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SEC FORM 4 SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940 		 
OMB APPROVAL
OMB Number: 3235-0287
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hours per response: 0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
ZELLER THOMAS J
(Last) (First) (Middle)
PO BOX 1400
(Street)
RAPID CITY SD 57709
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
BLACK HILLS CORP /SD/ [ BKH ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
05/31/2012
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 06/01/2012 I 31.3087 A $31.94 7,367.8977 D
Common Stock 06/01/2012 I 82.222 A $31.94 7,450.1197 D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Phantom Stock Unit (1) 05/31/2012 A 466.128 (2) (3) Common Stock 466.128 $32.18 16,099.9952 I By Trust
Phantom Stock Unit (1) 06/01/2012 A 186.5059 (2) (3) Common Stock 186.5059 $31.94 16,286.5011 I By Trust
Explanation of Responses:
1. 1 for 1 Conversion Ratio.
2. Derivative Security is exercisable upon retirement under terms of the agreement.
3. Derivative Security expires upon retirement under terms of the agreement.
Remarks:
Note: Also see attached Exhibit EX-24 Zeller POA.
Lorna J. Gunderman, by power of attorney 06/04/2012
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
BLACK HILLS CORPORATION
POWER OF ATTORNEY

	Know all by these presents, that the undersigned hereby
constitutes and appoints each of Steven J. Helmers,
Roxann R. Basham, and Lorna J. Gunderman,or either of them
signing singly, and with full power of substitution, the
undersigneds true and lawful attorney in fact to:

1. 	prepare, execute in the undersigneds name and on the
	undersigneds behalf, and submit to the U.S. Securities
	and Exchange Commission the SEC a Form ID, including
	amendments thereto, and any other documents necessary or
	appropriate to obtain codes and passwords enabling the
	undersigned to make electronic filings with the SEC of
	reports required by Section 16 a of the Securities
 	Exchange Act of 1934 or any rule or regulation of the SEC;

2. 	execute for and on behalf of the undersigned, in the
 	undersigneds capacity as an officer and or director of
 	Black Hills Corporation the Company, Forms 3, 4, and 5
 	in accordance with Section 16a of the Securities Exchange
 	Act of 1934 and the rules thereunder;

3. 	do and perform any and all acts for and on behalf of the
	undersigned which may be necessary or desirable to
	complete and execute any such Form 3, 4, or 5, complete
  	and execute any amendment or amendments thereto, and
 	timely file such form with the SEC and any stock exchange
 	or similar authority; and

4. 	take any other action of any type whatsoever in connection
 	with the foregoing which, in the opinion of such attorney
 	in fact, may be of benefit to, in the best interest of, or
 	legally required by, the undersigned, it being understood
   	that the documents executed by such attorney in fact on
 	behalf of the undersigned pursuant to this Power of
 	Attorney shall be in such form and shall contain such
	terms and conditions as such attorney in fact may approve
 	in such attorney in fact's discretion.

       The undersigned hereby grants to each such attorney in
fact full power and authority to do and perform any and every
act and thing whatsoever requisite,necessary, or proper to be
done in the exercise of any of the rights and powers herein
granted, as fully to all intents and purposes as the undersigned
might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all
that such attorney in fact, or such attorney in facts substitute
or substitutes, shall lawfully do or cause to be done by virtue
of this power of attorney and the rights and powers herein
granted.  The undersigned acknowledges that the foregoing
attorneys in fact, in serving in such capacity at the request of
the undersigned, are not assuming, nor is the Company assuming,
any of the undersigneds responsibilities to comply with
Section 16 of the Securities Exchange Act of 1934.

       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 undersigneds holdings of
and transactions in securities issued by the Company,unless
earlier revoked by the undersigned in a signed writing delivered
to the foregoing attorneys in fact.

       IN WITNESS WHEREOF, the undersigned has caused this Power
of Attorney to be executed as of this 23rd day of April, 2012.


	      s Thomas J. Zeller
		Signature

	      Thomas J. Zeller
		Print Name