| 1 | ELECTROMONTAJ SA | Bucureşti Sectorul 4 | Bucureşti | 963.0 m | 1,255 |
| 2 | DIGI INFRASTRUCTURA S.R.L. | Bucureşti Sectorul 5 | Bucureşti | 552.7 m | 3,638 |
| 3 | WALDEVAR ENERGY S.R.L. | Municipiul Tulcea | Tulcea | 436.0 m | 1,071 |
| 4 | VANTAGE TOWERS S.R.L. | Bucureşti Sectorul 1 | Bucureşti | 364.0 m | 40 |
| 5 | SIMTEL TEAM S.A. | Bucureşti Sectorul 6 | Bucureşti | 315.0 m | 130 |
| 6 | ENEXUS RENEWABLE S.R.L. | Oraş Voluntari | Ilfov | 246.9 m | 36 |
| 7 | ELECTROCONSTRUCTIA ELECON SA | Municipiul Braşov | Braşov | 188.8 m | 92 |
| 8 | SOCIETATEA FILIALA DE INTRETINERE SI SERVICII ENERGETICE "ELECTRICA SERV" S.A. | Bucureşti Sectorul 1 | Bucureşti | 160.3 m | 423 |
| 9 | SHANGHAI ELECTRIC ROMANIA COMPANY S.R.L. | Bucureşti Sectorul 1 | Bucureşti | 125.0 m | 3 |
| 10 | BUSINESS SERVICE CONSULT INTERNATIONAL S.R.L. | Municipiul Ploieşti | Prahova | 124.6 m | 7 |
| 11 | ELECTROECHIPAMENT INDUSTRIAL SRL | Municipiul Reşiţa | Caraş-Severin | 124.1 m | 227 |
| 12 | PRO CONECT SRL | Municipiul Cluj-Napoca | Cluj | 111.0 m | 289 |
| 13 | EMFOR S.A. | Bucureşti Sectorul 4 | Bucureşti | 108.7 m | 138 |
| 14 | KOREA HYDRO & NUCLEAR POWER CO. LTD GYEONGJU-SI SUCURSALA BUCUREȘTI | Bucureşti Sectorul 2 | Bucureşti | 107.9 m | 64 |
| 15 | OSTENWEG SYSPLAN S.R.L. | Municipiul Mediaş | Sibiu | 84.9 m | 22 |
| 16 | OSTENWEG MOUNTING POWER S.R.L. | Municipiul Mediaş | Sibiu | 79.9 m | 149 |
| 17 | ETHGROUP S.R.L. | Bucureşti Sectorul 6 | Bucureşti | 79.7 m | 118 |
| 18 | ELECTROPRECIZIA A.G. SRL | Municipiul Săcele | Braşov | 72.1 m | 112 |
| 19 | T&D PRO ELECTRIC SRL | Bucureşti Sectorul 1 | Bucureşti | 70.4 m | 51 |
| 20 | ELMONT CONSTRUCT SRL | Municipiul Constanţa | Constanţa | 67.9 m | 78 |
| 21 | ENERGOTECH SA | Bucureşti Sectorul 6 | Bucureşti | 66.5 m | 27 |
| 22 | CAMUSAT ROM-TELECOMUNICATII SRL | Sat Baloteşti, Comuna Baloteşti | Ilfov | 64.5 m | 178 |
| 23 | SOLARPRO S.R.L. | Bucureşti Sectorul 2 | Bucureşti | 64.5 m | 23 |
| 24 | ELECTROCONSTRUCŢIA ELCO TÎRGU JIU SA | Municipiul Târgu Jiu | Gorj | 63.0 m | 53 |
| 25 | SCHRAUBRAM S.R.L. | Loc. Pantelimon, Oraş Pantelimon | Ilfov | 52.1 m | 38 |
| 26 | GRID WORKS S.R.L. | Bucureşti Sectorul 5 | Bucureşti | 51.7 m | 45 |
| 27 | ELECTROCONSTRUCTIA ELCO SA | Municipiul Botoşani | Botoşani | 50.7 m | 101 |
| 28 | INSTAL ITTU SRL | Municipiul Cluj-Napoca | Cluj | 49.8 m | 61 |
| 29 | FIRST CLASS TELECOM INTERNATIONAL SRL | Bucureşti Sectorul 2 | Bucureşti | 48.4 m | 100 |
| 30 | LINIAL ELECTRIC SRL | Municipiul Deva | Hunedoara | 47.8 m | 26 |
| 31 | FGM SOLAR SRL | Municipiul Oradea | Bihor | 47.8 m | 4 |
| 32 | FGM SOLAR RENEWABLE S.R.L. | Municipiul Oradea | Bihor | 44.1 m | 245 |
