymous release with an additional 8 tracks from the band's Hectic EP and the Maximumrocknroll double 7-inch compilation Turn It Around!. Energy has been cited as one of the most important albums of the ska punk genre.