| 1 | ENEXUS RENEWABLE S.R.L. | Oraş Voluntari | Ilfov | 79.2 m | 36 |
| 2 | ELECTROMONTAJ SA | Bucureşti Sectorul 4 | Bucureşti | 71.7 m | 1,255 |
| 3 | WALDEVAR ENERGY S.R.L. | Municipiul Tulcea | Tulcea | 50.4 m | 1,071 |
| 4 | BUSINESS SERVICE CONSULT INTERNATIONAL S.R.L. | Municipiul Ploieşti | Prahova | 35.1 m | 7 |
| 5 | OSTENWEG MOUNTING POWER S.R.L. | Municipiul Mediaş | Sibiu | 25.8 m | 149 |
| 6 | LINIAL ELECTRIC SRL | Municipiul Deva | Hunedoara | 25.7 m | 26 |
| 7 | DIGI INFRASTRUCTURA S.R.L. | Bucureşti Sectorul 5 | Bucureşti | 24.4 m | 3,638 |
| 8 | KOREA HYDRO & NUCLEAR POWER CO. LTD GYEONGJU-SI SUCURSALA BUCUREȘTI | Bucureşti Sectorul 2 | Bucureşti | 21.8 m | 64 |
| 9 | ETHGROUP S.R.L. | Bucureşti Sectorul 6 | Bucureşti | 16.3 m | 118 |
| 10 | ELECTROECHIPAMENT INDUSTRIAL SRL | Municipiul Reşiţa | Caraş-Severin | 13.3 m | 227 |
| 11 | ENERGOTECH SA | Bucureşti Sectorul 6 | Bucureşti | 12.1 m | 27 |
| 12 | PRO CONECT SRL | Municipiul Cluj-Napoca | Cluj | 11.6 m | 289 |
| 13 | ELECTROCONSTRUCTIA ELECON SA | Municipiul Braşov | Braşov | 11.5 m | 92 |
| 14 | PRO ELTE CONSTRUCTION S.R.L. | Bucureşti Sectorul 2 | Bucureşti | 10.1 m | 19 |
| 15 | SIMTEL TEAM S.A. | Bucureşti Sectorul 6 | Bucureşti | 10.1 m | 130 |
| 16 | ORESI ENERGY SRL | Municipiul Cluj-Napoca | Cluj | 9.5 m | 1 |
| 17 | EUROSEL TRANS SRL | Municipiul Salonta | Bihor | 9.1 m | 12 |
| 18 | FIRST CLASS TELECOM INTERNATIONAL SRL | Bucureşti Sectorul 2 | Bucureşti | 8.7 m | 100 |
| 19 | ENEXUS CONSTRUCTION MAINTENANCE S.R.L. | Loc. Voluntari, Oraş Voluntari | Ilfov | 7.4 m | 10 |
| 20 | SCHRAUBRAM S.R.L. | Loc. Pantelimon, Oraş Pantelimon | Ilfov | 7.1 m | 38 |
| 21 | EMFOR S.A. | Bucureşti Sectorul 4 | Bucureşti | 7.0 m | 138 |
| 22 | ALM POWER GROUP SRL | Sat Gherceşti, Comuna Gherceşti | Dolj | 6.8 m | 85 |
| 23 | ELECTROCONSTRUCŢIA ELCO TÎRGU JIU SA | Municipiul Târgu Jiu | Gorj | 6.2 m | 53 |
| 24 | T&D PRO ELECTRIC SRL | Bucureşti Sectorul 1 | Bucureşti | 5.7 m | 51 |
| 25 | ELMONT CONSTRUCT SRL | Municipiul Constanţa | Constanţa | 5.7 m | 78 |
| 26 | ENT RENEWABLES S.R.L. | Bucureşti Sectorul 3 | Bucureşti | 5.5 m | 1 |
| 27 | 3 Z ELECTROSERVICE SRL | Municipiul Piatra Neamţ | Neamţ | 5.3 m | 22 |
| 28 | FEVALDAN SERVICE SRL | Municipiul Târgu Jiu | Gorj | 5.3 m | 23 |
| 29 | ENERGIA PRIMA O&M EST SRL | Comuna Domneşti | Ilfov | 4.9 m | 6 |
| 30 | FLAMEN EXPERT S.R.L. | Municipiul Slobozia | Ialomiţa | 3.7 m | 13 |
| 31 | EDMA TELEKOM S.R.L. | Sat Biharia, Comuna Biharia | Bihor | 3.6 m | 46 |
| 32 | ELEMO SRL | Municipiul Constanţa | Constanţa | 3.4 m | 43 |
| 33 | LUCIMAR SRL | Municipiul Iaşi | Iaşi | 3.3 m | 40 |
| 34 | SUNNERG RENEWABLE SERVICE S.R.L. | Bucureşti Sectorul 2 | Bucureşti | 3.0 m | 6 |
