Image Source: PixabayOn Jan. 20, 2025, Alliant Energy Corporation (LNT) increased its quarterly dividend by 5.73%, from 48 cents to 50.75 cents per share. The dividend is payable on Feb. 18 to shareholders of record on Jan. 31.Alliant Energy’s contribution to my portfolio’s projected annual dividend income will increase by $26.4 to $487.20.I own 240 shares of the stock at an average cost basis of $49.05 per share. Following this increase, my yield on cost is 4.14% (Alliant Energy Corporation’s forward yield is 3.45% at $58.77 per share). Since opening my position in February 2024, the stock has generated a total return of 23%, including $345.60 in dividend income. That’s an impressive annualized rate of return of 22.8%.More By This Author:Air Products And Chemicals Dividend IncreaseBroadcom Dividend IncreaseMastercard Dividend Increase