- Alpaccess
- Ansaldo Nucleare
- AREN
- AUTOMATICA S.A
- BIS NIMB
- Canadian Nuclear Partners
- CANDU ENERGY
- COMES SA
- ELCOMEX IEA
- Electro Alfa International
- ENERGONUCLEAR
- ENERGOTECH
- GENERAL TURBO
- ICSI – Rm. Valcea
- IMSAT
- Industrial Montaj SRL
- KHNP
- Kinectrics Nuclear Romania
- MARSH SRL
- MATE FIN SRL
- POWERSTATIC SOLUTIONS BUCHAREST
- ROSEAL SA
- SC TIAB SA
- SN “NUCLEARELECTRICA” SA
- TEN Bucureşti
- UNIFY CO LTD SRL
- UTI Group
- Uzinsider General Contractor
- WALTER TOSTO WTB (ex FECNE)
- Adkron Group (Emea)
- ADS Solutions
- ALTIMATE SA
- Boccard Romania SRL
- CERTSIGN SA
- Compania Nationala a Uraniului
- COMPCONTROL
- Concelex
- Constructii Erbasu SA
- Dositracker SRL
- Egis Romania SRL
- Electroproiect SA
- Framatome
- Gonzales Mecanica de precizie
- Konecranes
- Last Energy
- Ludan Engineering
- NuScale Power
- OCA Global
- RATEN
- Rom Weld Concept SRL
- SC Reinvent Energy SRL
- Seimaf Engineering
- Sirbu & Vornicu LAW
- Total Montaj
- Trident Servicii si Mentenanta SA
- UTI Facility Management SA