The costs with respect to which this election is made will be treated, for the purposes of this section, as if they had actually been paid in the year the plant becomes operational. If a taxpayer makes this election, however, the credit may not exceed one-fourth the amount of tax imposed by this Part for the year reduced by the sum of all credits allowed, except payments of tax by or on behalf of the taxpayer, but any unused portion of the credit may be carried forward for the next 10 taxable years. An election made under this subsection is irrevocable.
If a credit claimed under this section is reduced as provided in this subsection, the Secretary shall notify the taxpayer of the amount of the reduction of the credit on or before December 31 of the year the taxpayer applied for the credit. The amount of the reduction of the credit may be carried forward and claimed for the next 10 taxable years if the taxpayer reapplies for a credit for the amount of the reduction, as provided in subsection (d). In such a reapplication, the costs for which a credit is claimed shall be considered as if they had been paid in the year preceding the reapplication. The Secretary's allocations based on applications filed pursuant to subsection (d) are final and shall not be adjusted to account for credits applied for but not claimed.
N.C. Gen. Stat. § 105-130.25