| 893 | IMC Trading B.V. NL, Denmark filial | N0388693D | Mariane Thomsens Gade 1C, 6 | 8000 | Aarhus C | Aarhus C | DINAMARCA | MAYORISTA | | | | |
| 617 | A-DOS ENERGÍA SL | B25687401 | | | | | | | | 17/04/2017 | 06/08/2018 | Baja |
| 622 | AB ENERGIA 1903 S.L.U. | B22350466 | C/ Escuelas Pías, 12 | 22300 | Barbastro | Huesca | España | | 900 19 03 00 | 01/10/2017 | | |
| 640 | ABOUTWHITE, S.L. | B87177408 | C/Las Américas, 4 Nave AD | 28823 | Madrid | Madrid | España | | 900 494 861 | 07/01/2019 | | |
| 630 | ACSOL ENERGIA GLOBAL, S.A. | A87623971 | Ronda de Europa, 60 | 880 | Vilanova i la Geltrú | Barcelona | España | | 900 809 388 | 01/12/2017 | | |
| 854 | ACT COMMODITIES B.V | NL820413537B01 | Strawinskylaan 3127 | 1077ZX | Amsterdam | Holanda Septentrional | Países Bajos | Mayorista | | 01/10/2025 | | |
| 596 | ADELFAS ENERGIA, S.L. | B26500231 | Carretera San Adrian s/n | 26500 | Calahorra | La Rioja | España | | | 01/08/2016 | | |
| 567 | ADS ENERGY 8.0 S.L. | B66162421 | C/Ramón Rubial, 6-8 | 8911 | Barcelona | Barcelona | España | | | 01/11/2015 | | |
| 779 | ADX RENOVABLES, S.L. | B72562051 | Calle electrónica nº19, Planta 7, Puerta C | 08915 | Badalona | Barcelona | España | | 900 747 185 | 15/12/2022 | | |
| 841 | AEQ W2M, S.A. | A75729822 | c/ Príncipe de Vergara 131, planta 3 | 28002 | Madrid | Madrid | España | | 900 823 923 | 02/07/2025 | | |
| 833 | AG OIL SERVICES, S.L. | B19374933 | C/Marqués de Monroig nº 16, Bj | 08870 | Sitges | Barcelona | España | | 900 838 559 | 18/11/2024 | | |
| 745 | AGRI-ENERGIA, S.A. | A17000837 | C/ Girona, 155 | 17820 | Banyoles | Girona | España | | 900 72 72 72 | 01/10/2021 | | |
| 649 | AHORRELUZ SERVICIOS ONLINE S.L | B66868902 | Plaza Urquinaona 7, 3º | 8010 | Barcelona | Barcelona | España | | 900 831 169 | 01/11/2018 | | |
| 851 | AIRE LIMPIO, S.L. | B02469096 | Plaza Benjamin Palencia , nº 2 , entreplanta | 02002 | Albacete | Albacete | España | | 900 103 064 | 01/11/2025 | | |
| 601 | ALCANZIA ENERGIA, S.L.U | B98373269 | C/Colón 60, 4ª | 46004 | Valencia | Valencia | España | | 960000200 | 01/04/2017 | | |
| 765 | ALPEX IBÉRICA DE ENERGÍA, S.L. | B87910352 | Calle Zubano, 45, 1ªPlanta | 28010 | Madrid | Madrid | España | | 900 264 218 | 01/07/2022 | | |
| 673 | ALPHERG S.p.A. | IT10433300968 | Corso Europa, 2 | 20122 | Milano | Milano | Italia | Mayorista | | 01/01/2020 | 20/02/2023 | Baja |
| 100 | ALPIQ AG | N0391655H | Bahnhofquai 12, | 4600 | Olten | Olten | Suiza | | | 15/11/2012 | | |
| 73 | ALPIQ ENERGIA ESPAÑA, S.A.U. | A82405788 | C/Pedro Teixeida, 8-3º | 28020 | Madrid | Madrid | España | | 900 802 076 | 14/03/2011 | | |
| 588 | ALTERNA OPERADOR INTEGRAL S.L. | B87075982 | Calle José Echegaray, 1 | 28232 | Pozuelo de Alarcon | Madrid | España | | 900 525 664 | 01/02/2017 | 12/04/2023 | Baja |
| 735 | ALUMBRA CORPORACION S.L. | B66436437 | RAMBLA FRABA I PUIG, 57 - 1º - 2º | 08030 | Barcelona | Barcelona | España | | 900 908 885 | 15/04/2021 | 31/05/2023 | Baja |
| 795 | AMPERIOS ENERGY TRADE S.L. | B01970060 | C/Baixada de L´Estacio Nº 9 Piso 3 Puerta 3 | 46800 | Xàtiva | Valencia | España | | 9000877115 | 10/08/2023 | | |
| 611 | ANOTHER ENERGY OPTION S.L. | B93267300 | C/Serrano 41, 4º | 28001 | Madrid | Madrid | España | | 900 802 173 | 01/05/2019 | 15/01/2022 | Baja |
| 625 | ANTEA ENERGÍA COMERCIALIZADORA,S.L | B87757464 | C/ Goya 47 | 28001 | Madrid | Madrid | España | | 900 878 202 | 01/08/2017 | | |
| 702 | AOT ENERGY SWITZERLAND AG | CHE102285624MWST | Hinterbergstrasse 16, | 6312 | Steinhausen | Steinhausen | Suiza | Mayorista | | 01/07/2020 | | |
| 860 | APOLO GAS ENERGIA, S.L | B22928089 | C. Cuadra Saboner Ctr, 138 | 12006 | Castellón de la Plana | Castellón | España | | 900801215 | 01/02/2026 | | |
| 564 | ARCELORMITTAL ENERGY S.C.A. | N0187867G | 24-26 Boulevard d'Avranches, | L-1160 | Luxemburgo | Luxemburgo | Luxemburgo | | | 01/01/2016 | | |
| 603 | ARSUS ENERGIA, S.L. | B90053232 | C/ Juan Olivert,9 | 41309 | La Rinconada | Sevilla | España | | | 20/11/2016 | | |
| 737 | AS ENERGY ELECTRICIDAD Y GAS, S.A. | A42785949 | Avda América nº18 | 28028 | Madrid | Madrid | España | | 900 303 100 | 01/04/2021 | | |
| 813 | ASMAD TRADING, S.L.U | B56806342 | Poeta Joan Maragall, 56 9º H, 28020 Madrid | 28020 | Madrid | Madrid | España | | 900834955 | 25/03/2024 | 01/12/2025 | Baja |
| 874 | ATELIER SELECT GAS, S.L. | B26742429 | C/ Hiedra, nº9 | 28109 | Alcobendas | Madrid | España | Mayorista | | 16/03/2026 | | |
| 664 | ATLANTICO GAS NATURAL, S.L. | B76337914 | C/ Fraternidad, 1, | 38108 | San Cristóbal de la Laguna | Tenerife | España | | 900 929 282 | 01/06/2019 | | |
| 843 | ATLAS ENERGY DESIGNATED ACTIVITY COMPANY | IE4257005IH | 32 Molesworth Street | D02 Y512 | Dublín | Leinster | Irlanda | Mayorista | | 01/06/2025 | | |
| 503 | AUDAX ENERGÍA, S.A. | A85258549 | | | | | | | | 01/03/2013 | 31/12/2019 | Baja |
| 654 | AUDAX RENOVABLES, S.A. | A62338827 | C/ Electrónica nº 19, planta 7, puerta C | 08915 | Badalona | Barcelona | España | | 900 828 006 | 01/12/2018 | | |
| 585 | AURA ENERGÍA S.L. | B65552432 | Avda. Barcelona 109, 3ª Planta | 8970 | Sant Joan Despí | Barcelona | España | | | 30/04/2016 | 10/01/2022 | Baja |
| 685 | AUSARTA PRIMA SL. | B95868188 | Polígono Asuaran; Carretera Bilbao-Plentzia,17; Edificio Asua, plant 1ªy2ª | 48950 | Erandio | Bizkaia | España | | 800 760 065 | 01/03/2020 | | |
| 763 | AVANCES Y GESTIONES CARMAL S.L. | B88318159 | Calle Encomienda de Palacios, 142 | 28030 | Madrid | Madrid | España | | 900 109 103 | 01/02/2022 | 24/10/2023 | Baja |
| 770 | AVENIR SUPPLY AND TRADING LIMITED | GB410064848 | 3rd Floor 41-44 Great Queen Street | WC2B 5AD | Londres | Londres | Reino Unido | Mayorista | | 01/09/2023 | | |
| 788 | AXEGAZ TRADING AND TECHNOLOGIES, S.A.S. | N0259460D | Calle Córcega, 282, 1º 1º | 08008 | Barcelona | | ESPAÑA | Mayorista | | 01/03/2023 | | |
| 505 | AXEGAZ, S.A.S | 75237793700020 | | | | | | | | 01/05/2013 | 21/01/2019 | Baja |
| 49 | AXPO IBERIA, S.L. | B83160994 | Paseo de la Castellana, 95;pl 20 | 28046 | Madrid | Madrid | España | | 900 101 311 | | | |
| 731 | Alas Energy Gas S.L. | B01839398 | CN-340 Pk 1122 C.P.:43890 L'Hospitalet de l'Infant, | 43890 | L'Hospitalet de l'Infant | Tarragona | España | | 900 153 476 | 01/06/2021 | 02/10/2023 | Baja |
| 781 | Aluz Energía Eléctrica, SL | B42747873 | Calle Trole, N16, 2º | 28031 | Madrid | Madrid | España | | 900 377 567 | 15/12/2022 | | |
| 41 | BAHIA DE BIZKAIA ELECTRICIDAD, S.L. | B48969877 | Apdo de correos nº 10 | 48580 | Abanto y Zierbena | Bizkaia | España | | | | | |
| 827 | BARMALGAS GMBH | N0277962G | Hohenzollerndamm 120 | 14199 | Berlin | Berlin | Alemania | Mayorista | | 05/08/2024 | | |
| 60 | BASER COMERCIALIZADORA DE REFERENCIA, S.A | A74251836 | Plaza de los ferroviarios Asturianos, 1 | 33012 | Oviedo | Oviedo | España | | 900 902 947 | | | |
| 669 | BB ENERGY TRADING LIMITED | GB805688210 | 12-14 Ansdell Street, | W8 5BN | Londres | Londres | Reino Unido | Mayorista | | 01/12/2020 | 03/04/2021 | Baja |
| 693 | BDGAS ENERGIA 2018, S.L. | B44532513 | Avenida Pais Valencia, 55: Entresuelo-3 | 12200 | Onda | Castellón | España | | 900 445 198 | 01/05/2020 | | |
| 807 | BEROIL ENERGIA ELÉCTRICA, S.L. | B09607144 | CTRA. Madrid-Irun KM 247 | 09199 | Rubena | Burgos | España | | 900 10 90 49 | 01/02/2024 | | |
| 560 | BETA RENOWABLE GROUP SA | A33985540 | | | | | | | | 21/07/2015 | 28/11/2018 | Baja |
| 892 | BGN S.A. | CHE355326783 | Rue Henriette-et-Jeanne RATH 12 | 1204 | GINEBRA | GINEBRA | SUIZA | MAYORISTA | | | | |
