Exhibit 10.1.6
 
AMENDMENT & CONSENT
 
June 2, 2008
 
Union Bank of California, N.A.,
acting as Administrative Agent
445 South Figueroa Street, 15th Floor
Los Angeles, CA 90071
Attn:  Susan Johnson

Dear Susan:
 
Reference is made to the $300,000,000 Credit Agreement, dated as of August 31,
2005 (as amended, modified or supplemented as of the date hereof, the “Credit
Agreement”), among Aquila, Inc. (the “Company”), the banks named therein, and
Union Bank of California, N.A., as Administrative Agent and as Issuing
Bank.  Capitalized terms used but not defined herein have the meanings given to
them in the Credit Agreement.
 
Section 1.                      Background.
 
Pursuant to an Agreement and Plan of Merger dated as of February 6, 2007, by and
among Great Plains Energy Incorporated (“GPE”), the Company, Black Hills
Corporation, and Gregory Acquisition Corp. (the “Merger Agreement”), the Company
has agreed to be acquired by GPE.  The transaction will be consummated by
merging Gregory Acquisition Corp. with and into Company (the “Merger”), with the
Company continuing as the surviving corporation.  Upon completion of the Merger,
the Company will become a wholly-owned subsidiary of GPE.

Immediately prior to closing the Merger, and as a condition precedent to the
completion of the Merger, the Company will sell certain of its utility
properties to Black Hills Corporation for a base purchase price of $940 million
(the “Asset Sale”).  None of the assets to be acquired by Black Hills
Corporation are pledged as, or otherwise constitute, Collateral.  The net cash
proceeds of the Asset Sale will be used, in part, to fund the cash portion of
the consideration to be paid to the Company’s shareholders in the Merger.

In connection with the Merger, and in order to achieve the forecast merger
synergies, GPE will functionally integrate the utility operations of the Company
and Kansas City Power & Light Company, a Missouri corporation and wholly-owned
subsidiary of GPE (“KCPL”).  The Company expects to complete the Asset Sale and
the Merger on or about July 1, 2008, but no later than August 6, 2008.

Section 8.02(c) of the Credit Agreement provides that the Company may not enter
into any merger without the consent of the Required Lenders.  Section
8.02(d)(iii) of the Credit Agreement provides that the Company will use the net
cash proceeds of asset sales for general corporate purposes.  Section 8.02(h) of
the Credit Agreement permits the Company to enter into only certain
 

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types of affiliate transactions.  Section 9.01(k) of the Credit Agreement
provides that, without the consent of the Required Lenders, a Change in Control
constitutes an Event of Default.
 
Section 2.                      Request for Amendments & Consents.
 
Subject to the satisfaction of the conditions set forth in Section 3 below, the
Company requests that, effective as of the completion of the Merger (the
“Effective Date”), the Required Lenders:
 
 
a.
consent to the Merger, including the use of the net cash proceeds of the Asset
Sale to fund, in part, the cash component of the consideration payable to the
Company’s shareholders in connection with the Merger;

 
b.           consent to the Change in Control that will occur upon completion of
the Merger;
 
 
c.
amend the first sentence in Section 7.01(n) of the Credit Agreement by adding
the words “any material amount” between the words “contributes” and “to”;

 
 
d.
amend Section 7.01(o) of the Credit Agreement by deleting the second sentence
thereof; and,

 
 
e.
amend Section 8.02(h) of the Credit Agreement by adding the following language
to the end thereof:

 
“; provided, that the foregoing restrictions will not apply to affiliate
transactions (A) subject to the affiliate transaction rules and regulations of
the MPSC or otherwise authorized by the applicable state or federal regulatory
authorities, or (B) necessary to functionally integrate and operate the utility
operations of the Borrower and Kansas City Power & Light Company”.
 
Section 3.                      Representations and Warranties; Conditions
Precedent.
 
The Company hereby represents and warrants to you that, as of the Effective Date
and after giving effect to the amendments and consents contained in this letter
agreement (this “Amendment & Consent”), each of the representations and
warranties made by the Company in or pursuant to Section 7.01 of the Credit
Agreement (other than the representations and warranties in Section 7.01(b)
thereof) will be true and correct in all material respects as if made on and as
of the Effective Date (except to the extent such representation and warranty
specifically relates to an earlier date, in which case such representation and
warranty will have been true and correct in all material respects on and as of
such earlier date), and no Event of Default will have occurred and be
continuing.  For purposes of this Amendment & Consent, references in Section
7.01 of the Credit Agreement to “this Agreement’, “hereunder”, “hereof” and
words of like import referring to the Credit Agreement will be deemed to be a
reference to this Amendment & Consent and the Credit Agreement, as modified
hereby.
 

