N.D. Cent. Code § 57-38-30.6
A taxpayer is entitled to a credit against tax liability determined under section 57-38-30 in the amount of ten percent per year for five years of the taxpayer's direct costs incurred after December 31, 2002, to adapt or add equipment to retrofit an existing facility or construction of a new facility in this state for the purpose of producing or blending diesel fuel containing at least two percent biodiesel fuel or green diesel fuel by volume or of the taxpayer's direct costs incurred after December 31, 2008, to adapt or add equipment to retrofit an existing facility or construction of a new facility in this state for the purpose of producing crushed soybeans or canola. For purposes of this section, "biodiesel" and "green diesel" mean fuel as defined in section 57-43.2-01. The credit under this section may not exceed the taxpayer's liability as determined under this chapter for the taxable year and each year's credit amount may be carried forward for up to five taxable years. A taxpayer is limited to two hundred fifty thousand dollars in the cumulative amount of credits under this section for all taxable years. A taxpayer may not claim a credit under this section for any taxable year before the taxable year in which the facility begins production or blending of diesel fuel containing at least two percent biodiesel fuel or green diesel fuel by volume or begins crushing soybeans or canola, but eligible costs incurred before the taxable year production, blending, or crushing begins may be claimed for purposes of the credit under this section for taxable years on or after the taxable year production, blending, or crushing begins.
N.D.C.C. § 57-38-30.6