| 35 | ELMOND COM SRL | Municipiul Iaşi | Iaşi | 2.9 m | 62 |
| 36 | AMERESCO SUNEL ENERGY S.A ATENA - SUCURSALA BUCUREȘTI | Bucureşti Sectorul 1 | Bucureşti | 2.7 m | — |
| 37 | INFO SERVICE & COMPUTERS SRL | Bucureşti Sectorul 6 | Bucureşti | 2.7 m | 26 |
| 38 | START BIT CONSTRUCT S.R.L. | Bucureşti Sectorul 3 | Bucureşti | 2.7 m | 6 |
| 39 | FGM SOLAR SRL | Municipiul Oradea | Bihor | 2.6 m | 4 |
| 40 | SHANGHAI ELECTRIC ROMANIA COMPANY S.R.L. | Bucureşti Sectorul 1 | Bucureşti | 2.5 m | 3 |
| 41 | SOLARPRO S.R.L. | Bucureşti Sectorul 2 | Bucureşti | 2.5 m | 23 |
| 42 | INSTAL ITTU SRL | Municipiul Cluj-Napoca | Cluj | 2.4 m | 61 |
| 43 | SOTEC SRL | Municipiul Ploieşti | Prahova | 2.4 m | 21 |
| 44 | FGM SOLAR RENEWABLE S.R.L. | Municipiul Oradea | Bihor | 2.3 m | 245 |
| 45 | COMPLET INSTAL CONSTRUCT SRL | Municipiul Oradea | Bihor | 2.2 m | 50 |
| 46 | GRID WORKS S.R.L. | Bucureşti Sectorul 5 | Bucureşti | 2.1 m | 45 |
| 47 | CONSTRUCTION RESOURCES INTERNATIONAL S.R.L. | Bucureşti Sectorul 6 | Bucureşti | 2.0 m | 35 |
| 48 | CAMUSAT ROM-TELECOMUNICATII SRL | Sat Baloteşti, Comuna Baloteşti | Ilfov | 1.9 m | 178 |
| 49 | MECANOELECTRICA SRL | Municipiul Târgu Jiu | Gorj | 1.9 m | 26 |
| 50 | BUSINESS BUILDERS MANAGEMENT TELECOM S.R.L. | Bucureşti Sectorul 6 | Bucureşti | 1.8 m | 108 |
| 51 | ZYLISH TELECOM S.R.L. | Municipiul Baia Mare | Maramureş | 1.8 m | 9 |
| 52 | T & T CONSULTING 2001 SRL | Bucureşti Sectorul 6 | Bucureşti | 1.8 m | 20 |
| 53 | TELECOMPONENTI ROMANIA SRL | Bucureşti Sectorul 4 | Bucureşti | 1.7 m | 7 |
| 54 | N.G. INTERNATIONAL IMPEX SRL | Bucureşti Sectorul 2 | Bucureşti | 1.7 m | 1 |
| 55 | BIS PERFECT CONCEPT S.R.L. | Municipiul Piteşti | Argeş | 1.7 m | 11 |
| 56 | LINE CONNECT CONSTRUCT S.R.L. | Sat Albeşti, Comuna Albeşti | Mureş | 1.6 m | 18 |
| 57 | PREMAT CONSTRUCTII SRL | Sat Clinceni, Comuna Clinceni | Ilfov | 1.6 m | 5 |
| 58 | PRO CONECT SERVICII S.R.L. | Municipiul Cluj-Napoca | Cluj | 1.5 m | 285 |
| 59 | HIDROELECTRIC CONSTRUCT SRL | Bucureşti Sectorul 1 | Bucureşti | 1.5 m | 1 |
| 60 | ELECTRIC MIX S.R.L. | Sat Bojoiu, Comuna Robăneşti | Dolj | 1.5 m | 9 |
| 61 | GMSOLAR SRL | Municipiul Bârlad | Vaslui | 1.4 m | 16 |
| 62 | LIGHTMAR SRL | Municipiul Tecuci | Galaţi | 1.4 m | 4 |
| 63 | OSTENWEG SYSPLAN S.R.L. | Municipiul Mediaş | Sibiu | 1.4 m | 22 |
| 64 | ENERGOTEL CONSTRUCT SYSTEM S.R.L. | Bucureşti Sectorul 6 | Bucureşti | 1.4 m | 12 |
| 65 | ACAR ENERGY SOLUTIONS S.R.L. | Municipiul Făgăraş | Braşov | 1.4 m | 4 |
| 66 | STUMIDAN S.R.L. | Municipiul Vaslui | Vaslui | 1.4 m | 16 |
| 67 | GORENERGO S.R.L. | Bucureşti Sectorul 2 | Bucureşti | 1.3 m | 18 |
