| Company name | Reg. code |
|---|---|
| EAT4HEALTH OÜ | 16891998 |
| OILWORLD OÜ (former name SW Heat OÜ) | 14714246 |
| OPTIRAK EESTI OÜ (former name Heat and Light OÜ) | 11036946 |
| VENTUS ELECTRICITY AND HEAT JUGLA OÜ (former name VENTUS Electricity and Heat 1 OÜ) | 17012252 |
| VENTUS ELECTRICITY AND HEAT OÜ (former name VENTUS Electricity and Heat Atlasa OÜ) | 17180236 |