| 736 | BIOGAS UPGRADED S.L. | B02699072 | Calle Orense, número 68, piso 2, puerta D | 28020 | Madrid | Madrid | España | Mayorista | | 01/07/2023 | 01/08/2023 | Baja |
| 547 | BIROU GAS S.L. | B39806062 | Calle Calvo Sotelo, número 19, piso 2º, oficina 4ª | 39002 | Santander | Cantabria | España | | | 30/10/2014 | | |
| 662 | BIZKAIA ENERGIA S.L.U. | b48948830 | Pol.Industrial Boroa,Insula AI-1 | 48340 | Amorebieta-Etxano | Bizkaia | España | | 900 102 165 | 01/07/2019 | | |
| 804 | BLUE ATLÁNTICA ENERGY IBERIA, S.A. | A10896009 | AVDA Diagonal Nº463 Bloque BIS Planta 9 Puerta 2 | 08036 | BARCELONA | BARCELONA | ESPAÑA | | 900834955 | 01/03/2025 | | |
| 718 | BLUEGREEN ENERGY SPAIN, S.L | B01787621 | C/Diagonal, 458 - 8ª planta | 8006 | Barcelona | Barcelona | España | | 800 000 264 | 31/01/2021 | 03/04/2021 | Baja |
| 726 | BON PREU, S.A.U. | A08665838 | Carretera C-17, km 73 | 08508 | Masies de Voltregà, Les | Barcelona | España | | 900 500 005 | 1/01/2021 | | |
| 801 | BP ENERGÍA ESPAÑA SA | A28135846 | PGIND El Serrallo, S/N | 12100 | CASTELLÓ DE LA PLANA | CASTELLÓN | España | | 900834955 | 01/11/2023 | | |
| 5 | BP GAS&POWER IBERÍA, S.A.U. | A82422031 | C/ Quintanadueñas nº 6 (Edificio Arqborea) | 28050 | Arroyo de la Vega: Alcobendas | Madrid | España | | 900 100 520 | | | |
| 790 | BRIGHTFIELD TRADING B.V | NL813532358B01 | Croeselaan Nº18 | 3521CB | Utrecht | Utrecht | Países Bajos (Los) | Mayorista | | 01/09/2023 | | |
| 752 | BUTIK ENERGIA, S.L. | B02702561 | Calle José Echegaray 1 | 28232 | Las Rozas | Madrid | España | | 900 52 57 04 | 01/10/2021 | 05/12/2023 | Baja |
| 740 | CALORÍFICA DOMÉSTICA S.L. | B82488842 | Avda. Constitución, 2 | 28850 | Torrejón de Ardoz | Madrid | España | | 900 813 648 | 01/06/2021 | | |
| 675 | CANDELA COMERCIALIZADORA S.L | B88323175 | C/Cardenal Marcelo Spínola 4,1d | 28016 | Madrid | Madrid | España | | 900 525 975 | 01/09/2019 | | |
| 86 | CAPITAL ENERGY READ, S.L. | B84594340 | Paseo del Peru 66B; | 28707 | S.S. de los Reyes | Madrid | España | Mayorista | | 15/02/2021 | | |
| 824 | CAPWATT COMERCIAL, S.L.U. | B87492583 | C/ Ulises 16, 4ª planta, 28043, Madrid | 28043 | Madrid | Madrid | España | | 900 103 094 | 15/07/2024 | | |
| 562 | CAPWATT SUPPLY & TRADING, S.L. | B87370771 | CALLE ULISES, NUM 16 PLANTA 4 | 28043 | Madrid | Madrid | España | Mayorista | | 21/09/2015 | | |
| 694 | CASTLETON COMMODITIES MERCHANT EUROPE S.a.r.l | CHE387939524MWST | Rue dItalie 10 succursale de Ginebra | 1204 | Ginebra | Ginebra | Suiza | Mayorista | | 01/04/2020 | | |
| 518 | CATGAS ENERGIA, S.A. | A61293387 | Avinguda Generalitat, 5-3º | 8924 | Santa Coloma de Gramanet | Barcelona | España | | 900 49 43 08 | 01/07/2014 | | |
| 598 | CENTRICA ENERGY LIMITED | GB684966762GB | Millstream, Maidenhead Road, | SL4 5GD | Berkshine | Berkshine | Reino Unido | Mayorista | | 02/07/2016 | | |
| 602 | CENTRICA ENERGY TRADING, S.A. | DK20293195 | Skelagervej 1, | 9000 | Aalborg | Aalborg | Dinamarca | Mayorista | | 01/11/2016 | | |
| 565 | CENTRICA LNG COMPANY LIMITED | GB684966762 | Millstream, Maidenhead Road, | SL4 5GD | Berkshine | Berkshine | Reino Unido | Mayorista | | 02/07/2016 | | |
| 9 | CEPSA GAS COMERCIALIZADORA, S.A. | A82485335 | Torre Cepsa; Paseo de la Castellana, 259-A | 28046 | Madrid | Madrid | España | | 900 604 060 | | | |
| 868 | CERES ENERGY LIMITED | GB174743379 | Old Grammar School, Hallgate | NE46 1XD | Hexham | Northumberland | Inglaterra | MAYORISTA | | 01/12/2026 | | |
| 616 | CHCUATRO GAS COMERCIALIZADORA, S.L | B87771119 | C/Chile 10, Oficina 237 | 28290 | Las Rozas | Madrid | España | | 900 102 400 | 01/05/2017 | 6/02/2021 | Baja |
| 647 | CHENIERE MARKETING INTERNATIONAL LLP | GB217728594 | 3rd Floor, The Zig Zag Building, 70 Victoria Street | SW1E 6SQ | Londres | Londres | Reino Unido | Mayorista | | 01/01/2019 | | |
| 546 | CIBELES ENERGIA CENTURY21 GO, S.A.U | A87102703 | C/ Gamonal 25 | 28031 | Madrid | Madrid | España | | | 01/01/2015 | 31/12/2021 | Baja |
| 754 | CIDE HCENERGIA, S.A. | A74255282 | Poeta Joan Maragall, 1 Planta 3º SUR | 28020 | Madrid | Madrid | MADRID | | 900 373 272 | 30/10/2021 | | |
| 703 | CIMA ENERGÍA COMERCIALIZADORA, S.L. | B26558056 | Avenida de Portugal, 27 Planta 4 Prt. 8 | 26001 | Logroño | Logroño | España | | 900 730 130 | 02/06/2020 | | |
| 863 | CINETICA SOLUCIONES ENERGETICAS, S.L. | B22785828 | CL. LUIS BUÑUEL 2 | 28223 | PONZUELO DE ALARCON | MADRID | ESPAÑA | | 900 264 218 | 01/12/2025 | | |
| 884 | CITIGROUP GLOBAL MARKETS LIMITED | N0060313D | CITIGROUP CENTRE | E14 5LB | CANARY WHARF | LONDRES | REINO UNIDO | MAYORISTA | | 01/10/2026 | | |
| 750 | CLEARVIEW ENERGY S.L. | B88578901 | C/ Villalar 7, Bj. Izda | 28001 | Madrid | Madrid | España | | 900 423 239 | 01/09/2021 | | |
| 828 | CNOOC U.K. MARKETING LTD | GB406682003 | Prospect House, Oxford Road 97 | UB8 1LU | Uxbridge | London | Reino Unido | Mayorista | | 15/08/2024 | | |
| 821 | COBBLESTONE ENERGY DMCC | AE100491567200003 | Unit 1710 SABA 1 Tower, Cluster E, Jumeirah Lake Towers, Dubai, UAE | | Dubai | Dubai | Emiratos Árabes Unidos | Mayorista | | 14/06/2024 | | |
| 855 | COBBLESTONE ENERGY EUROPE LIMITED | IE4261847JH | The Masonry 151-156 Thomas Street | D08PY5E | Dublin | Leinster | Irlanda | Mayorista | | 01/01/2026 | | |
| 761 | COLABORA ENERGIA-ARGUS S.L. | B88110341 | c/Bañeza, 11 | 28029 | Madrid | Madrid | España | | 800007999 | 24/12/2021 | 28/08/2026 | Baja |
| 709 | COMERCIALIZADORA ADI ESPAÑA, S.L | B67580118 | AVDA De La Arruzafilla Nº 14 | 14011 | Córdoba | Córdoba | España | | 900 730 182 | 20/12/2022 | | |
| 686 | COMERCIALIZADORA DE ELECTRICIDAD Y GAS DEL MEDITERRÁNEO S.L. | B93506681 | Camino de Remanentes 2 1ºC | 29700 | Vélez Málaga | Malaga | España | | 900 696 556 | 01/07/2020 | | |
| 578 | COMERCIALIZADORA GONZALEZ ENERGÍA, S.L. | B87387296 | C/ Muguet 13 | 28044 | Madrid | Madrid | España | | | 09/12/2015 | | |
| 6 | COMERCIALIZADORA IBÉRICA DE GAS Y ENERGÍA ELÉCTRICA, S.A.U. | A82444464 | Edificio Cuzco III; Pº de la Castellana nº 137 Pl 14 | 28046 | Madrid | Madrid | España | | | | | |
| 52 | COMERCIALIZADORA REGULADA, GAS & POWER,S.A. | A65067332 | Avenida San Luis, 77 | 28033 | Madrid | Madrid | España | | 900 100 502 | | | |
| 785 | CONOCOPHILLIPS (U.K.) MARKETING AND TRADING LIMITED | 331469213 | 20th Floor, 1 Angel Court | EC2R 7HJ | London | London | Reino Unido | Mayorista | | 01/04/2023 | | |
| 660 | CORPORACIÓN ALIMENTARIA GUISSONA S.A. | A25445131 | C/Traspalau, 8 | 25210 | Guissona | Lleida | España | | 900 844 980 | 01/05/2019 | | |
| 618 | COX ENERGIA COMERCIALIZADORA ESPAÑA, S.L.U | B87166435 | C/Velázquez 4, 1º | 28001 | Madrid | Madrid | España | | 900 555 800 | 01/05/2017 | 31/01/2022 | Baja |
| 773 | CREAENERGIA ECO, S.L.U. | B67511865 | Calle Orense, nº68, 9º | 28020 | Madrid | Madrid | España | | 900 828 844 | 01/01/2023 | | |
| 556 | CRINGAS, S.L. | B13377676 | C/ Carril de las Palmeras,7-1º | 30002 | Murcia | Murcia | España | | | 20/03/2015 | 13/03/2026 | Baja |
| 829 | CRIOGENIA Y SERVICIOS, S.L. | B85728855 | CL SIERRA DE GATA, 20 28830, SAN FERNANDO DE HENARES, (MADRID) | 28830 | SAN FERNANDO DE HENARES | MADRID | ESPAÑA | | 900 433 172 | 01/01/2025 | | |
| 54 | CURENERGÍA COMERCIALIZADOR DE ÚLTIMO RECURSO, S.A.U. | A95554630 | Plaza Euskadi, 5 | 48009 | Bilbao | Bizkaia | España | | 800 760 719 | | | |
| 837 | CYCLE0 COMERCIALIZADORA, S.L. | B19459106 | PG/INDUSTRIAL BILDOSOLA PARCELA J-1 | 48142 | Artea | Bizkaia | España | Mayorista | | 10/03/2025 | | |
