- Alpaccess
- Ansaldo Nucleare
- Arabelle Solutions Romania
- AUTOMATICA
- BIS NIMB
- Canadian Nuclear Partners
- CANDU ENERGY
- COMES
- COMPCONTROL ING
- EGIS ROMANIA
- ELCOMEX IEA
- ENERGONUCLEAR
- ENERGOTECH
- GENERAL TURBO
- GONZALES MECANICA DE PRECIZIE
- Industrial Montaj
- Kinectrics Nuclear Romania
- LUDAN Engineering
- MARSH
- MATE FIN
- ROPOWER NUCLEAR
- ROSEAL
- SN “NUCLEARELECTRICA”
- TEN Bucureşti
- TIAB
- UNIFY CO LTD
- Uzinsider General Contractor
- WALTER TOSTO WTB (ex FECNE)
- Adkron Group (Emea)
- BUREAU VERITAS ROMANIA
- CERTSIGN (UTI Group)
- Concelex
- Constructii Erbasu
- Dositracker
- Electroproiect (UTI Group)
- Framatome
- IMSAT
- INC DTCI- ICSI
- INDUSTEAM EAST EUROPE
- Last Energy
- NuScale Power
- PIPESUPPORT CONSULT
- RATEN
- Rom Weld Concept
- SC Reinvent Energy
- Seimaf Engineering
- Total Montaj
- Trident Servicii si Mentenanta (UTI Group)
- VASTRUM