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Notwithstanding anything herein, in no event will the amendments and consents
set forth herein become effective unless and until the following condition
precedents have been satisfied: (i) GPE has delivered to the Administrative
Agent a written guarantee (in a form reasonably acceptable to the Administrative
Agent) for the benefit of the Lenders, pursuant to which GPE guarantees the
payment and other obligations of the Company under the Credit Agreement; and
(ii) GPE has paid, or caused to be paid, to the Administrative Agent a fee to be
agreed upon GPE and the Administrative Agent after the date hereof, for the
benefit of the Lenders that timely execute this Amendment & Consent.
 
Section 4. Execution and Delivery.
 
If you agree to the above requests, please evidence such consent by executing
and returning at least four counterparts of this Amendment & Consent to Union
Bank of California, N.A., 445 South Figueroa Street, 15th Floor, Los Angeles,
CA, Attention: Susan K. Johnson (fax no. 213.236.4096) no later than 10 a.m.
(Los Angeles time) on Tuesday, June 10, 2008.
 
Section 5.                      Miscellaneous.
 
The execution, delivery and effectiveness of this Amendment & Consent will not,
except as expressly provided herein, operate as a waiver of any right, power or
remedy of any Lender under the Credit Agreement, nor constitute a waiver of any
other provision of the Credit Agreement.  This Amendment & Consent is subject to
the provisions of Section 11.01 of the Credit Agreement, and will be binding on
the parties hereto and their respective successors and permitted assigns under
the Credit Agreement.
 
This Amendment & Consent may be executed in any number of counterparts and by
any combination of the parties hereto in separate counterparts, each of which
counterparts shall constitute an original and all of which taken together shall
constitute one and the same instrument.  This Amendment & Consent shall be
governed by, and construed in accordance with, the laws of the State of New
York.
 
Very truly yours,

AQUILA, INC.

By: /s/ Michael Cole
Michael Cole
Vice President, Finance and Treasurer

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UNION BANK OF CALIFORNIA, N.A.
as Administrative Agent, Issuing Bank and a Lender

By: /s/ Susan K. Johnson
      Name: Susan K. Johnson
      Title:  Vice President

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ALLIED IRISH BANKS, P.L.C.
as a Lender

By: /s/ Aidan Lanigan
      Name: Aidan Lanigan
      Title:  Vice President

By: /s/ David O’Driscoll
      Name: David O’Driscoll
      Title: Assistant Vice President

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GENERAL ELECTRIC CAPITAL CORPORATION
as a Lender

By: /s/ Randall Hornick
      Name: Randall Hornick
      Title:  Authorized Signatory

By: ________________________________
      Name:
      Title:

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ING CAPITAL LLC
as a Lender

By: /s/ Stephen E. Fischer
      Name: Stephen E. Fischer
      Title: Managing Director

By: /s/ Polina Gerasimova
      Name: Polina Gerasimova
      Title: Associate

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CREDIT INDUSTRIAL ET COMMERCIAL
as a Lender

By: /s/ Mark D. Palin
      Name: Mark D. Palin
      Title: Vice President

By: _________________________
      Name:
      Title:

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CREDIT SUISSE, CAYMAN ISLANDS BRANCH
as a Lender

By: /s/ James Moran
      Name: James Moran
      Title: Managing Director

By: /s/ Nupur Kumar
      Name: Nupur Kumar
      Title: Associate

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ERSTE BANK DER OESTERREICHISSCHEN
SPARKASSEN AG
as a Lender

By: /s/ Bryan J. Lynch
      Name: Bryan J. Lynch
      Title: Managing Director

By: /s/ Patrick W. Kunkel
      Name: Patrick W. Kunkel
      Title: Executive Director

LEHMAN COMMERCIAL PAPER INC.
As a Lender

By: /s/ Randall Braunfeld
      Name: Randall Braunfeld
      Title:  Authorized Signatory

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LANDESBANK HESSEN-THURINGEN
GIROZENTRALE
as a Lender

By: /s/ David A. Leech
      Name: David A. Leech
      Title: Senior Vice President
Corporate Finance Division

By: /s/ Gaelle Waddington
      Name: Gaelle Waddington
      Title: Assistant Vice President
Corporate Finance Department

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HVB GLOBAL ASSETS COMPANY L.P.
as a Lender

By: /s/ Carmen Depaula
      Name: Carmen Depaula
      Title: CPA

By: /s/ Michael Terry
      Name: Michael Terry
      Title: Attorney-in-fact

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THE FOOTHILL GROUP, INC.
as a Lender

By: /s/ Dennis R. Ascher
      Name: Dennis R. Ascher
      Title: Sr. VP

By: ________________________________
      Name:
      Title:

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