| Company | Website |
| Competition and Consumer Protection Commission (CCPC) | https://www.ccpc.ie/ |
| ESB Networks | https://www.esbnetworks.ie/ |
| Commission for Regulation of Utilities (CRU) | https://www.cru.ie/ |
| Register Gas Installer (RGI) | https://rgi.ie/ |
| Health & Safety Authority (HSA) | https://www.hsa.ie/eng/ |
| National Standards Authority of Ireland (NSAI) | https://www.nsai.ie/ |
| SOLAS (formerly FAS) | https://www.solas.ie/ |
| Quality and Qualifications Ireland (QQI) | https://www.qqi.ie/ |
| NARIC – Ireland Foreign Qualifications | NARIC Ireland Foreign Qualifications – QSearch |
| Sustainable Energy Authority of Ireland (SEAI) | https://www.seai.ie/ |