| 729 | CYE ENERGIA S.L. | B98516693 | Avda. Antonio Ferrandis, 8 Oficina K | 46013 | Valencia | Valencia | España | | 900 902 788 | 01/04/2025 | | |
| 888 | CYNERGY SOLUTIONS, S.L. | B88655345 | PI Pla de la Bruguera. Solsonès, 91-93 | 08211 | Castellar del Vallès | Barcelona | España | | 931310003 | 01/09/2026 | | |
| 563 | DANSKE COMMODITIES A/S | N0082590A | Vaerkmestergade 3,3, | 8000 | Aarhus C | Aarhus C | Dinamarca | Mayorista | | 01/10/2015 | | |
| 889 | DEE LUNA ENERGY, S.L. | B27683572 | Arriluzeaga 10B Bajo A | 48200 | Durango | Bizkaia | España | | 900732799
| 01/08/2026 | | |
| 753 | DESBALANCES DE GAS, S.L. | B05467238 | Calle Marqués de la Ahumada, 5 | 28028 | Madrid | Madrid | España | | 900377564 | 01/09/2021 | | |
| 590 | DEVAL PETROLEUM, S.L. | B98790041 | Ronda Narcís Monturiol y Estarriol 17; 2ª-desp17; Parque Tecnológico | 46980 | Paterna | Valencia | España | Mayorista | | 15/06/2016 | | |
| 648 | DISA ENERGY S.L.U. | B59979807 | C/ Alvaro Rodriguez Lopez 1 | 38003 | Santa Cruz de Tenerife | Santa Cruz de Tenerife | España | | 900 373 902 | 01/02/2019 | | |
| 712 | DISA PENÍNSULA, S.L.U. | B84070937 | C/Rio Bullaque 2 | 28034 | Madrid | Madrid | España | | 900 373 902 | 01/10/2020 | | |
| 539 | DOMESTICA GAS Y ELECTRICIDAD SLU | B99340564 | Avda. Cesar Augusto 30, 1º C/D | 5001 | Zaragoza | Zaragoza | España | | 800 678 900 | 25/08/2014 | | |
| 849 | DOUROGÁS COMERCIAL, S.A. | N0360661C | Rua 31 de Agosto nº12 | 5000-305 | Vila Real | Vila Real | Portugal | Mayorista | | 23/06/2025 | | |
| 659 | DOUROGÁS NATURAL - COMÉRCIO DE GÁS NATURAL E ENERGIA, S.A. | N0100433B | Rua 31 de Agosto, nº12 | 5000-305 | Vila Real | Vila Real | Portugal | Mayorista | | 01/04/2019 | | |
| 644 | DRK ENERGIA S.L. | B86863610 | C/Génova 25,1º | 28004 | Madrid | Madrid | España | | 900 901 336 | 01/10/2018 | | |
| 820 | DRW Energy Europe BV | NL865603595B01 | Locatellikade 1-Floor 76, 1076AZ | | | | Paises Bajos (Los) | Mayorista | | 15/05/2024 | | |
| 509 | DXT COMMODITIES, S.A. / (Sucursal en Portugal 980627320) | CHE105222146 | Via Trevano 2a / (Av. António Augusto de Aguiar 19) | 6900 / (1050012) | Lugano / (Lisboa) | Lugano / (Lisboa) | Suiza / (Suiza) | Mayorista | | 01/07/2013 // (01/11/2019) | | |
| 886 | DYNEFF ESPAÑA SL | B48503585 | MIGDIA, NUM. 37, 1ª PLANTA | 17002 | GIRONA | GIRONA | ESPAÑA | | 900109407 | 01/09/2026 | | |
| 719 | E100 International Trade Sp. z o.o. | PL5213745637 | Pory 78/7 | 02-757 | Warsaw | Warsaw | Polonia | | 900 192 857 | 01/02/2021 | 19/02/2021 | Baja |
| 830 | EBROENERGIA COMERCIALIZADORA, S.L. | B71398531 | C/ Monasterio de Fitero Nº2 | 31592 | Cintruenigo | Navarra | España | | 900 877 217 | 21/10/2024 | | |
| 794 | ECO TRADE S.R.L | IT03469240547 | Via Fratelli Cairoli snc - 06023 Gualdo Tadino (PG) – Italy | 06023 | Gualdo Tadino | Perugia | Italia | Mayorista | | 01/01/2024 | | |
| 809 | ECOCYCLE SERVICES, S.L. | B13931795 | CALLE MONTE ALBILLO, NUM 3 PLANTA LOC, PUERTA 1 | 28110 | Algete | Madrid | España | | 900834956 | 01/03/2025 | | |
| 680 | ECOLOGIA DE SERVICIOS INTEGRADOS S.L. | B99550006 | C/Francisco de Vitoria, 8 | 50008 | Zaragoza | Zaragoza | España | Mayorista | | 01/01/2020 | | |
| 47 | EDF TRADING LIMITED | GB735547907 | 80,Victoria Street 3rd floor | SW1E 5JL | London | London | Reino Unido | | | | | |
| 869 | EDISON NEXT GAS 360, S.L.U. | B86799590 | Calle Velázquez, 50, 2º piso | 28001 | Madrid | Madrid | España | | 900 70 10 94 | 01/10/2026 | | |
| 553 | EDISON_SPA | 826333014 | Foro Buonaparte, 31 | 20121 | Milano | Milano | Italia | Mayorista | | 01/07/2021 | | |
| 706 | EDP CLIENTES, S.A.U. | A74472911 | Plaza del Fresno 2 | 33007 | Oviedo | Asturias | España | | 900 907 005 | 25/07/2020 | | |
| 524 | EDP GEM Portugal, S.A | PT508202370 | C/Serrano Galvache,56; Edificio Encina Pl-4º | 28033 | Madrid | Madrid | España | Mayorista | | 01/03/2014 | | |
| 890 | EGNI SMART ENERGIES, S.L.
| B27524354 | Monte Ganeta 13, 3A | 48014 | Bilbao | Bizcaia | España | | 900732815
| 01/08/2026 | | |
| 798 | EKHINEO ENERGÍA, S.L | B13977129 | Calle Buenos Aires, 28 BAJO ESC. 5 | 50180 | Utebo | Zaragoza | España | | 900 767675 | 30/10/2023 | | |
| 852 | EKILUZ ENERGÍA COMERCIALIZADORA, S.L. | B75229369 | C/ Isabel Torres 19 | 39011 | Santander | Cantabria | España | | 900293741 | 07/10/2025 | | |
| 793 | ELECTRA CALDENSE ENERGÍA, S.A. | A62420815 | Pl Catalunya, Num. 6, 08140 Caldes De Montbui - (Barcelona) | 08140 | Caldes De Montbui | Barcelona | España | | 900181776 | 01/09/2023 | | |
| 651 | ELECTRICA DE GUIXES ENERGIA, S.L | B25780800 | Plaça del Mercat, 2 | 8261 | Cardona | Córdoba | España | | 900 101 605 | 30/10/2018 | | |
| 710 | ELECTRICIDAD ELEIA S.L.U | B88181441 | C/Cardenal Marcelo Spinola, 10 | 28017 | Madrid | Madrid | España | | 900 103 333 | 03/11/2020 | | |
| 746 | ELECTROROUTE ENERGY TRADING LIMITED | N0073616E | Market House, Market Square, Letterkenny, Co. Donegal | F92 C92T | Letterkenny | Donegal | Irlanda | Mayorista | | 01/06/2021 | | |
| 594 | ELEGRAND ENERGIA S.L | B19300334 | | | | | | | | 01/07/2016 | 09/02/2018 | Baja |
| 670 | ELEMENT ALPHA S.A | CHE134825401 | 6 Rue Robert-Céard | 1204 | Ginebra | Ginebra | Suiza | Mayorista | | 01/11/2020 | | |
| 581 | ELEVA 2 COMERCIALIZADORA, S.L. | B98670763 | Avenida de Manoteras 46 bis, 2 planta | 28050 | Madrid | Madrid | España | | 900 828 550 | 1/03/2021 | | |
| 571 | ELYGAS POWER S.L | B98683378 | | | | | | | | 01/11/2015 | 08/10/2018 | Baja |
| 620 | EMASP Servicios de Valor Añadido, S.L | B71308910 | C/ Emilio Arrieta, 14-5ºC | 31002 | Pamplona | Pamplona | España | | | 06/07/2017 | | |
| 774 | EMAYA, EMPRESA MUNICIPAL D'AIGUES I CLAVEGUERAM, S.A. | A07000029 | C/ JOAN MARAGALL Nº3 | 07006 | Palma | Mallorca | España | | 900 533 692 | 01/10/2022 | | |
| 725 | EMPRESA MUNICIPAL DE TRANSPORTES DE MADRID, S.A. | A28046316 | C/Cerro de la plata 4 | 28007 | Madrid | Madrid | España | | 900 885 172 | 01/04/2021 | 25/11/2024 | Baja |
| 635 | ENARA GESTIÓN Y MEDIACIÓN, S.L. | B85778041 | | | | | | | | 21/12/2017 | 27/06/2018 | Baja |
| 7 | ENDESA ENERGÍA, S.A.U. | A81948077 | C/ Ribera del Loira, 60 | 28042 | Madrid | Madrid | España | | 800 760 909 | | | |
| 577 | ENDESA GENERACION SAU | A82434697 | | | | | | | | 04/12/2015 | 01/01/2019 | Baja |
| 727 | ENELUZ 2025, S.L. | B19505049 | MARQUES DE VILLAMAGNA, 3 Planta 5 | 28001 | Madrid | Madrid | España | | 900 834 996 | 1/12/2020 | 14/02/2022 | Baja |
| 589 | ENERCOTEC_SERVICIOS | B27772987 | | | | | | | | 01/01/2017 | 05/12/2018 | Baja |
| 771 | ENERGETECH EUROPE BV | NL862512396B01 | Office Unit 1.05, Sloterdijk, Teleportboulevard 124-130 | 1043EJ | Ámsterdam | Holanda del Norte | Países Bajos | Mayorista | | 01/11/2022 | | |
| 638 | ENERGIA COLECTIVA, S.L. | B98670003 | C/Don Juan de Austria 28,Puerta3-4 | 46002 | Valencia | Valencia | España | | | 23/07/2018 | | |
| 677 | ENERGIA NUFRI S.L.U | B25821356 | Carretera de palau KM1, | 25230 | Mollerussa | Lleida | España | | 900 103 018 | 01/12/2019 | | |
| 756 | ENERGIAS RENOVABLES MAPEAL, S.L. | B06815450 | Poeta Verdaguer, 1 | 12002 | Castellón | Castellón | España | Mayorista | | 15/10/2021 | | |
| 697 | ENERGREEN MOBILITY S.L . | B88424445 | C/Julio Palacios, 12, | 28914 | Leganes | Madrid | España | | 900 475 290 | 01/11/2020 | | |
| 861 | ENERGY PLUS IBERIA, S.L. | B13772090 | CL San Andrés 67 ent | 15003 | A Coruña | A Coruña | España | | 900 901 717 | 01/12/2025 | | |
| 552 | ENERGY STROM XXI, S.L. | B66040312 | C/ Marconi 5 | 8210 | Barberá del Vallés | Barcelona | España | | | 15/01/2015 | | |
