MADISON, Wis.–(BUSINESS WIRE)–Alliant Energy Corporation (NASDAQ: LNT) today announced U.S. generally accepted accounting principles (GAAP) and non-GAAP consolidated unaudited earnings per share (EPS) for 2023 and 2022 as follows:   GAAP EPS   Non-GAAP EPS     2023       2022       2023       2022   Utilities and Corporate Services $ 2.86     $ 2.74     $ 2.86     $ 2.76   American Transmission Company (ATC) Holdings   0.14       0.12       0.14       0.14   Non-utility and Parent   (0.22 )