SECURITIES AND EXCHANGE COMMISSION Washington, DC 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) May 16, 2005 VECTREN CORPORATION (Exact name of registrant as specified in its charter) Commission Registrant, State of Incorporation, I.R.S Employer File No. Address, and Telephone Number Identification No. ---------- ----------------------------------- ------------------ 1-15467 Vectren Corporation 35-2086905 (An Indiana Corporation) 20 N.W. Fourth Street, Evansville, Indiana 47708 (812) 491-4000 1-16739 Vectren Utility Holdings, Inc. 35-2104850 (An Indiana Corporation) 20 N.W. Fourth Street, Evansville, Indiana 47708 (812) 491-4000 Former name or address, if changed since last report: N/A Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: |_| Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) |_| Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) |_| Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |_| Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Item 8.01 Other Events Vectren Corporation (the Company), an energy holding and applied technology company, announced on Monday, May 16, 2005, that its Indiana utility subsidiary has filed a new multi-emission compliance plan with the Indiana Regulatory Commission. A copy of the press release is attached as Exhibit 99.1 to this Current Report. Vectren Corporation is the parent of Vectren Utility Holdings, Inc. (VUHI). VUHI serves as the intermediate holding company of the Company's three operating public utilities. In connection with the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995, the Company is hereby furnishing cautionary statements identifying important factors that could cause actual results of the Company and its subsidiaries, including Southern Indiana Gas and Electric Company and Indiana Gas Company, Inc. to differ materially from those projected in forward-looking statements of the Company and its subsidiaries made by, or on behalf of, the Company and its subsidiaries. These cautionary statements are attached as Exhibit 99.2. 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 May 18, 2005 By: /s/ M. Susan Hardwick ------------------------------ M. Susan Hardwick Vice President and Controller INDEX TO EXHIBITS The following Exhibits are furnished as part of this Report to the extent described in Item 8.01: Exhibit Number Description -------- ------------ 99.1 Vectren to enhance environmental stewardship through new air quality improvements 99.2 Cautionary Statement for Purposes of the "Safe Harbor" Provisions of the Private Securities Litigation Reform Act of 1995