Licensing of nuclear systems, structures and components (SSCs) is a core area of Holtec International’s corporate competence. The Company secures at least five new licenses or license amendments each year from regulatory authorities around the world. The table below lists the national regulators in different countries with whom Holtec has broad and long term licensing nexus:
| Country | Regulator |
| Belgium | FANC (Brussels) Bel V(Brussels) |
| Brazil | CNEN (Rio de Janeiro) |
| China | NNSA (Beijing) |
| Canada | CNSC (Ottawa) |
| Korea | KINS (Taejon) |
| Mexico | CNSNS (Mexico City) |
| Slovenia | SNSA (Ljubljana) |
| South Africa | NNR (Centurion) |
| Spain | CSN (Madrid) |
| Sweden | SSM (Stockholm) |
| Switzerland | ENSI (Baden) |
| Taiwan | AEC (Taipei) |
| Ukraine | SNRIU (Kiev) |
| UK | ONR (London) |
| USA | NRC (Washington, DC) |