SPECIAL POWER OF ATTORNEY



The undersigned, Teresa J. Tanner, hereby constitutes and appoints
Ronald E. Christian, or,in his absence, Robert E. Heidorn, as the
undersigned?s true and lawful attorney-in-fact and agent, with full
power of substitution and re-substitution for the undersigned and
in the undersigned?s name, place and stead, in any and all capacities,
to sign any Form 3--Initial Statement of Beneficial Ownership of
Securities, Form 4--Statement of Changes in Beneficial Ownership
of Securities, and Form 5--Annual Statement of Beneficial Ownership
of Securities required to be filed by the undersigned with respect
to the undersigned?s beneficial ownership of securities of Vectren
Corporation (Company), and to file the same, with all exhibits,
with the Securities and Exchange Commission (SEC) and any national
market exchange on which the Company?s securities are listed, granting
unto said attorney-in-fact and agent full power and authority to do and
perform each and every act and requisite necessary to be done, as fully
for all intents and purposes as such person might or could do in person,
hereby ratifying and confirming all that said attorney-in-fact and agent,
or a substitute(s), may lawfully do or cause to be done by virtue hereof.

This Power of Attorney shall remain in full force and effect until
the undersigned is no longer required to file Forms 3, 4, and 5 with respect
to the undersigned?s holdings of and transactions in securities of the
Company, unless earlier revoked by the undersignedin a signed writing
delivered to the foregoing attorneys-in-fact.  This Power of Attorney
may be filed with the SEC as a confirming statement of the authority
granted herein.

Executed by the undersigned as of this 3rd day of September, 2015.




							     Teresa J. Tanner
							        Signature



STATE OF      Ohio	          )
			          )  SS:
COUNTY OF  Hamilton               )

Before me the undersigned, a Notary Public for Hamilton County,
State of Ohio, personally appeared Teresa J. Tanner, and
acknowledged the execution of this instrument this 3rd day of September, 2015.


							    Diane Jackson
							    Notary Signed:

My commission expires: 4-14-2017

G:\Corporate\Legal\Vectren\Board\Directors\Degraffenreidt\POA.doc