| 38 | ENERGYA VM GESTION DE ENERGIA, S.L.U | B83393066 | CALLE FEDERICO MOMPOU Nº 5 | 28050 | Madrid | Madrid | España | | 900 306 130 | 11/01/2005 | | |
| 657 | ENERGYEXPERIENCE ITALIA SRL | IT02943640215 | Via dei Vanga 11 | 39100 | Bolzano | Bolzano | Italia | Mayorista | | 01/03/2019 | | |
| 817 | ENERGYSAVE PROJECTS S.L. | B87152286 | Avenida de Leonardo Da Vinci, 8, Edificio Alaja, Oficina 236 | 28906 | Getafe | Madrid | España | | 800009008 | 01/05/2024 | | |
| 723 | ENERGÍA ECOLÓGICA ECONÓMICA, S.L. | B01620160 | Calle electrónica, Nº 19 Planta 7 Puerta C | 08915 | Badalona | Barcelona | España | | 900 730 304 | 01/01/2021 | | |
| 59 | ENERGÍA XXI COMERCIALIZADORA DE REFERENCIA, S.L. | B82846825 | C/ Ribera del Loira, 6 | 28042 | Madrid | Madrid | España | | 800 760 333 | | | |
| 576 | ENERKIA ENERGIA SL | B66589904 | | | | | | | | 01/12/2015 | 28/11/2019 | Baja |
| 608 | ENERPLUS ENERGIA, S.A. | A56005903 | Carretera Nacional 331, Km 82,6 | 14900 | Lucena | Córdoba | España | | | 01/04/2017 | | |
| 572 | ENERXIA GALEGA MAIS, S.L. | B27266279 | C/ Doctor Cadaval, 3-3º | 36202 | Vigo | Pontevedra | España | | | 01/11/2015 | | |
| 692 | ENET ENERGY S.A. | CHE273382767TVA | Via San Gottardo, 10 | 6900 | Lugano | Lugano | Suiza | Mayorista | | 01/07/2020 | | |
| 32 | ENGIE ESPAÑA, S.L | B82508441 | C/ Ribera del Loira, 28 | 28042 | Madrid | Madrid | España | | 900 866 301 | | | |
| 523 | ENGIE GLOBAL MARKETS | FR15437982937 | 1 Place Samuel de Champlain | 92930 | Paris La Défense | Paris | Francia | Mayorista | | 01/05/2014 | | |
| 520 | ENGIE, S.A. | FR13542107651 | 1 Place Samuel de Champlain | 92930 | Paris La Défense | Paris | Francia | Mayorista | | 10/02/2014 | | |
| 528 | ENGIE_ENERGY_MANAGEMENT_SCRL_(SUCURSAL_EN_FRA) | FR93790296081 | | | | | | | | 10/02/2014 | 22/03/2019 | Baja |
| 10 | ENI ESPAÑA COMERCIALIZADORA DE GAS S.A. | A82539594 | Calle Vía de los poblados 1. PE Alvento | 28033 | Madrid | Madrid | España | | 900 300 200 | | | |
| 711 | ENI GLOBAL ENERGY MARKETS S.p.A. | IT11076280962 | Piazzale Ezio Vanoni, 1 | 20097 | San Donato Milanese | Milan | Italia | Mayorista | | 01/01/2021 | | |
| 537 | ENI PLENITUDE IBERIA, S.L.U. | B39793294 | Calle Albert Einstein, 20 PCTCAN | 39011 | Santander | Cantabria | España | | 911334888 | 27/08/2014 | | |
| 93 | ENI SPA | IT00905811006 | Piazza Vanoni 1 | 20097 | San Donato Milanese | Milan | Italia | | | 06/06/2012 | | |
| 521 | ENI TRADING & SHIPPING, S.p.A. | IT09598861004 | 123 Buckingham Palace Road, | SW1W 9SL | London | London | Reino Unido | Mayorista | | 29/01/2014 | 01/01/2021 | Baja |
| 521 | ENI TRADING & SHIPPING, S.p.A. (Sucursal en Bélgica) | BE0896716795 | Guimardstraat 1A,Rue Guimard | 1040 | Bruselas | Bruselas | Belgica | Mayorista | | 01/10/2014 | 1/01/2021 | Baja |
| 877 | ENILIVE S.P.A. | IT11403240960 | Viale Giorgio Ribotta, 51 | 00144 | Roma | Roma | Italia | Mayorista | | 01/10/2026 | | |
| 62 | ENOI SPA | 13107250154 | Piazza Elenora Duse 2, | 20122 | Milan | Milan | Italia | | | 26/01/2010 | 20/02/2023 | Baja |
| 597 | ENSTROGA, S.L. | B57903825 | Avda Meridiana 27-29; 6ª planta | 8018 | Barcelona | Barcelona | España | | | 21/07/2016 | | |
| 864 | ENUCA COMERCIALIZADORA, S.L. | B56989296 | calle Cardenal Marcelo Spínola 4, 1D | 28016 | Madrid | Madrid | España | | 900 060 223 | 16/02/2026 | | |
| 887 | EPSILON ENERGIAS LIMPIAS SL | B56988470 | CRONOS 8 , 3ª PLANTA | 28037 | MADRID | MADRID
| ESPAÑA | MAYORISTA | | 25/07/2026 | | |
| 81 | EQUINOR, ASA | 923609016MVA | Forusbeen, 50 | 4033 | Stavanger | Stavanger | Noruega | Mayorista | | 14/09/2011 | | |
| 755 | ESTUDIO GAS TRADE, SOCIEDAD LIMITADA | B05483003 | MARIA DE MOLINA, 39 | 28006 | Madrid | Madrid | España | | 900834955 | 01/01/2022 | 31/10/2023 | Baja |
| 875 | ETER ENERGIA GAS, S.L. | B26728261 | C/ Río Záncara, S/N | 06230 | Los Santos de Maimona | Badajoz | España | Mayorista | 924 940 947 | 13/03/2026 | | |
| 543 | EURO GAS HOLDING, A.S. | CZ01850181 | | | | | | | | 10/05/2013 | 14/07/2017 | Baja |
| 769 | EUROPEAN ENERGY POOLING | N0110945C | Korte Keppestraat 7/32B | 9320 | Erembodegem | | Bélgica | Mayorista | - | 01/08/2022 | | |
| 778 | EVOLVE ENERGIA, SL | B88630512 | C/ Pablo Freire, 10 bj (Leganés) | 28918 | Madrid | Madrid | España | | 900 264 537 | 01/12/2022 | 01/12/2022 | Baja |
| 699 | EXXONMOBIL GAS MARKETING EUROPE LIMITED | GB239088635 | Ermyn House, Ermyn Way | KT22 8UX | Leatherhead | Surrey | Reino Unido | Mayorista | | 01/11/2020 | | |
| 558 | FACTOR ENERGIA ESPAÑA, S.A. | A62943600 | C/Orense 68, 9º izq | 28020 | Madrid | Madrid | España | | | 01/07/2015 | | |
| 82 | FACTOR ENERGÍA, S.A. | A61893871 | Avda Diagonal, num 575 Bloque II, Planta 2 Edificio La Illa | 08029 | Barcelona | Barcelona | España | | | 01/11/2011 | | |
| 850 | FASTLIGHT, S.L. | B19766799 | calle Nanclares de Oca 5 | 28022 | Madrid | Madrid | España | | 900926161 | 25/07/2025 | | |
| 527 | FENIE ENERGIA, S.A. | A85908036 | Calle Alsasua, Nº 20 | 28023 | Madrid | Madrid | Madrid | | 900 215 470 | 01/12/2014 | | |
| 66 | FERTIBERIA, S.A. | A28165298 | Pº de la Castellana 259 D, pl 47 | 28046 | Madrid | Madrid | España | | | 16/03/2010 | | |
| 643 | FOENER ENERGÍA S.L. | B98563356 | Carretera Real Madrid KM 81-83 | 46469 | Beniparrell | Valencia | España | | 900 101 859 | 01/01/2019 | | |
| 68 | FORTIA ENERGIA S.L. | B85228138 | Gregorio Benitez 3 B | 28043 | Madrid | Madrid | España | | 900 367 842 | 01/01/2021 | | |
| 634 | FOX ENERGIA, S.A | A54855093 | Avda. Alcalde Lorenzo Carbonell 18 | 3114 | Alicante | Alicante | España | | 900 83 49 44 | 01/12/2017 | | |
| 682 | FREEPOINT COMMODITIES B.V. | GB115163840 | 62 Buckingham Gate | SWE1E 6AJ | Londres | Londres | Reino Unido | Mayorista | | 17/02/2020 | | |
| 859 | FUSE ENERGY IBERICA, S.L. | B75274035 | Calle Velázquez, 113, 7ºE | 28006 | Madrid | Madrid | España | | +34 900 869 712 | 01/01/2027 | | |
| 595 | FUSIONA COMERCIALIZADORA, S.A. | A87414934 | C/ Basauri 17 | 28023 | Madrid | Madrid | España | | | 22/06/2016 | | |
| 555 | FUSIONA SOLUCIONES ENERGÉTICAS, S.A | A85818797 | C/ Basauri,17, Edif.B,Planta baja-Ofic.C | 28023 | Madrid | Madrid | España | | | 01/03/2015 | 11/02/2022 | Baja |
| 835 | GALAPAGO ENERGIA, S.L.U. | B13970926 | RAMON TURRO, 202 | 08005 | BARCELONA | BARCELONA | ESPAÑA | | 900 861 744 | 01/01/2025 | | |
| 48 | GALP ENERGÍA ESPAÑA, S.A.U. | A28559573 | Edif. Vega Norte I; C/ Anabel Segura 16 | 28108 | (Arroyo de la Vega) Alcobendas | Madrid | España | | 900 101 744 | | | |
| 516 | GALP GAS NATURAL, S.A. | 503103616 | R. Tomás da Fonseca, Torre C | 1600209 | Lisboa | Lisboa | Portugal | Mayorista | | 01/02/2014 | | |
| 671 | GAOLANIA SERVICIOS S.L. | B98717457 | C/ PASCUAL Y GENIS 20, 5 | 46002 | Valencia | Valencia | España | | 900 535 689 | 01/10/2019 | | |
| 687 | GARCIA MUNTE ENERGIA, S.L. | B61474540 | C/Selva 12 | 8820 | El Prat De Llobregat | Barcelona | España | | 900 103 725 | 01/05/2020 | | |
| 872 | GAS AND VATS, S.L. | B24986689 | c/ Príncipe de Vergara, 109, 2ª planta | 28002 | Madrid | Madrid | España | Mayorista | | 15/09/2026 | | |
| 513 | GAS MARINE BUNKER, S.L. | B51030278 | | | | | | | | 01/10/2013 | 04/10/2018 | Baja |
| 639 | GAS MARINE LNG, S.L. | B51037620 | C/ Pedro de Valdivia 1 bajo drch. | 52002 | Ceuta | Ceuta | España | | | 01/12/2018 | 1/02/2021 | Baja |
| 1 | GAS NATURAL COMERCIALIZADORA, S.A. | A61797536 | Avda. América, 38 | 28028 | Madrid | Madrid | España | | 900 100 264 | | | |
| 512 | GAS NATURAL EUROPE, S.A.S | FR28477977755 | 20 Avenue André Prothin | 92400 | Courbevoie | Courbevoie | Francia | Mayorista | | 01/02/2017 | | |