| 33 | AMERESCO SUNEL ENERGY S.A ATENA - SUCURSALA BUCUREȘTI | Bucureşti Sectorul 1 | Bucureşti | 40.3 m | — |
| 34 | ALM POWER GROUP SRL | Sat Gherceşti, Comuna Gherceşti | Dolj | 38.9 m | 85 |
| 35 | BUSINESS BUILDERS MANAGEMENT TELECOM S.R.L. | Bucureşti Sectorul 6 | Bucureşti | 36.8 m | 108 |
| 36 | PRO CONECT SERVICII S.R.L. | Municipiul Cluj-Napoca | Cluj | 35.4 m | 285 |
| 37 | PRO ELTE CONSTRUCTION S.R.L. | Bucureşti Sectorul 2 | Bucureşti | 34.0 m | 19 |
| 38 | ELEMO SRL | Municipiul Constanţa | Constanţa | 31.1 m | 43 |
| 39 | COMPLET INSTAL CONSTRUCT SRL | Municipiul Oradea | Bihor | 31.1 m | 50 |
| 40 | SUNNERG RENEWABLE SERVICE S.R.L. | Bucureşti Sectorul 2 | Bucureşti | 27.3 m | 6 |
| 41 | ELMOND COM SRL | Municipiul Iaşi | Iaşi | 25.6 m | 62 |
| 42 | CLASS ELECTRIC SRL | Bucureşti Sectorul 6 | Bucureşti | 24.5 m | 17 |
| 43 | ORESI ENERGY SRL | Municipiul Cluj-Napoca | Cluj | 23.0 m | 1 |
| 44 | EDMA TELEKOM S.R.L. | Sat Biharia, Comuna Biharia | Bihor | 22.8 m | 46 |
| 45 | FEVALDAN SERVICE SRL | Municipiul Târgu Jiu | Gorj | 22.5 m | 23 |
| 46 | CG TELCO S.R.L. | Sat Baloteşti, Comuna Baloteşti | Ilfov | 20.3 m | 19 |
| 47 | INFO SERVICE & COMPUTERS SRL | Bucureşti Sectorul 6 | Bucureşti | 19.3 m | 26 |
| 48 | LUCIMAR SRL | Municipiul Iaşi | Iaşi | 18.8 m | 40 |
| 49 | ISOLMEC EUROPE S.R.L. | Municipiul Timişoara | Timiş | 18.4 m | 13 |
| 50 | HIDROELECTRIC CONSTRUCT SRL | Bucureşti Sectorul 1 | Bucureşti | 17.8 m | 1 |
| 51 | ENEXUS CONSTRUCTION MAINTENANCE S.R.L. | Loc. Voluntari, Oraş Voluntari | Ilfov | 17.7 m | 10 |
| 52 | BIS PERFECT CONCEPT S.R.L. | Municipiul Piteşti | Argeş | 17.1 m | 11 |
| 53 | CALIK ENERJI SANAYI VE TICARET ANONIM SIRKETI ISTANBUL SUCURSALA NAVODARI | Loc. Năvodari, Oraş Năvodari | Constanţa | 16.7 m | 103 |
| 54 | ETD GRUP MOBIL S.R.L. | Municipiul Buzău | Buzău | 15.9 m | 23 |
| 55 | 3 Z ELECTROSERVICE SRL | Municipiul Piatra Neamţ | Neamţ | 15.7 m | 22 |
| 56 | TELECOMPONENTI ROMANIA SRL | Bucureşti Sectorul 4 | Bucureşti | 15.6 m | 7 |
| 57 | FLAMEN EXPERT S.R.L. | Municipiul Slobozia | Ialomiţa | 15.4 m | 13 |
| 58 | T & T CONSULTING 2001 SRL | Bucureşti Sectorul 6 | Bucureşti | 15.3 m | 20 |
| 59 | DELTANET SRL | Sat Bod, Comuna Bod | Braşov | 15.0 m | 73 |
| 60 | COSERI ELECTRIC CO SRL | Loc. Ineu, Oraş Ineu | Arad | 13.5 m | 28 |
| 61 | EUROSEL TRANS SRL | Municipiul Salonta | Bihor | 13.0 m | 12 |
| 62 | ELNOS SERBIA FILIALA ROMANIA S.R.L. | Municipiul Cluj-Napoca | Cluj | 12.0 m | 33 |
| 63 | ARYTRANS CONSTRUCT & TELECOM S.R.L. | Sat Ciolpani, Comuna Ciolpani | Ilfov | 11.9 m | 21 |
| 64 | SOTEC SRL | Municipiul Ploieşti | Prahova | 11.6 m | 21 |
| 65 | ENT RENEWABLES S.R.L. | Bucureşti Sectorul 3 | Bucureşti | 11.4 m | 1 |
