| 1 | Tokyo Electric Power Company Holdings, Incorporated | Unitedkingdom | Ealing | 13 Elers Road | London | W13 9QA | N/A | 1998 | $57,179,518,290 | 1 | N/A | N/A | FC021425 |
| 2 | Westnetz GMBH | Germany | Dortmund | Florianstr. 15-21 | Dortmund, Stadt | 44139 | iam.***** | 2019 | $9,112,546,436 | 6,140 | N/A | N/A | 44135B30872 |
| 3 | Ge Vernova International LLC | Unitedkingdom | Stafford | C/o UK Grid Solutions Limited | Staffordshire | ST16 1WT | N/A | 1961 | $6,262,662,000 | 421 | N/A | N/A | FC006906 |
| 4 | Sanomedic Polska Sp Z O O | Poland | Nowy Tomyśl | Ul. Kolejowa 20 | Województwo Wielkopolskie | 64300 | sunriseenergy.***** | 2018 | $1,636,816,604 | 7 | N/A | N/A | 5213825543 |
| 5 | City Electrical Factors LIMITED | Unitedkingdom | Kenilworth | 141 | Warwickshire | CV8 2SU | cef.***** | 1951 | $1,468,882,461 | 3,487 | N/A | N/A | 00336408 |
| 6 | Bouygues Energies & Services | France | Guyancourt | 1 Avenue Eugene Freyssinet | Yvelines | 78280 | bouygues-es.***** | 1980 | $1,318,604,552 | 4,792 | N/A | N/A | 77566487304147 |
| 7 | Cobra Instalaciones Y Servicios SA | Spain | Madrid | Calle Cardenal Marcelo Spinola 10 | Madrid | 28016 | grupocobra.***** | 1980 | $1,240,301,430 | 3,654 | N/A | N/A | A46146387 |
| 8 | Eirgrid Public LIMITED Company | Ireland | Dublin | Legal Department | Dublin | D04 FW28 | eirgrid.***** | 2001 | $1,235,036,740 | 610 | N/A | N/A | 338522 |
| 9 | Alcatel Submarine Networks | France | Les Ulis | 1 Avenue Du Canada | Essonne | 91940 | N/A | 1992 | $1,149,418,135 | 1,349 | N/A | N/A | 38953425600117 |
| 10 | Tclarke Contracting LIMITED | Unitedkingdom | Moorgate | 30 St. Mary Axe | London | EC3A 8BF | tclarke.***** | 1923 | $1,071,032,594 | 760 | N/A | N/A | 00189434 |
| 11 | Eiffage Energia Slu | Spain | Albacete | Carretera Mahora, Km 3,200 | Albacete | 02006 | energia.***** | 1998 | $1,051,719,201 | 4,260 | N/A | N/A | B02272490 |
| 12 | Spie Citynetworks | Italy | Milano | Via Tiziano 32 | Milano | 20145 | N/A | 2021 | $997,289,455 | 30 | N/A | N/A | IT11951040960 |
| 13 | Enpal B.V., Zweigniederlassung Berlin | Germany | Berlin | Bödikerstr. 25 | Berlin, Stadt | 10245 | enpal.***** | 2017 | $961,102,760 | 2,400 | N/A | N/A | 10623B253384B |
| 14 | Arris Global LTD. | Unitedkingdom | Saint Giles | 16 Great Queen Street | London | WC2B 5AH | commscope.***** | 1982 | $947,958,000 | 296 | N/A | N/A | 01672847 |
| 15 | Spie Citynetworks | France | Saint-ouen-sur-seine | Tsa 20028 St Ouen sur Seine 93484 St Ouen Cedex | Seine-saint-denis | 93400 | N/A | 2000 | $945,616,199 | 3,968 | N/A | N/A | 43408539500938 |
| 16 | Tokyo Electron Europe LIMITED | Austria | Villach | Europastraße 8 | Kärnten | 9500 | N/A | 1994 | $925,424,898 | 30 | N/A | N/A | FN428951k |
| 17 | Itel SPA | Italy | San Gregorio Di Catania | Via Cerza 4 | Catania | 95027 | aziende.***** | 1973 | $847,737,541 | 135 | N/A | N/A | IT00250450871 |