| 823 | GAS4LIFE ENERGY, S.L. | B56968696 | Paseo de la Castellana 200 | 28046 | Madrid | Madrid | España | | 900835729 | 01/08/2024 | | |
| 500 | GASELA_GMBH | ATU67292404 | | | | | | | | 10/12/2012 | 11/08/2019 | Baja |
| 695 | GASILUZ ECO ENERCIA, S.L. | B70609136 | Alcalde Electo Carballo, 46 | 15174 | Cullero | A Coruña | España | | 900 815 014 | 01/05/2020 | | |
| 80 | GASINDUR, S.L. | B34041400 | C/ Hidrógeno nº13 | 47012 | Valladolid | Valladolid | España | | 900 404 045 | 06/06/2011 | | |
| 878 | GASREN COMERCIALIZADORA, S. L. | B26899625 | PASEO DE LAS DELICIAS, 30, 4ª PLANTA | 28045 | MADRID | MADRID | ESPAÑA | MAYORISTA | | 01/01/2027 | | |
| 836 | GASUM OY | FI09698193 | Revontulenpuisto 2C | 02100 | Espoo | Región capital | Finlandia | Mayorista | | 01/06/2025 | | |
| 606 | GEO ALTERNATIVA, S.L. | B87382644 | Avenida de Burgos,16E-1º | 28036 | Madrid | Madrid | España | | 900 831 656 | 16/12/2016 | | |
| 802 | GEO LUZ Y GAS SLU | B56193790 | Calle La Alhondiga Nº 24 | 38410 | Realejos, Los | Santa Cruz de Tenerife | España | | 900 693 358 | 01/01/2024 | 01/10/2024 | Baja |
| 636 | GESTERNOVA, S.A. | A84337849 | Paseo de la Castellana, 259 C | 28046 | Madrid | Madrid | España | | 900 37 31 05 | 26/01/2018 | | |
| 652 | GESTINER INGENIEROS, S.L | B82410549 | C/ Fuencarral 5, 1D | 28004 | Madrid | Madrid | España | | 900 902 886 | 01/02/2019 | | |
| 607 | GLENCORE ENERGY UK Ltd | N0067119H | 18 Hanover Square | W1S 1JY | Londres | Londres | Reino Unido | Mayorista | | 01/05/2017 | | |
| 743 | GLOBELIGHT ENERGY S.L. | B19318401 | Calle Castilla-León, 20 | 12200 | Onda | Castellón | España | | 900 622 132 | 01/05/2021 | | |
| 544 | GNERA ENERGÍA Y TECNOLOGÍA, S.L. | B84196997 | Parque Norte,Serrano Galvache 56, Edificio Abedul, planta 7 | 28033 | Madrid | Madrid | España | | | 01/01/2015 | 1/01/2021 | Baja |
| 676 | GOG IBERIA S.L | b88140132 | C/Claudio Coello 74, 4ª Planta | 28001 | Madrid | Madrid | España | | 900 900 129 | 01/12/2019 | | |
| 98 | GOLD ENERGY-Comercializadora de Energía, S.A. | 507857542 | Rua 31 de Agosto, nº 12, | 5000-305 | Vila Real | Vila Real | Portugal | | | 17/10/2012 | | |
| 559 | GOLDMAN SACHS INTERNATIONAL | 9367000852 | Plumtree Court , 25 Shoe Lane | EC4A 2BB | London | London | Reino Unido | Mayorista | | 08/07/2015 | | |
| 834 | GREEN ENERGY 360, S.L. | B19802305 | Avenida Menéndez Pelayo, Num 67, Planta L0, Puerta 7 | 28009 | MADRID | MADRID | España | | 900903750 | 01/12/2024 | | |
| 672 | GREEN GAS AND KILOVATS, S.L. | B88394366 | Paseo castellana 134, 1º Izq. 28046 Madrid | 28046 | Madrid | Madrid | España | | 900 877 029 | 15/09/2019 | 18/09/2022 | Baja |
| 655 | GRIÑO GAS S.L. | B88211966 | Plaza Sant Joan, nº 10 | 25007 | Lérida | Lérida | España | Mayorista | 900 423 863 | 01/02/2019 | | |
| 787 | GULANS ENERGY, S.R.O | CZ02894254 | Ostrovni 126/30 | 1110 00 | | Praga | República Checa | Mayorista | | 28/02/2023 | | |
| 72 | GUNVOR INTERNATIONAL B.V (VAT: NL818096731B01) / (Sucursal en Suiza CHE181900362TVA) | N0036358J | 80-84 Rue du Rhone | 1204 | Geneva | Geneva | Suiza | Mayorista | | 16/04/2013 / (01/11/2014) | | |
| 796 | GUNVOR MARKETING (ESPAñA) SL | B88389762 | PLAZA PABLO RUIZ PICASSO N1 PLANTA 14-MODULO A | 28020 | Madrid | Madrid | España | | 900 105 300 | 01/12/2023 | | |
| 810 | Goldman Sachs Paris Inc. et Cie | FR17342131547 | 85 avenue Marceau, 75116 París (Francia) | 75116 | París | París | Francia | Mayorista | | 26/01/2024 | | |
| 799 | HALLIWELL ENERGÍA, S.L | B01688647 | C/ Francisco Silvela 44, 1ºD | 28028 | Madrid | Madrid | España | | 900264804 | 01/02/2024 | 26/05/2025 | Baja |
| 688 | HANWHA ENERGY RETAIL SPAIN S.L.U. | B88480330 | C/Gran Via, 4 | 28013 | Madrid | Madrid | España | | 900 202 900 | 31/03/2020 | | |
| 891 | HAVEL TRADING S.A | CHE283433076IVA | Rue du Marché 20 | 1204 | Genève (Ginebra) | Genève (Ginebra) | Suiza | Mayorista | | 01/11/2026 | | |
| 717 | HELIOELEC ENERGIA ELECTRICA Y GAS S.L. | B42555284 | C/ Las palomas S/n | 03190 | Pilar De La Horadada | Alicante | España | | 900 831 667 | 30/09/2020 | 22/01/2022 | Baja |
| 733 | HENARENERGIA S.L. | B19317304 | AVENIDA REYES MAGOS Nº8 LOCAL 1 | 28806 | Alcalá de Henares | Madrid | España | | 900 101 582 | 19/02/2021 | | |
| 822 | HEYCO ENERGY IBERIA S.L. | B16898041 | C/ Velazquez 11 - 3º Izda 28001 - Madrid | 28001 | Madrid | Madrid | España | Mayorista | 919178357 | 22/07/2024 | | |
| 842 | HEYGAZ SPAIN, S.L. | B42807578 | CALLE CASTELLÓ, NUM 128 PLANTA 1, PUERTA IZQ | 28006 | Madrid | Madrid | España | | 900658429 | 01/04/2026 | | |
| 663 | HIDROELECTRICA DEL VALIRA, S.L. | B25365180 | Paseo Joan Brudieu, 17 | 25700 | Seu d'Urgell | Leida | España | | 900 373 884 | 01/07/2019 | | |
| 865 | HISPAGÁS ENERGÍA, S.L | B23900467 | Calle Viriato nº53 | 28010 | Madrid | Madrid | España | MAYORISTA | | 30/01/2026 | | |
| 89 | HOLALUZ-CLIDOM, S.A. | A65445033 | Paseo Juan de Borbón,99-101, 4ªPt | 8039 | Barcelona | Barcelona | España | | 900 670 707 | 01/03/2012 | | |
| 791 | HORECA ENERGIA, SL | B87034617 | GAMONAL 25, 28031 Madrid | 28031 | Madrid | Madrid | España | | 900844141 | 01/06/2023 | | |
| 621 | HORIZON GAS COMERCIALIZADORA, S.L | B87829255 | C/Mauricio Legendre 16 | 28046 | Madrid | Madrid | España | | | 01/10/2026 | | |
| 806 | HYNOLOGY GEA, S.L | B67842419 | Av del Descubrimiento, Parc 5-4 Nave 1 Dcha P.I. Oeste, 30820 Alcantarilla, Murcia | 30394 | Cartagena | Murcia | España | | 900264836 | 01/02/2024 | | |
| 716 | IBERCOEN ENERGIA S.A. | A93576502 | Plaza Murillo Carreras 2 Atico | 29002 | Malaga | | España | | 900 90 10 94 | 1/01/2021 | 13/04/2022 | Baja |
| 529 | IBERDROLA CLIENTES, S.A.U | A95758389 | Plaza Euskadi, 5, | 48009 | Bilbao | Bizkaia | España | | | 26/04/2014 | | |
| 530 | IBERDROLA ENERGÍA ESPAÑA, S.A.U. | A95758371 | Plaza Euskadi, 5, | 48009 | Bilbao | Bizkaia | España | | | 26/04/2014 | | |
| 53 | IBERDROLA GENERACIÓN, S.A.U. | A95075586 | Plaza Euskadi, 5 | 48009 | Bilbao | Bizkaia | España | | 944151411 | 21/05/2009 | 03/04/2021 | Baja |
| 31 | IBERDROLA, S.A. | A48010615 | Plaza Euskadi, 5 | 48009 | Bilbao | Bizkaia | España | | | 29/03/2003 | 03/04/2021 | Baja |
| 613 | IBERELÉCTRICA COMERCIALIZADORA, S.L | B90037243 | C/José Vázquez Carmona,1Local | 41620 | Marchena | Sevilla | España | | | 01/05/2017 | | |
| 724 | IBERRED SOLUTIONS SL | B55323091 | Avenida Passapera, 17 – planta 2, puerta 4, | 17310 | Lloret de Mar | Gerona | España | | 900 831 214 | 01/01/2021 | 3/10/2021 | Baja |
| 876 | ICOSIUM ENERGY, S.L. | B26766170 | Plaza de Lealtad, 4, 7ª planta | 28014 | Madrid | Madrid | España | Mayorista | | 13/03/2026 | | |
| 570 | IGNIS ENERGIA, S.L. | B87290805 | C/Cardenal Marcelo Spinola,8;1 | 28016 | Madrid | Madrid | España | | | 01/11/2015 | | |
| 777 | IN COMMODITIES A/S | DK38381954 | Tangen, 6 | 8200 | Aarhus | | Dinamarca | Mayorista | | 17/10/2022 | | |
| 867 | INEOS ENERGY TRADING EUROPE | BE1012244587 | Rue Ransbeek 310 | 1120 | Bruselas | Bruselas | Bélgica | MAYORISTA | | 01/06/2026 | | |
| 579 | INER ENERGIA CASTILLA-LA MANCHA, S.L | B02494375 | C/Santiago Rusiñol 9, bajo | 2006 | Albacete | Albacete | España | | | 01/04/2016 | | |
| 28 | INGENIERÍA Y COMERCIALIZACIÓN DEL GAS, S.A | A73137788 | Edificio Hispania; Plaza Fuensanta,2 - 9ºA | 30008 | Murcia | Murcia | España | | 900 102 352 | | | |
| 568 | INSERIMOS ENERGÍA S.L. | B27779818 | C/Aragón, 22 Bajo | 36206 | Vigo | Pontevedra | España | | | 01/11/2015 | 08/11/2024 | Baja |
| 612 | INSIGNIA GAS, S.L | B98902810 | C/General San Martin 15, planta 3 | 46004 | Valencia | Valencia | España | | 900 802 145 | 21/05/2017 | 01/04/2022 | Baja |
