- Advisory Committee of the Environmental Protection Agency
- An Post
- Bord na Móna plc
- Commission for Communications Regulation
- Commission for Regulation of Utilities
- Digital Hub Development Agency
- EirGrid plc
- Electricity Supply Board
- Environmental Protection Agency
- Inland Fisheries Ireland
- Irish National Petroleum Corporation
- Loughs Agency
- Mining Board
- National Oil Reserves Agency
- Sustainable Energy Authority of Ireland