| 1 | OX2 AB | Stockholm | 270 st |
| 2 | Nuvia NORDIC AB | Norrköping | 250 st |
| 3 | Bengt Dahlgren Stockholm Aktiebolag | Stockholm | 161 st |
| 4 | NEKTAB, Nordisk Elkraftteknik AB | Arvika | 150 st |
| 5 | Bengt Dahlgren Göteborg AB | Mölndal | 141 st |
| 6 | FVB Sverige AB | Västerås | 139 st |
| 7 | Systeminstallation i Varberg AB | Varberg | 116 st |
| 8 | Incoord InstallationsCoordinator Aktiebolag | Danderyd | 103 st |
| 9 | Calluna AB | Linköping | 96 st |
| 10 | Aenigma AB | Stockholm | 88 st |
| 11 | 1KOMMA5 grader AB | Stockholm | 81 st |
| 12 | Ecogain Aktiebolag | Umeå | 75 st |
| 13 | Power Factors AB | Göteborg | 73 st |
| 14 | INTEC Dalarna AB | Borlänge | 69 st |
| 14 | INTEC Mitt AB | Örebro | 69 st |
| 16 | Soltech Energy Solutions 1988 AB | Jönköping | 63 st |
| 17 | Keyvent Öst AB | Mönsterås | 56 st |
| 18 | Kiona Sweden AB | Stockholm | 55 st |
| 18 | Power Heat Piping South AB | Malmö | 55 st |
| 20 | AFRY Management Consulting AB | Stockholm | 54 st |
| 21 | Pelagia Nature & Environment AB | Umeå | 53 st |
| 22 | Ingenjörsbyrån Andersson & Hultmark Aktiebolag | Göteborg | 50 st |
| 23 | Nytorps Rör Aktiebolag | Stockholm | 49 st |
| 23 | KTC Control AB | Göteborg | 49 st |
| 23 | erelko AB | Helsingborg | 49 st |
| 26 | Alstra Energy AB | Stockholm | 48 st |
| 27 | Acetec AB | Älvsbyn | 46 st |
| 28 | Värmex AB | Stockholm | 45 st |
| 29 | WiseGate Consulting AB | Malmö | 44 st |
| 30 | Bengt Dahlgren Syd AB | Malmö | 42 st |
| 30 | RIBA Aktiebolag | Stockholm | 42 st |
| 32 | Greencon energi & miljö AB | Gävle | 41 st |
| 32 | Sandbäckens Rör i Landskrona / Helsingborg AB | Linköping | 41 st |
| 34 | One Nordic Konsult AB | Malmö | 40 st |
| 34 | Neko Health AB | Stockholm | 40 st |
| 36 | AirSon Engineering AB | Ängelholm | 39 st |
| 37 | VVSteknik Spol & Relining Sverige AB | Falun | 38 st |
| 38 | CREACON Halmstads Konsultaktiebolag | Halmstad | 37 st |
| 38 | Ferla Energy AB | Stockholm | 37 st |
| 38 | Geosyntec Consultants AB | Stockholm | 37 st |
| 41 | Wikström Installationskonsult AB | Göteborg | 36 st |
| 41 | Jernforsen Energy AB | Halmstad | 36 st |
| 41 | Myrspoven AB | Stockholm | 36 st |
| 44 | Atrax Energi och Miljö Aktiebolag | Stockholm | 35 st |
| 44 | GOSOL ENERGI AB | Stockholm | 35 st |
| 46 | Svea Solar Utility Development AB | Stockholm | 34 st |
| 47 | Creanova AB | Sollentuna | 33 st |
| 47 | Scandinavian Centriair AB | Partille | 33 st |
| 49 | IRG Rörinspektion AB | Kungsbacka | 32 st |
| 49 | Solarwork Sverige AB | Stockholm | 32 st |