- American Gas Association
- American Public Power Association
- American Water Works Association
- Center for Public Utilities, New Mexico State University
- Common Ground Alliance
- Edison Electric Institute
- Gas Technology Institute
- Institute of Public Utilities - Michigan State University
- NARUC - National Association of Regulatory Utility Commissioners
- NASUCA - National Association of State Utility Consumer Advocates
- NAWC - National Association of Water Companies
- Nationwide Telephone Area Code Map
- North American Electric Reliability Council (NERC)
- NRRI- National Regulatory Research Institute
- SEARUC – Southeastern Association of Regulatory Utility Commissioners
- South Carolina Business One Stop
- South Carolina State Agency Spending Transparency
- South Carolina State Government
- South Carolina Telecommunications and Broadband Association
- United States Telecom Association - USTelecom
- USA.Gov
The Official Web Site of the State of South Carolina
The Vehicle Registration Payment Portal is now live for passenger carriers.