| LGLisagallon Group Roscommon, ÉireFuinneamh, Fóntais agus Cóireáil Dramhaíola | Construction work Installation services (except software) Cable Installation Cable Recovery Fibre Optic Installation | |
| EGEirGrid Group Dublin, ÉireFuinneamh, Fóntais agus Cóireáil Dramhaíola | Construction work Installation services (except software) Electricity Transmission System Operator Manage The Flow Of Power Electricity Grid | |
| CCIET Belmullet, ÉireFuinneamh, Fóntais agus Cóireáil Dramhaíola | Construction work Installation services (except software) Power Line Services Utility Infrastructure | |
| GPGannon Properties Dublin, ÉireEastát Réadach | Construction work Real estate services Home Building New Homes Family Homes | |
| GNGrid Network Services – Power Related Infrastructure Athlone, ÉireFuinneamh, Fóntais agus Cóireáil Dramhaíola | Construction work Installation services (except software) | |
| | Construction work Architectural, construction, engineering and inspection services BER Part L Compliance Reports Technical Assessments | |
| JFJohn Flanagan Developments Ltd Tullamore, ÉireEastát Réadach | Construction work Real estate services Real Estate Property Development Construction | |
| PPPlantation Plants Bray, ÉireBainistíocht Saoráidí | Agricultural, farming, fishing, forestry and related products Agricultural, forestry, horticultural, aquacultural and apicultural services | |
| SSuperNode Ltd Dublin, ÉireFuinneamh, Fóntais agus Cóireáil Dramhaíola | Construction work Installation services (except software) Superconducting Cable Systems Superconductors Transmission Technology | |
| FIFuturEnergy Ireland Dublin 2, ÉireFuinneamh, Fóntais agus Cóireáil Dramhaíola | Construction work Installation services (except software) Renewable Energy Wind Energy Onshore Wind | |