POWER OF ATTORNEY



Know all by these presents, that the undersigned hereby constitutes and appoints each of Gregory

S. Schlicht, Mark Dickey, Danny C. Herron, or any of them signing singly, and with full power of

substitution, the undersigned's true and lawful attorney-in-fact to:



- - execute for and on behalf of the undersigned, in the undersigned's capacity as an officer

and/or director of VERASUN ENERGY CORPORATION (the "Company"), Forms 3, 4, and 5

in accordance with Section 16(a) of the Securities Exchange Act of 1934, as amended, and the

rules thereunder (the "Exchange Act");

- - 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 U.S. Securities and

Exchange Commission and any stock exchange or similar authority; and

- - 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-fact's 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 undersigned's responsibilities to comply with Section 16 of the

Exchange Act.



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 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 1st day of April, 2008.





/s/ Steven T. Kirby_____

Name: Steven T. Kirby

Title: Director

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