| 18 | Siemens Gamesa Renewable Energy Deutschland GMBH | Germany | Hamburg | Beim Strohhause 17-31 | Hamburg, Freie Und Hansestadt | 20097 | areva-wind.***** | 2020 | $838,733,128 | 601 | N/A | N/A | 28195B3715BHV |
| 19 | Eiffage Energie Systemes - Clemessy | France | Mulhouse | 18 Rue de Thann | Haut-rhin | 68200 | clemessy.***** | 1957 | $781,681,677 | 3,997 | N/A | N/A | 94575213700212 |
| 20 | Dalkia Group LIMITED | Unitedkingdom | Staines-upon-thames | Twenty, Kingston Road | Surrey | TW18 4LG | N/A | 2015 | $772,009,464 | 4,064 | N/A | N/A | 09752439 |
| 21 | Cefla Soc Coop | Italy | Imola | Via Bicocca 14/c | Bologna | 40026 | cefla.***** | 1932 | $704,703,245 | 1,299 | N/A | N/A | IT00499791200 |
| 22 | Snef | France | Marseille | 87 Av Ibrahim Ali | Bouches-du-rhône | 13015 | snef.***** | 1954 | $676,699,369 | 4,037 | N/A | N/A | 05680065900155 |
| 23 | Kemp & Lauritzen A/S | Denmark | Albertslund | Roskildevej 12 | Hovedstaden | 2620 | kemp-lauritzen.***** | 1954 | $673,790,520 | 2,986 | N/A | N/A | 57471719 |
| 24 | Bravida Danmark A/S | Denmark | Brøndby | Park Alle 373 | Hovedstaden | 2605 | bravida.***** | 1910 | $641,435,985 | 3,021 | N/A | N/A | 14769005 |
| 25 | Spie Building Solutions | France | Saint-ouen-sur-seine | Tsa 90026 - 93484 Saint Ouen sur Seine Cedex | Seine-saint-denis | 93400 | N/A | 2001 | $635,628,717 | 2,765 | N/A | N/A | 44005586102730 |
| 26 | Sirti Telco Infrastructures SPA | Italy | Sesto San Giovanni | Viale Thomas Alva Edison 110 | Milano | 20099 | sirti.***** | 2022 | $630,717,225 | 2,297 | N/A | N/A | IT12492310961 |
| 27 | Altrad Services LIMITED | Unitedkingdom | Warrington | 7 Asher Court | Warrington | WA4 4ST | capeplc.***** | 1997 | $626,799,350 | 2,309 | N/A | N/A | 03337119 |
| 28 | Site SPA | Italy | Bologna | Via del Tuscolano 15 | Bologna | 40128 | sitespa.***** | 1990 | $595,635,402 | 2,999 | N/A | N/A | IT03983200373 |
| 29 | Spie Industrie | France | Toulouse | Zone Industrielle Montaudran | Haute-garonne | 31400 | spie.***** | 2018 | $589,449,252 | 3,210 | N/A | N/A | 84460672300022 |
| 30 | Nidec Asi SPA | Italy | Cinisello Balsamo | Via Fratelli Gracchi 39 | Milano | 20092 | nidec-industrial.***** | 1960 | $556,197,914 | 907 | N/A | N/A | IT03238380962 |
| 31 | Sogetrel | France | Issy-les-moulineaux | 143 Av de Verdun | Hauts-de-seine | 92130 | sogetrel.***** | 1994 | $552,221,398 | 2,802 | N/A | N/A | 39776783100811 |
| 32 | Adt Fire And Security PLC | Unitedkingdom | Sunbury-on-thames | Security House | Surrey | TW16 5DB | adt.***** | 1874 | $522,700,261 | 2,466 | N/A | N/A | 01161045 |
| 33 | Ericsson Telecomunicazioni SPA | Italy | Roma | Via Anagnina 203 | Roma | 00118 | ericsson.***** | 1918 | $517,296,596 | 1,533 | N/A | N/A | IT00886171008 |