| 573 | INTEGRACIÓN EUROPEA DE ENERGÍA, S.A.U. | A74340464 | C/ Dinamarca, 4; Polígono del Espíritu Santo | 33010 | Oviedo | Oviedo | España | | 800 808 208 | 21/12/2015 | | |
| 741 | INTELIGENCIA PARA EL AHORRO ENERGÉTICO | B13520069 | CALLE CURTIDORES 42 | 13170 | Miguelturra | Ciudad Real | España | | 800 007 695 | 08/06/2027 | | |
| 826 | INTERNACIONAL DE ALCOHOLES, S.A. | A13035266 | C/ Ávila, 6, 13700, Tomelloso, Ciudad Real | 13700 | Tomelloso | Ciudad Real | España | | 900 160 022 | 01/01/2025 | | |
| 40 | INVESTIGACIÓN, CRIOGENIA Y GAS, SA | A83092684 | | | | | | | | 03/09/2004 | 15/02/2017 | Baja |
| 653 | IRIS ENERGÍA EFICIENTE, S.A | A73987646 | C/ Extremadura, 15 bajo | 03300 | Orihuela | Alicante | España | | 900 834 463 | 27/11/2018 | | |
| 591 | ITAL REFINING, S.L. | B27795111 | Rúa Valiña 19, bajo oficina | 36005 | Poio | Pontevedra | España | Mayorista | | 15/06/2016 | | |
| 721 | IWC OIL AND REFINERY, LLC | EU273210199 | 2618 Melrose Canyon Dr | TX 78232 | | San Antonio | EEUU | Mayorista | | 1/01/2022 | | |
| 646 | JERA TRADING PTE LTD | GB265299173 | 80 Victoria Street, Cardinal place | SW1E 5JL | Londres | Londres | Reino Unido | Mayorista | | 01/04/2019 | | |
| 847 | JOVE ENERGIA RENOVABLE, S.L. | B56720980 | CALLE SAN CLAUDIO, NUM 55 POSTERIOR | 28038 | Madrid | Madrid | España | | 900 877 303 | 01/09/2025 | | |
| 705 | JUAN ENERGY S.L. | B88591466 | Gran Vía Del Este, 1 | 28032 | Madrid | Madrid | España | | 900 926 950 | 10/07/2020 | 13/06/2022 | Baja |
| 507 | KOCH COMMODITIES EUROPE LIMITED | 6858997 | 20 Gresham Street,Fourth Floor | EC2V 7JE | London | London | Reino Unido | Mayorista | | 19/11/2013 | 30/09/2024 | Baja |
| 502 | KOCH SUPPLY & TRADING SARL | CHE112980714MWST | Chemin de Blandonnet, 8 | 1214 | Vernier | Vernier | Suiza | Mayorista | | 01/07/2013 | | |
| 715 | KOLMAR NL B.V | N3030409A | Claude Debussylaann 10 | 1082 MD | Amsterdam | Amsterdam | Paises Bajos | Mayorista | | 01/09/2020 | | |
| 584 | LABOIL ENERGÍA, S.L. | B22373948 | C/ Ricardo del Arco,16-1º izq | 22004 | Huesca | Huesca | España | | 900 103 089 | 01/04/2016 | | |
| 522 | LEGAS IBERIA, S.L. | B86926102 | C/ Arroyofresno 24, escal 3/3ºizq | 28035 | Madrid | Madrid | España | Mayorista | | 8/02/2021 | 5/01/2022 | Baja |
| 812 | LINK ENERGIA, S.L | B87997821 | Cardenal Marcelo Spínola 4, 1D, 28016 Madrid | 28016 | Madrid | Madrid | España | | 900 525 775 | 01/04/2024 | 17/05/2024 | Baja |
| 43 | LIQUID NATURAL GAZ, S.L. | B25526732 | Pol. Ind. Sant Ermengol, 11 | 8630 | Abrera | Barcelona | España | | | | | |
| 665 | LONJAS TECNOLOGÍA, S.A. | A28039469 | C/Aragoneses, 9 bis | 28108 | Madrid | Madrid | España | | 900 101 897 | 01/09/2019 | | |
| 604 | LOOP Electricidad y GAS, S.L | B87095543 | C/Cardenal Marcelo Spínola 4,1ºD | 28016 | Madrid | Madrid | España | | | 01/12/2016 | | |
| 707 | LOVE ENERGY, S.L. | B67604157 | CALLE ELECTRONICA, NUMERO 19 PLANTA 7 PUERTA C | 08915 | Badalona | Barcelona | España | | 900 831 006 | 01/09/2020 | | |
| 701 | LUNANUEVA GAS SL | B88553011 | Paseo de los parques 6, Portal 16-2c | 28109 | Alcobendas | Madrid | España | Mayorista | | 01/06/2020 | 05/08/2024 | Baja |
| 679 | LUVON ENERGIA, S.L. | B93400836 | Calle Aragón, número 22, Bajo, C. P. 36206- Vigo Pontevedra | 36206 | Vigo | Pontevedra | España | | 900 827 253 | 01/01/2020 | 03/11/2025 | Baja |
| 840 | LUZY ENERGIA RENOVABLE, S.L. | B09876715 | AVENIDA DEL CARDENAL HERRERA ORIA, 63 | 28034 | AVENIDA DEL CARDENAL HERRERA ORIA, 63 | Madrid | España | | 900 120 020 | 30/06/2026 | | |
| 782 | Landwärme CE Trading Korlátolt Felelosségu Társaság | HU26240134 | Lánchíd utca 15. IV. em. 2. | 1013 Budapest | Budapest | Budapest | Hungria | Mayorista | | 10/01/2023 | | |
| 557 | MACQUARIE BANK LIMITED, LONDON BRANCH | GB577704800 | Ropemaker Place, 28 Ropemaker Street | EC2Y 9HD | London | London | Reino Unido | Mayorista | | 01/04/2015 | | |
| 776 | MADGAS ENERGIA, S.L. | B10862498 | Calle Arizónicas, nº7 | 28223 | Pozuelo de Alarcón | Madrid | España | | 900845969 | 01/01/2023 | | |
| 844 | MAGNUM ENERGY, S.L. | B75923318 | Calle Francisco Silvela nº9, 6º Izq | 28028 | Madrid | Madrid | España | | 900544655 | 01/05/2025 | | |
| 819 | MAIAN ENERGY TRADING, S.L.U. | B70794482 | calle Joaquín María López 17 | 28015 | Madrid | Madrid | ESPAÑA | Mayorista | | 01/05/2024 | | |
| 800 | MARKOIL S.A | A79209854 | AVDA TRANSICIÓN ESPAÑOLA, NUM. 30 P.E OMEGA - EDIFICIO D 28108 ALCOBENDAS - (MADRID) | 28108 | Alcobendas | MADRID | España | | 900834955 | 01/11/2023 | | |
| 704 | MASQLUZ 2020, S.L. | B67580100 | CALLE ELECTRONICA, NUMERO 19 PLANTA 7 PUERTA | 08915 | Badalona | Barcelona | España | | 900 140 150 | 01/09/2020 | | |
| 633 | MATTERHORN LNG TERMINAL, S.L.U | B87801700 | Paseo de la Castellana, 53, planta 8 | 28046 | Madrid | Madrid | España | Mayorista | | 01/12/2017 | 24/02/2025 | Baja |
| 683 | MERCURIA ENERGY TRADING SA | CHE116348521 | 50 Rue de Rhone, | 1204 | Genove | Genove | Suiza | Mayorista | | 01/08/2020 | | |
| 600 | MET ENERGIA ESPAÑA, S.A | A87612644 | Paseo de la Castellana14, Pl22A | 28046 | Madrid | Madrid | España | | 900 838 456 | 01/01/2017 | | |
| 542 | MET INTERNATIONAL AG | CHE395558271MWST | 141 Baarerstrasse. | CH-6300 | Zug | Zug | Suiza | | | 02/09/2014 | | |
| 87 | METHANE LOGISTICS, S.L. | B64741127 | P.I. Pla de la Bruguera. Solsonès, 91-93 | 8211 | Castellar del Vallés | Barcelona | España | | | 01/02/2012 | | |
| 818 | METLEN ENERGY & METALS, S.A. | EL094316669 | 8, Artemidos str. Marousi, Athens, PO 15125 | PO 15125 | | Atenas | Grecia | Mayorista | | 01/08/2024 | | |
| 870 | METLEN INTERNATIONAL TRADING COMPANY AG | CHE302533177IVA | Lindenstrasse 10 | 6340 | Baar | Cantón de Zug | Suiza | MAYORISTA | | 01/06/2026 | | |
| 689 | MFT Energy A/S | DK38175130 | Margrethepladsen 4, 3, | 8000 | Aarhus | Aarhus | Dinamarca | Mayorista | | 01/03/2020 | | |
| 698 | MIND ENERGY A/S | DK17225898 | Tangen 29 | 8200 | Aarhus | Aarhus | Dinamarca | Mayorista | | 11/05/2020 | | |
| 839 | MITSUI BUSSAN COMMODITIES LTD. | GB208153237 | 1st Floor, Warwick Court, 5 Paternoster Square | EC4M 7DX | London | Gran Londres | UK | Mayorista | | 01/06/2025 | | |
| 838 | MITSUI BUSSAN GAS & POWER SOLUTIONS B.V. | NL863162642B01 | Barbara Strozzilaan 201 | 1083 HN | Amsterdam | Holanda Septentrional (North Holland) | The Netherlands | Mayorista | | 01/06/2025 | 18/05/2026 | Baja |
| 88 | MOEVE COMMERCIAL, S.A. | A80298896 | Torre Moeve; Paseo de la Castellana, 259-A | 28046 | Madrid | Madrid | España | | | 01/03/2012 | | |
| 519 | MOEVE GAS AND POWER, S.A.U. | A28142552 | Torre MOEVE; Paseo de la Castellana, 259-A | 28046 | Madrid | Madrid | España | Mayorista | | 31/01/2014 | | |
| 42 | MOLGAS ENERGÍA, S.A.U. | A81466625 | Avenida de Castilla, 2;San Fernando Business Park, Edificio Francia Planta 2 | 28830 | San Fernando de Henares | Madrid | España | | | | | |
| 880 | MORGAN STANLEY CAPITAL GROUP, INC | N4004263B | 1585
Broadway | 10036 | Nueva York | Nueva York | Estados Unidos | Mayorista | | 13/04/2026 | | |
| 871 | MORTERO SOLAR SPAIN, S.L. | B56989304 | calle Cardenal Marcelo Spínola 12, 2 planta | 28016 | Madrid | Madrid | España | | 900 060 236 | 06/04/2026 | | |
| 531 | MULTIENERGIA VERDE, S.L. | B99406944 | C/Francisco Vitoria 9, Entreplanta Derch | 50008 | Zaragoza | Zaragoza | España | | | 21/04/2014 | 1/11/2021 | Baja |
| 747 | MULTIENERGÍAS MLC, SL | B19707355 | POLIGONO INDUSTRIAL LOS RUBIALES II, CALLE 4 S/N | 23700 | Linares | Jaén | España | | 900 155 687 | 01/09/2021 | | |