| 68 | GREEN BOX E-CO S.R.L. | Sat Bălcăuţi, Comuna Bălcăuţi | Suceava | 1.3 m | 3 |
| 69 | RADULESCU GABIDM CONSTRUCT S.R.L. | Sat Ibrianu, Comuna Corneşti | Dâmboviţa | 1.2 m | 13 |
| 70 | SERVICII ENERGETICE-PROIECTARE SRL | Sat Lilieci, Comuna Hemeiuş | Bacău | 1.2 m | 1 |
| 71 | ELECTROCONSTRUCTIA ELCO SA | Municipiul Botoşani | Botoşani | 1.2 m | 101 |
| 72 | TEL PROIECT SRL | Sat Baciu, Comuna Baciu | Cluj | 1.2 m | 9 |
| 73 | DALISILVA TELECOM S.R.L. | Sat Voineşita, Comuna Voineasa | Vâlcea | 1.1 m | 1 |
| 74 | ENVIRUX PROJECT SRL | Bucureşti Sectorul 3 | Bucureşti | 1.1 m | 1 |
| 75 | ARYTRANS CONSTRUCT & TELECOM S.R.L. | Sat Ciolpani, Comuna Ciolpani | Ilfov | 1.1 m | 21 |
| 76 | STEFAN BAUMASCHINEN S.R.L. | Comuna Fundeni | Călăraşi | 1.1 m | 6 |
| 77 | TELCONNECT S.R.L. | Municipiul Cluj-Napoca | Cluj | 1.1 m | 1 |
| 78 | ENERGY TECHNOLOGIES & SYSTEMS SRL | Bucureşti Sectorul 2 | Bucureşti | 1.1 m | 33 |
| 79 | ENERGO IMPEX SRL | Municipiul Aiud | Alba | 1.0 m | 14 |
| 80 | BROTHERS SOLAR GROUP S.R.L. | Loc. Năvodari, Oraş Năvodari | Constanţa | 991 k | 3 |
| 81 | OSB INTERNATIONAL GROUP S.R.L. | Loc. Cisnădie, Oraş Cisnădie | Sibiu | 978 k | 48 |
| 82 | ALDI-LEX CONSTRUCT S.R.L. | Bucureşti Sectorul 4 | Bucureşti | 839 k | 1 |
| 83 | B.A.M.A. GRUP SRL | Sat Valea Seacă, Comuna Valea Seacă | Bacău | 831 k | 13 |
| 84 | FAN TELECOM TECHNOLOGY S.R.L. | Municipiul Cluj-Napoca | Cluj | 805 k | 4 |
| 85 | CONSTRUCT ELECTRON T.C. SRL | Municipiul Piteşti | Argeş | 801 k | 20 |
| 86 | ALOTON NET S.R.L. | Sat Sânpetru, Comuna Sânpetru | Braşov | 798 k | 1 |
| 87 | RADIO TRANSPORT COMMUNICATION SRL | Bucureşti Sectorul 5 | Bucureşti | 793 k | 21 |
| 88 | CLASS ELECTRIC SRL | Bucureşti Sectorul 6 | Bucureşti | 792 k | 17 |
| 89 | ELMONT SA | Municipiul Zalău | Sălaj | 779 k | 14 |
| 90 | ENERGY DOT SRL | Bucureşti Sectorul 1 | Bucureşti | 769 k | 19 |
| 91 | ADVANCED DESIGN SOLUTIONS S.R.L. | Bucureşti Sectorul 3 | Bucureşti | 720 k | 1 |
| 92 | RES ENGINEERING CONSULTANTS S.R.L. | Bucureşti Sectorul 6 | Bucureşti | 716 k | 0 |
| 93 | ZTX ENERGY S.R.L. | Municipiul Piteşti | Argeş | 712 k | 2 |
| 94 | TOPTEL CONSTRUCT SRL | Sat Glimboca, Comuna Glimboca | Caraş-Severin | 690 k | 8 |
| 95 | NETGRID TELECOM SRL | Bucureşti Sectorul 2 | Bucureşti | 685 k | 26 |
| 96 | SUBSEA OFFSHORE CONSULTING S.R.L. | Municipiul Constanţa | Constanţa | 677 k | 1 |
| 97 | OFFICE TECH SRL | Sat Sărata, Comuna Sărata | Bacău | 676 k | 15 |
| 98 | CG TELCO S.R.L. | Sat Baloteşti, Comuna Baloteşti | Ilfov | 673 k | 19 |
| 99 | SUNNERG CONSTRUCTION S.R.L. | Bucureşti Sectorul 2 | Bucureşti | 652 k | 9 |
| 100 | PRO CTM TELETECH SRL | Sat Ileana, Comuna Glodeanu Sărat | Buzău | 645 k | 11 |