| 34 | Brackelmann & Wiggerich Elektro- Und Gebäudesystemtechnik GMBH | Germany | Hamm | Alleestr. 56 | Hamm, Stadt | 59065 | brackelmann-wiggerich.***** | 2004 | $508,992,588 | 42 | N/A | N/A | 59065B4421 |
| 35 | Spie Facilities | France | Saint-ouen-sur-seine | Tsa 10027 - 93484 Saint-ouen-sur-seine Cedex | Seine-saint-denis | 93400 | N/A | 2011 | $507,774,491 | 2,906 | N/A | N/A | 53870002200345 |
| 36 | Dornan Engineering, Filial Af Dornan Engineering LIMITED, Irland | Denmark | Kastrup | Kastrup Tværvej C 4 | Hovedstaden | 2770 | N/A | 2017 | $496,113,582 | 5 | N/A | N/A | 38441647 |
| 37 | Assemblin El AB | Sweden | Stockholm | Västberga Alle 1 | Stockholms Län | 12630 | assemblin.***** | 1916 | $481,933,553 | 3,000 | N/A | N/A | 5560134628 |
| 38 | Chubb France | France | Cergy | Campus Saint Christophe Batiment Ediso | Val-d'oise | 95800 | chubbsecurite.***** | 1970 | $466,342,638 | 2,000 | N/A | N/A | 70200052201754 |
| 39 | Ensio SAS | France | Vélizy-villacoublay | Immeuble le Breguet | Yvelines | 78140 | N/A | 1968 | $464,673,782 | 938 | N/A | N/A | 31050577100272 |
| 40 | Kirby Group Engineering Unlimited Company | Ireland | Limerick | Raheen Business Park | Limerick | V94 NNC4 | kirbygroup.***** | 1964 | $455,768,983 | 1,158 | N/A | N/A | 41839 |
| 41 | Tsk Electronica Y Electricidad SA | Spain | Gijón | Lugar Parque Cientifico Tecnologico Gijon (cl Ada Byron) 220 | Asturias | 33203 | grupotsk.***** | 1963 | $450,839,983 | 825 | N/A | N/A | A48035901 |
| 42 | Huawei Technologies Duesseldorf GMBH | Germany | Düsseldorf | Hansaallee 205 | Düsseldorf, Stadt | 40549 | huawei.***** | 2018 | $449,256,894 | 1,030 | N/A | N/A | 40227B56063 |
| 43 | Ert Technologies | France | Thaon-les-vosges | Thaon-les-vosges | Vosges | 88150 | ert-technologies.***** | 2000 | $447,773,674 | 1,471 | N/A | N/A | 43250597200278 |
| 44 | Netgear International LIMITED | Ireland | Cork | 6th Floor, Penrose Two | Cork | T23 YY09 | netgear.***** | 2005 | $438,760,000 | 46 | N/A | N/A | 409506 |
| 45 | Edf Solutions Solaires | France | Limonest | Etage 2 | Rhône | 69760 | N/A | 2000 | $437,328,843 | 620 | N/A | N/A | 43316090000455 |
| 46 | Telia Lietuva, AB | Lithuania | Vilnius | Saltoniskiu G. 7a | Vilniaus Apskritis | 08126 | telia.***** | 1992 | $432,241,627 | 1,728 | N/A | N/A | 121215434 |
| 47 | Ng Bailey LIMITED | Unitedkingdom | Leeds | Ground Floor (suite T) | Leeds, West Yorkshire | LS11 0DL | ngbailey.***** | 1938 | $430,171,844 | 1,486 | N/A | N/A | 00342778 |
| 48 | Cteam Consulting & Anlagenbau GMBH | Germany | Ummendorf | Im Stocken 6 | Biberach | 88444 | cteam.***** | 2025 | $404,630,222 | 841 | N/A | N/A | 89073B641741 |
| 49 | Ineo Infracom | France | Dijon | 21 Avenue Francoise Giroud | Côte-d'or | 21000 | engie-ineo.***** | 1996 | $398,786,808 | 1,493 | N/A | N/A | 40986794200909 |