| 66 | MECANOELECTRICA SRL | Municipiul Târgu Jiu | Gorj | 10.9 m | 26 |
| 67 | ACAR ENERGY SOLUTIONS S.R.L. | Municipiul Făgăraş | Braşov | 10.6 m | 4 |
| 68 | PETAWATT ENERGIA SRL | Municipiul Piteşti | Argeş | 9.7 m | 3 |
| 69 | NETGRID TELECOM SRL | Bucureşti Sectorul 2 | Bucureşti | 9.5 m | 26 |
| 70 | RADIO TRANSPORT COMMUNICATION SRL | Bucureşti Sectorul 5 | Bucureşti | 9.3 m | 21 |
| 71 | CONSTRUCTION RESOURCES INTERNATIONAL S.R.L. | Bucureşti Sectorul 6 | Bucureşti | 9.3 m | 35 |
| 72 | INTERVALLE GROUP SRL | Municipiul Mediaş | Sibiu | 9.2 m | 46 |
| 73 | LINE CONNECT CONSTRUCT S.R.L. | Sat Albeşti, Comuna Albeşti | Mureş | 8.4 m | 18 |
| 74 | OSB INTERNATIONAL GROUP S.R.L. | Loc. Cisnădie, Oraş Cisnădie | Sibiu | 8.3 m | 48 |
| 75 | ENERGOTEL CONSTRUCT SYSTEM S.R.L. | Bucureşti Sectorul 6 | Bucureşti | 8.2 m | 12 |
| 76 | FAN TELECOM TECHNOLOGY S.R.L. | Municipiul Cluj-Napoca | Cluj | 7.9 m | 4 |
| 77 | ZYLISH TELECOM S.R.L. | Municipiul Baia Mare | Maramureş | 7.4 m | 9 |
| 78 | ELMONT SA | Municipiul Zalău | Sălaj | 6.2 m | 14 |
| 79 | ENERGO IMPEX SRL | Municipiul Aiud | Alba | 6.1 m | 14 |
| 80 | ENERGIA PRIMA O&M EST SRL | Comuna Domneşti | Ilfov | 6.0 m | 6 |
| 81 | US SOFTWARE SOLUTIONS S.R.L. | Bucureşti Sectorul 1 | Bucureşti | 5.8 m | 23 |
| 82 | HD NETWORKING SRL | Municipiul Iaşi | Iaşi | 5.8 m | 14 |
| 83 | REB COMTEL SRL | Municipiul Braşov | Braşov | 5.5 m | 33 |
| 84 | STEFAN BAUMASCHINEN S.R.L. | Comuna Fundeni | Călăraşi | 5.4 m | 6 |
| 85 | TIK COMMUNICATIONS SRL | Bucureşti Sectorul 4 | Bucureşti | 5.2 m | 2 |
| 86 | INSTALCO A.G. SRL | Municipiul Mangalia | Constanţa | 5.2 m | 48 |
| 87 | START BIT CONSTRUCT S.R.L. | Bucureşti Sectorul 3 | Bucureşti | 5.2 m | 6 |
| 88 | ELECTRIC MIX S.R.L. | Sat Bojoiu, Comuna Robăneşti | Dolj | 5.0 m | 9 |
| 89 | CONSTRUCT ELECTRON T.C. SRL | Municipiul Piteşti | Argeş | 5.0 m | 20 |
| 90 | CRISTALIN PROJECT MANAGEMENT SRL | Bucureşti Sectorul 1 | Bucureşti | 5.0 m | 23 |
| 91 | B.A.M.A. GRUP SRL | Sat Valea Seacă, Comuna Valea Seacă | Bacău | 4.9 m | 13 |
| 92 | GMSOLAR SRL | Municipiul Bârlad | Vaslui | 4.8 m | 16 |
| 93 | INFO GENO SRL | Municipiul Bacău | Bacău | 4.7 m | 26 |
| 94 | SILENT INSTAL S.R.L. | Bucureşti Sectorul 2 | Bucureşti | 4.6 m | 2 |
| 95 | SAGA ENERGY SRL | Sat Aroneanu, Comuna Aroneanu | Iaşi | 4.5 m | 8 |
| 96 | RADULESCU GABIDM CONSTRUCT S.R.L. | Sat Ibrianu, Comuna Corneşti | Dâmboviţa | 4.3 m | 13 |
| 97 | FIBER NET SRL | Municipiul Râmnicu Sărat | Buzău | 4.3 m | 43 |
| 98 | AVITEL CONTRACTING S.R.L. | Bucureşti Sectorul 3 | Bucureşti | 3.9 m | 1 |
| 99 | GORENERGO S.R.L. | Bucureşti Sectorul 2 | Bucureşti | 3.8 m | 18 |
| 100 | ESAPRO RO SRL | Sat Ghiroda, Comuna Ghiroda | Timiş | 3.8 m | 13 |
