S.C. Code Ann. § 58-33-430

Each public utility shall annually furnish a report to the commission and provide to the Office of Regulatory Staff for its review containing a ten-year forecast of loads and resources; provided, however, this section shall not apply to any electric cooperative. The report shall list the major utility facilities which, in the judgment of such utility, will be required to supply system demands during the forecast period. The forecast shall cover the ten-year period next succeeding the date of the report, shall be made available to the public, and furnished upon request to municipalities and government agencies charged with the duty of protecting the environment or of planning land use.