| 50 | Phoenix Me LIMITED | Unitedkingdom | Whitechapel | Central House | London | E1 8DZ | phoenixme.***** | 1931 | $390,727,073 | 420 | N/A | N/A | 00255476 |
| 51 | Nokia Solutions And Networks Italia SPA | Italy | Vimercate | Via Energy Park 14 | Monza E Brianza | 20871 | nokia.***** | 2007 | $369,633,020 | 1,225 | N/A | N/A | IT05679490960 |
| 52 | Bouygues E&S Italia SPA | Italy | Milano | Via Giorgio Stephenson 73 | Milano | 20157 | bouygues-es.***** | 1999 | $359,373,936 | 510 | N/A | N/A | IT12763640153 |
| 53 | Electricite Industrielle J. P. Fauche | France | Montauban | 37 Avenue Gambetta | Tarn-et-garonne | 82000 | fauche.***** | 1977 | $343,295,247 | 1,815 | N/A | N/A | 30825057001087 |
| 54 | Sinelec SPA | Italy | Tortona | Strada Provinciale 211 della Lomellina | Alessandria | 15057 | sinelec.***** | 2000 | $342,707,675 | 609 | N/A | N/A | IT07937690019 |
| 55 | Aramark Ireland Holdings LIMITED | Ireland | Dublin | Newenham House | Dublin | D17 AY61 | aramark.***** | 2000 | $341,171,230 | 4,889 | N/A | N/A | 324452 |
| 56 | Petroland Sp Z O O | Poland | Kraków | Ul. Normandzka 30 | Województwo Małopolskie | 30383 | petro-land.***** | 2004 | $340,455,127 | 8 | N/A | N/A | 6762258668 |
| 57 | Cbre Gws SRL | Italy | Milano | Via Caduti Di Marcinelle 3 | Milano | 20134 | cbre.***** | 1979 | $340,074,546 | 500 | N/A | N/A | IT12222600152 |
| 58 | One Nordic AB | Sweden | Malmö | Arenagatan 35 | Skåne Län | 21532 | one-nordic.***** | 1960 | $334,338,329 | 500 | N/A | N/A | 5560757287 |
| 59 | Sobeca | France | Anse | Zone Industrielle | Rhône | 69480 | sobeca.***** | 1970 | $332,396,384 | 1,713 | N/A | N/A | 70378024700044 |
| 60 | Fcc Industrial E Infraestructuras Energeticas SA | Spain | Madrid | Avenida Camino de Santiago 40 | Madrid | 28050 | fcc.***** | 1977 | $331,046,801 | 1,110 | N/A | N/A | A28482024 |
| 61 | Inelfe | France | Puteaux | Immeuble Window | Hauts-de-seine | 92800 | N/A | 2008 | $329,760,227 | 12 | N/A | N/A | 50927007000048 |
| 62 | Diebold Nixdorf Deutschland GMBH | Germany | Paderborn | Heinz-nixdorf-ring 1 | Paderborn | 33106 | dieboldnixdorf.***** | 2018 | $321,556,469 | 222 | N/A | N/A | 33098B13110 |
| 63 | Sinelec Denmark, Filial Af Sinelec S.P.A., Italien | Denmark | Ballerup | Industriparken 44a | Hovedstaden | 2750 | N/A | 2020 | $320,269,717 | 5 | N/A | N/A | 41153555 |
| 64 | Granitor Electro AB | Sweden | Sandviken | Jansasgatan 8 | Gävleborgs Län | 81139 | midroc.***** | 1991 | $319,900,680 | 2,000 | N/A | N/A | 5564363595 |
| 65 | Telebit SPA | Italy | Casier | Via Marco Fanno 1 | Treviso | 31030 | telebit.***** | 1989 | $316,532,735 | 914 | N/A | N/A | IT01144610936 |
| 66 | Specialist Technical Engineering Services Unlimited Company | Ireland | Waterford | Block 10 Cleaboy Business Park | Waterford | N/A | stsgroup.***** | 2006 | $308,773,678 | 749 | N/A | N/A | 432334 |
