Variable Rate Note

EXHIBIT 10.2

Variable Rate Note

Note Date:		April 16, 2007		$17,605,870.00
Maturity Date:		April 16, 2012

FOR VALUE RECEIVED, RED TRAIL ENERGY, LLC, a North Dakota limited liability company (“BORROWER”), promises to pay to the order of First National Bank of Omaha (“BANK”), at its principal office or such other address as BANK or holder may designate from time to time, the principal sum of Seventeen Million Six Hundred and Five Thousand Eight Hundred Seventy and 00/100 Dollars ($17,605,870.00), or the amount shown on the BANK’s records to be outstanding, plus interest (calculated on the basis of actual days elapsed in a 360-day year) accruing each day on the unpaid principal balance at the annual interest rates defined below. Absent manifest error, the BANK’s records shall be conclusive evidence of the principal and accrued interest owing hereunder.

This promissory note is executed pursuant to a Construction Loan Agreement between BORROWER and BANK dated as of December 16, 2005, (the Construction Loan Agreement, together with all amendments thereto is called the “AGREEMENT”). All capitalized terms not otherwise defined in this note shall have the meanings provided in the AGREEMENT.

INTEREST ACCRUAL. Interest on the principal amount outstanding shall accrue based on a three month LIBOR RATE plus three hundred forty (340) basis points from time to time until maturity, and at the LIBOR RATE plus six hundred (600) basis points in excess of said aggregate interest rate from time to time after maturity, whether by acceleration or otherwise. Interest shall be calculated on the basis of a 360-day year, counting the actual number of days elapsed.

INCENTIVE PRICING. The interest rate applicable to this promissory note is subject to reduction after a date six months subsequent to CONSTRUCTION COMPLETION DATE, based on the business results of BORROWER. In the event that BORROWER maintains the following ratios, the interest rates will be reduced accordingly:

If INDEBTEDNESS to NET WORTH
is less than:		Interest will be:
1.15: 1.00		3 month LIBOR RATE plus 325 basis points
1.00: 1.00		3 month LIBOR RATE plus 300 basis points
.75 : 1.00		3 month LIBOR RATE plus 275 basis points

REPAYMENT TERMS. Interest and Principal shall be due and payable in the amounts described in the AGREEMENT, which will be applied to this Note and the LONG TERM REVOLVING NOTE, in the manner described in the AGREEMENT. Any remaining principal balance, plus any accrued but unpaid interest, shall be fully due and payable on April 16, 2012.

PREPAYMENT. The BORROWER may prepay this promissory note in full or in part at any time. Provided, however, a condition of any prepayment of all of the FIXED RATE NOTE, VARIABLE RATE NOTE, and LONG TERM REVOLVING NOTE is that certain fees shall be paid to BANK. If such complete prepayment occurs within the first three years following COMPLETION DATE, a fee of one (1%) percent of the amount prepaid shall be paid to BANK.

In addition, if complete or partial prepayment occurs, a fee shall be paid to BANK equal to the amount calculated by the following formula: (Original LIBOR RATE minus current LIBOR RATE) multiplied by the amount prepaid, multiplied by the number of days to the next scheduled interest adjustment day, divided by 360. Any prepayment may be applied in inverse order of maturity or as the BANK in its sole discretion may deem appropriate. Such prepayment shall not excuse the BORROWER from making subsequent payments each quarter until the indebtedness is paid in full. No payment of EXCESS CASH FLOW shall be the cause of a payment to BANK for interest rate breakage fees or otherwise result in any prepayment fee.

ADDITIONAL TERMS AND CONDITIONS. The AGREEMENT, and any amendments or substitutions, contains additional terms and conditions, including default and acceleration provisions, which are incorporated into this promissory note by reference. The BORROWER agrees to pay all costs of collection, including reasonable attorneys fees and legal expenses incurred by the BANK if this promissory note is not paid as provided above. This promissory note shall be governed by the substantive laws of the State of Nebraska.

WAIVER OF PRESENTMENT AND NOTICE OF DISHONOR. BORROWER and any other person who signs, guarantees or endorses this promissory note, to the extent allowed by law, hereby waives presentment, demand for payment, notice of dishonor, protest, and any notice relating to the acceleration of the maturity of this promissory note.

STATE OF NORTH DAKOTA COUNTY OF STARK		) ) )		ss.

On this 11th day of April, 2007, before me, the undersigned, a Notary Public, personally appeared William Price, Vice President of Red Trail Energy, LLC, on behalf of said entity, who executed the foregoing instrument, and acknowledged that he executed the same as his voluntary act and deed and that of the Company.

STATE OF NORTH DAKOTA COUNTY OF STARK		) ) )		ss.

On this 11th day of April, 2007, before me, the undersigned, a Notary Public, personally appeared Ambrose Hoff, President/Chair of Red Trail Energy, LLC, on behalf of said entity, who executed the foregoing instrument, and acknowledged that he executed the same as his voluntary act and deed and that of the Company.