N.C. Gen. Stat. § 143-215.121
The applicant for a permit or a permit holder for a wind energy facility shall establish financial assurance that will ensure that sufficient funds are available for decommissioning of the facility and reclamation of the property to its condition prior to commencement of activities on the site, even if the applicant or permit holder becomes insolvent or ceases to reside in, be incorporated, do business, or maintain assets in the State. To establish sufficient availability of funds under this section, the applicant for a permit or a permit holder for a wind energy facility may use insurance, financial tests, third-party guarantees by persons who can pass the financial test, guarantees by corporate parents who can pass the financial test, irrevocable letters of credit, trusts, surety bonds, or any other financial device, or any combination of the foregoing, shown to provide protection equivalent to the financial protection that would be provided by insurance if insurance were the only mechanism used.
N.C. Gen. Stat. § 143-215.121