| 67 | Altitude Infrastructure Construction | France | Courbevoie | Tour Trinity | Hauts-de-seine | 92400 | N/A | 2008 | $308,395,054 | 369 | N/A | N/A | 50960128200445 |
| 68 | Tyco Integrated Security SLU. | Spain | Las Rozas de Madrid | Calle Pollensa (ctra de la Coruña Km 23,5 Edif Ecu) 6 | Madrid | 28290 | tyco.***** | 1998 | $304,123,302 | 500 | N/A | N/A | B82115577 |
| 69 | Stäubli Tec-Systems GMBH | Austria | Asten | Bahnhofstraße 1a | Oberösterreich | 4481 | staubli.***** | 1986 | $301,407,510 | 1,086 | N/A | N/A | FN491361s |
| 70 | Enerveo LIMITED | Unitedkingdom | East Lavant | 34 Palmerston Business Park | West Sussex | PO14 1DJ | N/A | 1988 | $277,173,842 | 1,097 | N/A | N/A | 02317133 |
| 71 | Sociedad Española De Montajes Industriales SA | Spain | Madrid | Avenida Manoteras, 6 - Segunda Planta | Madrid | 28050 | semi.***** | 1923 | $267,545,955 | 1,312 | N/A | N/A | A28018083 |
| 72 | Eiffage Energie Systemes - Ile De France | France | Saint-denis | 2 Rue Flora Tristan | Seine-saint-denis | 93210 | forclumsante.***** | 1998 | $266,056,225 | 1,207 | N/A | N/A | 42054064300269 |
| 73 | Essex Services Group LIMITED | Unitedkingdom | South Hornchurch | Viking Business Centre | London | RM7 0HL | esglimited.***** | 1975 | $262,434,733 | 429 | N/A | N/A | 01224662 |
| 74 | Essex Group Holdings International LIMITED | Unitedkingdom | Rochford | Millhouse 32-38 East Street | Essex | SS4 1DB | N/A | 2016 | $262,197,498 | 290 | N/A | N/A | 10217582 |
| 75 | Kone Hissit OY | Finland | Helsinki | Aku Korhosen Tie 8 | Uusimaa | 00440 | kone.***** | 2004 | $257,279,006 | 814 | N/A | N/A | 19042921 |
| 76 | Comal SPA | Italy | Montalto Di Castro | Strada Statale Aurelia | Viterbo | 01014 | comalgroup.***** | 2001 | $252,173,873 | 500 | N/A | N/A | IT01685280560 |
| 77 | Enaco Energieanlagen- Und Kommunikationstechnik GMBH | Germany | Maisach | Tulpenstr. 19 | Fürstenfeldbruck | 82216 | enaco.***** | 1964 | $251,054,047 | 826 | N/A | N/A | 80333B6292 |
| 78 | C.L.C. Contractors LIMITED | Unitedkingdom | Upper Shirley | Vincent Avenue | Southampton | SO16 6PQ | clcgroup.***** | 1975 | $249,768,124 | 953 | N/A | N/A | 01230435 |
| 79 | Jacops | Belgium | Deerlijk | Nijverheidslaan 31 | West Vlaanderen | 8540 | jacops.***** | 2018 | $248,276,263 | 610 | N/A | N/A | BE0415826627 |
| 80 | Moncobra SA | Spain | Madrid | Calle Cardenal Marcelo Spinola 10 | Madrid | 28016 | grupocobra.***** | 1988 | $248,039,559 | 1,650 | N/A | N/A | A78990413 |
| 81 | Gemmo SPA | Italy | Arcugnano | Via Dell'Industria 2 | Vicenza | 36057 | gemmo.***** | 1919 | $246,097,896 | 905 | N/A | N/A | IT03214610242 |
| 82 | Sociedad Iberica De Construcciones Electricas SA | Spain | Alcobendas | Calle de la Granja, 72 - Pol Industrial | Madrid | 28108 | sice.***** | 1921 | $242,315,268 | 1,082 | N/A | N/A | A28002335 |
