| Company name | Reg. code |
|---|---|
| ENERGYON OÜ kustutatud | 11975495 |
| AL ENERGION OÜ | 11379928 |
| ENERGYSYN OÜ kustutatud | 12658510 |
| ENERGRIN OÜ | 16951938 |
| ENERGYFY OÜ | 14995908 |
| ENERGEN OÜ | 12953509 |
| ENERGIO OÜ | 12678210 |
| ENERGYS OÜ | 17187787 |
| ENERGO OÜ | 16434781 |
| ENERGYSYN GROUP OÜ kustutatud | 12756602 |
| ALTER ENERGY OÜ | 16960274 |
| ENERGY CONSULT OÜ | 10883331 |
| CPO ENERGY OÜ | 16516496 |
| ENERGO MANAGEMENT OÜ | 10647599 |
| EMERALD ENERGY OÜ | 12171936 |
| ENERGY FINDER OÜ kustutatud | 12429955 |
| VAV ENERGY OÜ kustutatud | 12717424 |
| ENERGY PORT OÜ | 14785192 |
| ZZ ENERGY OÜ | 12301280 |
| PHH ENERGY OÜ kustutatud | 10907758 |
| ASTEL ENERGY OÜ (former name Asteltech Energy OÜ) | 17055525 |
| PETROBUSINESS ENERGY OÜ (former name DEPLU TRADE OÜ) | 16680474 |
| LAAN ENERGY OÜ kustutatud | 12213072 |
| ARS ENERGY OÜ kustutatud | 11509497 |
| ENERGY COAL OÜ kustutatud | 11976632 |
| PROTEIN ENERGY OÜ | 16578907 |
| FIREWIND ENERGY OÜ kustutatud (former name iPeak International OÜ) | 12062236 |
| AGRO ENERGO OÜ | 14951331 |
| APP ENERGY OÜ | 14618502 |
| ARTSOL ENERGY OÜ | 14751365 |
| ALTARE ENERGY OÜ kustutatud | 12102792 |
| TRILINI ENERGY OÜ kustutatud | 12817232 |
| SOLID ENERGY OÜ kustutatud | 12651932 |
| RN ENERGY OÜ | 14474523 |
| ENERGY CREATORS OÜ | 14772597 |
| ZAVE ENERGY OÜ kustutatud | 16247412 |
| US ENERGY OÜ kustutatud | 12019447 |
| CW ENERGY OÜ (former name Coal-Wood Energy OÜ) | 14241279 |
| S-ENERGO OÜ kustutatud | 16622117 |
| ENERGY LIFE OÜ | 12202460 |
| F-ENERGY OÜ kustutatud | 12822658 |
| RAMAVA ENERGY OÜ | 12907294 |
| VIRU ENERGO OÜ (former name NRG HoldCo 2 OÜ) | 17164378 |
| SONCE ENERGY OÜ | 14856762 |
| KAAMOS ENERGY OÜ (former name Kaamos Trading OÜ) | 11695726 |
| HIMBALT ENERGY OÜ (former name Nordic Capital Consultancy OÜ) | 14237208 |
| POSA ENERGY OÜ kustutatud | 14916139 |
| NOVATOR ENERGY OÜ | 12603152 |
| LPG ENERGY OÜ | 16796188 |
| FINAL ENERGY OÜ | 14521949 |