| Sustainergy Capital Limited | Private company limited by shares | Live |
| Sustainergy Power Solutions Limited | | Live |
| SUSTAINOMICS GROUP LIMITED | Private company limited by shares | Live |
| AG SustainReport Consulting Limited | Private company limited by shares | Live |
| GREEN SUSTAINS LIMITED | Private company limited by shares | Live |
| SustaInt Limited | Private company limited by shares | Live |
| HK SUSTANO GROUP LIMITED | Private company limited by shares | Live |
| Win Sustenance Limited | Private company limited by shares | Live |
| SUSTENCO HOLDING LIMITED | Private company limited by shares | Dissolved |
| SUSTLIGHT LIMITED | Private company limited by shares | Live |
| SUSTON LIMITED | Private company limited by shares | Dissolved |