| 39 | MULTISERVICIOS TECNOLÓGICOS, S.A. | A81655540 | C/ Narváez, 80 Entreplanta | 28009 | Madrid | Madrid | España | | | | | |
| 803 | Mitsui & Co LTD | N7321392H | 2-1, Otemachi 1-chome, Chiyoda-ku | 100-8631 | Chiyoda-ku | Tokyo | Japón | Mayorista | | 11/07/2024 | | |
| 627 | NABALIA ENERGIA 2000 S.A. | A66585191 | Plaza Urquinaona,7 | 8010 | Barcelona | Barcelona | España | | 900 831 671 | 01/12/2017 | | |
| 33 | NATURGY CLIENTES EMPRESAS, S.A.U | A08431090 | Avenida de América, 38 | 28028 | Madrid | Madrid | España | | 900 100 251 | | | |
| 762 | NATURGY CLIENTES, S.A.U. | A67760876 | Avenida de América, 38 | 28028 | Madrid | Madrid | España | | 900 385 425 | 07/03/2022 | | |
| 797 | NATURGY COMERCIALIZADORA EMPRESAS SA | A44760742 | Avenida de América 38, 28028 Madrid | 28028 | Madrid | MADRID | España | | 900 100 264 | 15/12/2023 | | |
| 632 | NATURGY COMMODITIES TRADING, S.A. | A08000606 | Avda de San Luis,77 | 28033 | Madrid | Madrid | España | Mayorista | | 01/12/2017 | | |
| 758 | NATURGY NUEVAS ENERGIAS S.L.U | B88263249 | Avd. de San Luis, 77 | 28033 | Madrid | Madrid | España | | 900 155 303 | 15/12/2021 | | |
| 514 | NEOELECTRA ENERGIA, S.L.U. | B25512641 | C/ Frederic Mompou, 5,3º 4 | 8960 | Sant Just Desvern | Barcelona | España | | 900 102 613 | 01/01/2014 | 06/04/2026 | Baja |
| 35 | NEXUS ENERGÍA, S.A. | A62332580 | C/Playa de Riazor 12, ofic1.5 | 28042 | Madrid | Madrid | España | | 900 818 533 | | | |
| 708 | NEÓN ENERGÍA EFICIENTE, S.L. | B67580092 | CALLE LORENZO SALOM, NÚMERO 6 | 46007 | Valencia | Valencia | España | | 900 730 287 | 01/09/2020 | | |
| 786 | NFE GAS TRADING LIMITED | IE4093444BH | Calle Bahía de Santander nº 17 | 28042 | Madrid | Madrid | España | Mayorista | | 01/05/2023 | | |
| 619 | NIEVES ENERGÍA , S.L. | B65940322 | C/Tres Rieres SN Nave 9 | 08292 | Esparreguera | Barcelona | España | | | 01/07/2017 | | |
| 569 | NINOBE SERVICIOS ENERGÉTICOS, S.L. | B98219868 | C/ Ronda Narcís Monturiol, 6; Edificio Destro oficina 103-b, | 46980 | Panterna | Valencia | España | | | 01/11/2015 | 18/04/2023 | Baja |
| 730 | NITOR ENERGY A/S | DK38680781 | Klosterport 4x, 4, 8000, Aarhus | 8000 | Aarhus | Aarhus | Dinamarca | Mayorista | | 01/04/2021 | | |
| 94 | NOBLE CLEAN FUELS LIMITED | GB799162671 | 33 Cavendish Square | W1G OPW | London | London | Reino Unido | Mayorista | | 01/09/2014 | 02/09/2021 | Baja |
| 768 | NORLYS ENERGY TRADING A/S | DK41419849 | Over Baekken, 6 | 9000 | Aalborg | | Dinamarca | Mayorista | | 01/11/2022 | | |
| 696 | NOVATEK GAS & POWER GMBH | CHE112670320MWST | Bundesplatz 9, | 63000 | Zug | Zug | Suiza | Mayorista | | 01/06/2020 | | |
| 561 | NUEVA COMERCIALIZADORA ESPAÑOLA, S.L | B99301822 | C/Pedro IV El Ceremonioso,4 Esc.Izq12A | 50009 | Zaragoza | Zaragoza | España | | | 14/07/2015 | | |
| 666 | OCTOPUS ENERGY ESPAÑA, S.L. | B40563082 | Avda del Puerto,1,Principal 1,esc dcha | 46021 | Valencia | Valencia | España | | 900 877 878 | 01/11/2019 | | |
| 684 | OCUO ENERGÍA S.L. | B67476598 | Carrer Riera Can Pahissa, 7, 11 | 8750 | Molins de Rei | Barcelona | España | | 900 707 079 | 01/06/2020 | | |
| 775 | OFFICE NATIONAL DE L'ELECTRICITÉ ET L'EAU POTABLE (ONEE) | MA40486450 | Avenue Mohamed Bel Hassan El Ouazzani | 10002 | RABAT | RABAT | MARRUECOS | MAYORISTA | | 01/01/2023 | | |
| 76 | ON DEMAND FACILITIES, S.L.U. | B91405084 | San Bernardo, 15 | 41018 | Sevilla | Sevilla | España | | 900 908 108 | 18/05/2011 | | |
| 75 | ORUS ENERGÍA, S.L. | B64885064 | | | | | | | | 28/03/2011 | 31/12/2019 | Baja |
| 784 | Oxperta Green Energy S.L. | B10679488 | Calle Marconi, 5 | 08210 | Barberà del Vallès | Barcelona | España | | 900 908 101 | 01/01/2023 | 15/04/2026 | Baja |
| 744 | PARATIENERGÍA S.L. | B04990727 | Travesía Téllez, nº 4, entreplanta dcha | 28007 | Madrid | Madrid | España | | 900 122 153 | 01/09/2021 | | |
| 738 | PASIÓN ENERGIA, S.L. | B01969112 | Avenida de la Arruzafilla, 114 | 14011 | Córdoba | Córdoba | España | | 900 730 302 | 01/04/2021 | | |
| 667 | PAVILION ENERGY SPAIN, S.A.U. | A88410493 | Torre de Cristal, Paseo de la Castellana 259C, Planta 21 (sur) | 28046 | Madrid | Madrid | España | Mayorista | | 15/09/2019 | | |
| 532 | PETRO MEETING POINT, S.L.U | B36931426 | Calle Coso 46, 2º B | 50004 | Zaragoza | Zaragoza | España | Mayorista | | 01/06/2014 | 11/02/2021 | Baja |
| 645 | PETROCHINA INTERNATIONAL (LONDON) Co, LIMITED | GB927136031 | The Adelphi, 1-11 John Adam Street | WC2N6HT | Londres | Londres | Reino Unido | Mayorista | | 01/12/2018 | | |
| 77 | PETRONAVARRA, S.L. | B31595523 | Ctra. Ulzama, km 3 | 31195 | Ballariain | Navarra | España | | 900 302 505 | 01/06/2011 | | |
| 811 | PINDO ELECTRICIDAD Y GAS SL | B88015540 | CALLE CARDENAL MARCELO SPINOLA 4, 1DCHA | 28016 | Madrid | Madrid | España | | 900 525 775 | 01/04/2024 | 17/05/2024 | Baja |
| 772 | PLENA ENERGIA RENOVABLE, S.L. | B98729486 | Calle Baixada l’Estació, nº9, piso 3º, puerta 3 | 46800 | Xàtiva | Valencia | España | | 900 877 075 | 01/10/2022 | | |
| 623 | POTENZIA COMERCIALIZADORA, S.L. | B87574463 | C/ Navarra 24 bis 1ºc | 28039 | Madrid | Madrid | España | | | 20/09/2017 | | |
| 815 | POWER SOLAR TRADE SL | B16735326 | CALLE MARIA DE MOLINA (CENTRO DE OFICINAS ATIC, NUM 39 | 28006 | Madrid | Madrid | España | | 900884925 | 01/10/2024 | 01/10/2024 | Baja |
| 554 | POWERBRIDGE RESOURCES GROUP LTD | 1847567 | 20 Hussein Wassef St,Dokki, | PO. Box:12311 | Giza | Giza, | Egypto | Mayorista | | 20/02/2015 | | |
| 879 | PPD GLOBAL SA | CHE376071198MWST | VIA SERAFINO BALESTRA, 17 | 6900 | LUGANO | LUGANO | SUIZA | MAYORISTA | | 20/04/2026 | | |
| 534 | PRIMA LNG N.V. | N9082519A | Uitbreidingstraat 84, | 2600 | Berchem | Antwerpen | Bélgica | | | 13/06/2014 | | |
| 90 | PRIMAGAS ENERGIA, S.A.U. | A61128013 | C/Beethoven,15-7º3ª | 8021 | Barcelona | Barcelona | España | | | 01/04/2012 | | |
| 881 | PRIMEVOLT ENERGY, S.L. | B24927550 | Calle Moreno Torroba 46 2B | 28014 | MADRID | MADRID | ESPAÑA | | 900732834 | 01/05/2026 | | |
| 789 | PROSPECTIVA INVERSIONES, S.L | B88394242 | Calle Serrano 85, planta 6ª, puerta A | 28006 | Madrid | Madrid | España | Mayorista | | 01/09/2025 | | |
| 853 | PROT ENERGIA COMERCIALIZACION, S.L | B66477993 | c/ Solicrup, 19 | 08800 | Vilanova i la Geltrú | Barcelona | España | | 900 802 435 | 01/01/2026 | | |
| 732 | Peninsula Petroleum S.L. | B11905163 | Avenida Océano Atlántico, nº 44, parcela IT2.1, Parque Tecnológico y Empresarial Las Marismas de Palmones1 | 11379 | Los Barrios | Cádiz | España | | 900 157 383 | 22/12/2023 | | |
| 766 | Q-ENERGY GAS MARKETS, S.L. | B67883082 | Jenner, 3 Madrid | 48930 | Getxo | Bizkaia | España | | 900 053 724 | 01/07/2022 | 04/12/2024 | Baja |
| 751 | QUASAR GAS, S.L. | B05342167 | Paseo Independencia, nº 19, Planta 1, Puerta 5 | 50001 | Zaragoza | Zaragoza | España | | 900 101 142 | 01/10/2021 | | |
| 749 | REA ENERGÍA S.L. | B05470661 | CALLE HERMOSILLA, NUM 21
ESC. 1, PLANTA EXT, PUERTA DR
| 28001 | Madrid | Madrid | España | Mayorista | | 01/07/2021 | | |
| 805 | REPOWER AG | CHE116273260MWST | Via da Clalt 12, | 7742 | Poschiavo | Brusio | Suiza | Mayorista | | 02/01/2024 | | |
| 536 | REPSOL BUTANO, S.A. | A28076420 | C/ Menendez Alvaro, 44; | 28045 | Madrid | Madrid | España | | | 01/10/2014 | | |
| 545 | REPSOL COMERCIAL DE PRODUCTOS PETROLIFEROS, S.A. | A80298839 | C/ Mendez Alvaro 44 | 28045 | Madrid | Madrid | España | | | 01/11/2014 | | |
| 44 | REPSOL COMERCIALIZADORA DE ELECTRICIDAD Y GAS S.L.U. | B39540760 | C/ Isabel Torres, 19 | 39011 | Santander | Santander | España | | 900 118 866 | | | |
