| Comfort VVS & EL Öland AB CVR 5561518829 | BoardBoard of Directors | Since 2024 | — | Active |
| VENT PROJEKT STOCKHOLM AB CVR 5563485126 | BoardBoard of Directors | Since 2024 | — | Active |
| Temarör i Stockholm Aktiebolag CVR 5564042785 | BoardBoard of Directors | Since 2024 | — | Active |
| BP VVS & EL AB CVR 5564270360 | BoardBoard of Directors | Since 2024 | — | Active |
| Åkeri & Entreprenad i Farsta Aktiebolag CVR 5564603677 | BoardBoard of Directors | Since 2022 | — | Active |
| Nya Söberg & Söderström Rör Aktiebolag CVR 5564624533 | BoardBoard of Directors | Since 2024 | — | Active |
| Windefalk Ventilation & Energi AB CVR 5564921459 | BoardBoard of Directors | Since 2024 | — | Active |
| ATI's El och Energiteknik AB CVR 5565240701 | BoardBoard of Directors | Since 2024 | — | Active |
| REFIS Rör- och Elentreprenörernas friskola i Stockholm AB CVR 5566285994 | BoardBoard of Directors | Since 2025 | — | Active |
| Svenska elbyrån AB CVR 5567269534 | BoardBoard of Directors | Since 2022 | — | Active |
| Rönninge Elkonstruktion AB CVR 5567876122 | BoardBoard of Directors | Since 2020 | — | Dissolved |
| A.S.J. Bygg AB CVR 5569411068 | BoardBoard of Directors | Since 2022 | — | Active |
| RÖRAB Infra AB CVR 5590173372 | BoardBoard of Directors | Since 2024 | — | Active |
| MOMAB AB CVR 5590216825 | BoardBoard of Directors | Since 2020 | — | Dissolved |
| ILR Elmiljö AB CVR 5591136428 | BoardBoard of Directors | Since 2022 | — | Dissolved |
| Santa Pola Holding AB CVR 5593629388 | BoardBoard of Directors | Since 2022 | — | Active |
| Comfort Säkerhet AB CVR 5595723270 | BoardBoard of Directors | Since 2026 | — | Active |