| 83 | Constructel Constructions Telecommunica. | France | Portes-lès-valence | Zad de Morlon | Drôme | 26800 | constructel.***** | 2002 | $242,257,999 | 1,308 | N/A | N/A | 44283546800087 |
| 84 | Gbc Solino S.R.O. | Czechrepublic | Olomouc | U Panelarny 551/10 | Olomoucký | 77900 | gbc-solino.***** | 1992 | $240,973,051 | 20 | N/A | N/A | 46983465 |
| 85 | Cebat SPA | Italy | Roma | Via Angelo Banti 26/28 | Roma | 00138 | cebat.***** | 2019 | $240,490,905 | 1,298 | N/A | N/A | IT15324221009 |
| 86 | Acciona Industrial SA. | Spain | Madrid | Calle Mesena 80 | Madrid | 28033 | N/A | 1989 | $232,277,402 | 308 | N/A | N/A | A41374307 |
| 87 | Global Energy Services Siemsa SA | Spain | Zamudio | Camino Laida | Vizcaya | 48170 | siemsa.***** | 1999 | $231,539,155 | 570 | N/A | N/A | A82509779 |
| 88 | Aico | Unitedkingdom | Kinnerley | Maesbury Road | Shropshire | SY10 8NR | aico.***** | 1990 | $230,813,596 | 73 | N/A | N/A | 02544399 |
| 89 | Imesapi SA | Spain | Madrid | Avenida Ramon Y Cajal 107 | Madrid | 28043 | imes.***** | 1955 | $230,313,610 | 1,748 | N/A | N/A | A28010478 |
| 90 | Bachner Elektro GMBH & CO. KG | Austria | Steyr | Bmw-allee 2 | Oberösterreich | 4400 | bachner.***** | 2004 | $229,900,252 | 30 | N/A | N/A | FN242117f |
| 91 | Enel X Italia SRL | Italy | Roma | Via Luigi Boccherini 15 | Roma | 00198 | N/A | 2014 | $228,164,678 | 500 | N/A | N/A | IT13111961002 |
| 92 | Ineo Nucleaire | France | Lyon | 6 Rue Alexander Fleming | Rhône | 69007 | N/A | 1996 | $227,598,551 | 1,024 | N/A | N/A | 40989907700237 |
| 93 | Sirti Digital Solutions SPA | Italy | Sesto San Giovanni | Viale Thomas Alva Edison 110 | Milano | 20099 | sirti.***** | 2006 | $224,772,305 | 500 | N/A | N/A | IT12492300962 |
| 94 | Michael J. Lonsdale LIMITED | Unitedkingdom | Slough | Unit 1 | Slough | SL3 6EY | michaellonsdale.***** | 1986 | $224,565,352 | 238 | N/A | N/A | 02066642 |
| 95 | Ip-Only Produktion AB | Sweden | Uppsala | N/A | Uppsala Län | 75381 | N/A | 2006 | $224,269,420 | 5 | N/A | N/A | 5567179444 |
| 96 | Cbes LIMITED | Unitedkingdom | Drumchapel | Caledonia House | Glasgow City | G5 0US | cbes.***** | 1985 | $222,643,971 | 803 | N/A | N/A | SC288763 |
| 97 | Electrogrup SA | Romania | Cluj-napoca | Calea Turzii Nr. 217 | Cluj | N/A | electrogrup.***** | 1997 | $222,280,396 | 668 | N/A | N/A | 9256208 |
| 98 | Satelec | France | Viry-châtillon | 24 Avenue Du General de Gaulle | Essonne | 91170 | satelec-fayat.***** | 1971 | $220,525,531 | 1,114 | N/A | N/A | 97120154600043 |
| 99 | Spie Nucleaire | France | Cergy | 95863 Cergy Pontoise Cedex | Val-d'oise | 95800 | spie.***** | 1992 | $216,302,813 | 1,399 | N/A | N/A | 66204928700052 |
| 100 | Eiffage Energie Systemes - Transport & Distribution | France | Verquin | Route Departementale 937 | Pas-de-calais | 62131 | eiffageenergie.***** | 1982 | $212,395,207 | 683 | N/A | N/A | 30912281000083 |