SECURITIES AND EXCHANGE COMMISSION


                             Washington, D.C. 20549


                                    FORM 8-K


                                 CURRENT REPORT


                     Pursuant to Section 13 or 15(d) of the


                         Securities Exchange Act of 1934


        Date of Report (Date of earliest event reported): August 7, 2003





                               VECTREN CORPORATION


             (Exact Name of Registrant as Specified in Its Charter)





                                     INDIANA


                 (State or Other Jurisdiction of Incorporation)





                  1-15467                                  35-2086905
          (Commission File Number)             (IRS Employer Identification No.)


                              20 N.W. Fourth Street

                            Evansville, Indiana 47708

               (Address of Principal Executive Offices)(Zip Code)





       Registrant's Telephone Number, Including Area Code: (812) 491-4000




Item 5.   Other Events.

     On August 7, 2003, Vectren Corporation  ("Registrant") and Goldman, Sachs &
Co., as  representative of the several  underwriters  named in Schedule I of the
Underwriting Agreement (collectively, the "Underwriters"), executed that certain
Underwriting  Agreement in  connection  with the sale by the  Registrant  to the
Underwriters of the aggregate  6,500,000 shares of Registrant's common stock and
all or any part of the 975,000 shares of  Registrant's  common stock  (together,
the  "Securities")  subject  to  the  option  described  in  Section  2  of  the
Underwriting Agreement, a copy of which is attached hereto as Exhibit 1.

     Registrant  hereby  files the final  Legal  Opinion of Barnes &  Thornburg,
attached hereto as Exhibit 5 and incorporated herein by reference, in connection
with the issuance of the Securities.



Item 7.   Financial Statements and Exhibits.

          (a)  Exhibits:

               The following exhibits are filed as part of this report:

                  Exhibit 1  - Underwriting Agreement dated as of August 7, 2003

                  Exhibit 5  - Opinion of Barnes & Thornburg




                                   SIGNATURES



     Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.


                                            VECTREN CORPORATION
                                            (Registrant)


Dated:  August 11, 2003                     By: /s/ M. Susan Hardwick
                                                --------------------------------
                                                 M. Susan Hardwick
                                                 Vice President and Controller