| Company name | Reg. code |
|---|---|
| HOONESTUS OÜ | 17454490 |
| HOONESTUS RAPLA OÜ | 11363183 |
| EVECON KIISA HOONESTUS OÜ (former name Evecon Lüganuse Hoonestus OÜ) | 16104954 |
| EVECON SIKASSAARE HOONESTUS OÜ (former name Evecon Solar 465 OÜ) | 16104977 |
| EVECON TUULEPARK OÜ (former name Evecon Püssi Hoonestus OÜ) | 16104983 |
| HONESTUM OÜ | 12091769 |
| HONESTAS OÜ | 12933062 |
| RING JOONISTUS OÜ | 16031617 |