| 46 | REPSOL GENERACIÓN ELÉCTRICA S.A.U. | A62733126 | Calle Isabel Torres, 19 | 39011 | Santander | Santander | España | | | | 23/06/2025 | Baja |
| 46 | REPSOL GENERACIÓN ELÉCTRICA, S.L.U. | B62733126 | C/ Isabel Torres, 19 | 39011 | Santander | Santander | España | | | | 02/07/2021 | Baja |
| 99 | REPSOL LNG HOLDING, S.A | A79787420 | C/ Méndez Álvaro, nº 44 | 28045 | Madrid | Madrid | España | | | 12/12/2012 | | |
| 631 | ROCK TRADING WORLD, S.A | CHE261964916 | Quais des Bergues 25 | 1201 | Genove | Genove | Suiza | Mayorista | | 23/11/2017 | 28/12/2021 | Baja |
| 691 | ROFEICA ENERGIA S.A. | A61621843 | Polígono Plans DArau s/n | 8787 | LaPobla de Claramunt | Barcelona | España | | 900 101 346 | 01/04/2020 | | |
| 574 | ROLEAR - AUTOMATIZAÇOES, ESTUDOS E REPRESENTAÇOES, S.A. | 500883750 | Parque Rolear, Sítio do Areal Gordo, Apartado 530, | 8001-906 | Faro | Faro | Portugal | Mayorista | | 01/12/2015 | 30/06/2022 | Baja |
| 67 | RWE SUPPLY & TRADING GmbH / (Sucursal en Reino Unido GB524921354) | DE813022070 | RWE Platz 6 / (60 Threadneedle Street) | 45141 / (EC2R8HP) | Essen / (London) | Essen / (London) | Alemania / (Reino Unido) | Mayorista | | 01/08/2010 | | |
| 857 | SALLICRA, S.L. | B67824896 | CALLE PINA DE MONTALGRAO, NUM 2 | 12540 | VILA-REAL | CASTELLON | ESPAÑA | Mayorista | | 01/09/2025 | | |
| 51 | SAMPOL INGENIERIA Y OBRAS, S.A | A07088206 | Gremio Boneteros, 48 | 7009 | Palma | Islas Baleares | España | | 900 373 438 | 20/11/2020 | | |
| 714 | SEEIT ENERGIA, S.L | B01766807 | PASEO DE LA CASTELLANA, NUM 74 PLANTA 1, PUERTA A | 28046 | Madrid | Madrid | España | | | 20/08/2020 | | |
| 883 | SEFE LNG LTD
| GB927405129001 | 20 Triton Street | NW1 3BF | LONDRES | LONDRES | REINO UNIDO | MAYORISTA | | 01/09/2026 | | |
| 541 | SEFE MARKETING & TRADING LTD | GB927405129 | 20 Triton Street, | NW1 3BF | London | London | Reino Unido | Mayorista | - | 02/09/2014 | | |
| 658 | SEFE Marketing & Trading Switzerland AG | CHE138925786MWST | Poststrasse 2, | 6300 | Zug | Zug | Suiza | Mayorista | | 01/01/2021 | | |
| 61 | SERVIGAS S. XXI, S.A. | A99262610 | C/Felipe Sanclemente,18, pl izq | 50001 | Zaragoza | Zaragoza | España | | 900 102 045 | 19/01/2010 | | |
| 533 | SHELL ENERGY EUROPE LIMITED | GB235763255 | Paseo de la Castellana, 257-6º, Madrid – 28046, | SE1 7NA | London | London | Reino Unido | Mayorista | | 10/06/2014 | | |
| 674 | SHELL ENERGY EUROPE, B.V | NL812093677B01 | Carel Van Bylandtlaan 30 | 2596HR | La Haya | La Haya | Países Bajos | Mayorista | | 01/10/2019 | 25/12/2022 | Baja |
| 8 | SHELL ESPAÑA, S.A. | A28013522 | Paseo de la CAstellana 257, 6ª Planta | 28046 | Madrid | Madrid | España | | 900 12 16 20 | 29/10/2003 | | |
| 37 | SHELL SPAIN LNG, S.A. | A83303776 | Paseo de la Castellana 257,6ªpl | 28046 | Madrid | Madrid | España | | | | | |
| 848 | SHELL WESTERN LNG B.V. Sucursal en España / (SHELL WESTERN LNG B.V. N0363737H) | W0364007E | Paseo de la Castellana, 257 6ª planta / (Carel van Bylandtlaan 30) | 28046 / (2596 HR) | Madrid / (La Haya) | Madrid /(Holanda Meridional) | España / (Países Bajos) | | +34 900 12 16 20
| 01/06/2025 | | |
| 858 | SICOSA ENERGY, S.L. | B22878813 | Calle de la república nº 3, bajo. | 08202 | Sabadell | Barcelona | España | Mayorista | | 01/01/2026 | | |
| 885 | SIX ONE COMMODITIES EUROPE TRADING GMBH
| CHE465828118MWST | Bahnhofstrasse 10 | 6300 | Zug | Zug | Suiza | Mayorista | | 01/09/2026 | | |
| 722 | SMART GAS ENERGY S.L. | B88637533 | CALLE FERNANDO EL SANTO, NUM 25 PLANTA 4, PUERTA IZD | 28010 | Madrid | Madrid | España | | 900877884 | 01/01/2022 | | |
| 845 | SMARTESTENERGY LIMITED | GB773846584 | The Columbus Building, 7 Westferry Circus | E14 4HD | Londres | Londres | Reino Unido | Mayorista | | 01/06/2025 | | |
| 661 | SOCAR TRADING, S.A. | CHE113990112TVA | Rue du Rhone 40, | 1204 | Ginebra | Ginebra | Suiza | Mayorista | | 01/05/2019 | | |
| 641 | SOCIEDAD DE HIDROCARBUROS DE EUSKADI, S.A. | a48149462 | Alameda Urquijo, 36 -1ª planta,Edificio Plaza Bizkaia | 48011 | Bilbao | Bizkaia | España | | | 01/10/2018 | 28/10/2025 | Baja |
| 720 | SOLELEC IBERICA S.L. | B93257640 | C/ Concepción Arenal ,6 Local 2 | 29004 | Málaga | Málaga | España | | 900 834 971 | 10/11/2020 | 23/09/2023 | Baja |
| 816 | SOLHIDRO GREEN SUMINISTRADORA, S.L. | B10588333 | Avenida de la Gran Vía de Hortaleza, 1 | 28033 | Madrid | Madrid | España | Mayorista | | 01/04/2024 | | |
| 656 | SOLSTAR LIMITED | IE9842803 | | | | | | | | 01/03/2019 | 24/07/2019 | Baja |
| 85 | SOLVAY ENERGY SERVICES SAS | FR42428766976 | | | | | | | | 01/01/2012 | 20/12/2017 | Baja |
| 45 | SONATRACH GAS COMERCIALIZADORA, S.A.U. | A84689272 | Edificio Torre Espacio; Paseo de la Castellana 259, DPl34 | 28046 | Madrid | Madrid | España | Mayorista | 900 103 324 | | | |
| 856 | SPOCK P2P, S.L. | B67743567 | Calle Lluis Muntades 8 | 08035 | Barcelona | Barcelona | España | | 900670922 | 01/10/2025 | | |
| 866 | STANDARD CHARTERED BANK | N8260366C | Paseo de la Castellana 110 | 28046 | Madrid | Madrid | España | MAYORISTA | | 15/09/2026 | | |
| 764 | STIN, S.A. | A02022366 | AVDA LEONARDO DA VINCI, NUM 8 28906 GETAFE - (MADRID) | 28906 | Getafe | Madrid | España | | 900906380 | 01/01/2025 | 31/12/2024 | Baja |
| 846 | STX COMMODITIES BV | N0114121G | Vijzelstraat 79 A | 1017HG
| Amsterdam | Amsterdam | Paises Bajos | Mayorista | | 01/12/2025 | | |
| 624 | SUMINISTROS DE GAS Y LUZ EUROPA,S.L. | B87826269 | C/ Núñez de Balboa, 118 1º I | 28006 | Madrid | Madrid | España | | 900 103 609 | 01/10/2017 | 20/02/2024 | Baja |
| 642 | SUPRA ENERGIA S.L. | B87546990 | C/Virgilio, 2 B puerta 3B; Centro Empresarial Arco | 28223 | Pozuelo de Alarcon | Madrid | España | | 900 869 935 | 01/04/2019 | | |
| 580 | SWAP ENERGÍA, S.A. | A75128660 | Avda Errekalde 33-2 | 20018 | San Sebastian | Guipuzcua | España | | | 01/04/2016 | | |
| 566 | TAMECO ENERGIA, S.L.U | B87205977 | c/Cronos 8, 3º ( Centro de Negocios Baratheon) | 28037 | Madrid | Madrid | España | | | 01/11/2015 | 19/12/2021 | Baja |
| 757 | TELECOR, S.A.U | A80028731 | C/ HERMOSILLA, 112 | 28009 | Madrid | Madrid | España | | 900 300 370 | 1/10/2021 | | |
| 700 | TERRANUEVAENERGIA SL | B88553003 | C/Guadiana, 9 | 28002 | Madrid | Madrid | España | Mayorista | | 01/06/2020 | | |
| 678 | TIERRA ATOMIZADA, S.A. | A12095295 | Camino Foyes Ferraes, s/n | 12110 | L'Alcora | Castellón | España | | 900 022 624 | 07/09/2019 | 01/02/2021 | Baja |
| 783 | TITAN Supply B.V. | NL857902672B01 | Piet Heinkade 93 B 1019 GM | 1019 GM | Amsterdam | Amsterdam | Paises Bajos | Mayorista | | 01/12/2025 | | |
| 780 | TMS ESPAÑA 2022, S.L. | B10747913 | Avenida Valdemarín, Nº 87, bloque B, 1º A | 28026 | Madrid | Madrid | España | Mayorista | | 01/01/2023 | | |
| 2 | TOTALENERGIES CLIENTES, S.A.U. | A95000295 | Plaza Ferroviarios Asturianos , 1 | 33012 | Oviedo | Asturias | España | | 900 907 000 | | | |
| 637 | TOTALENERGIES ELECTRICIDAD Y GAS ESPAÑA S.A.U. | A87803862 | C/ Ribera del Loira,46; Puerta de las Naciones | 28042 | Madrid | Madrid | España | | 900 926 676 | 01/07/2018 | | |
| 4 | TOTALENERGIES MERCADO ESPAÑA, S.A.U. | A33543547 | Plaza del Fresno, 2 | 33207 | Oviedo | Oviedo | España | | | 29/03/2003 | 02/12/2024 | Baja |
| 739 | TRADE UNIVERSAL ENERGY, S.A. | A66531013 | Rambla Catalunya, 91-93 3º3ª | 08008 | Barcelona | Barcelona | España | | 900 920 099 | 01/06/2021 | 16/10/2021 | Baja |
| 668 | TRADEA BROS OPERADOR PETROLIFERO, S.L. | B66814591 | C/Provenca, 42 | 8008 | Barcelona | Barcelona | España | Mayorista | | 15/01/2020 | | |
| 681 | TRADEA GREEN GAS, S.L. | B25849522 | Pol. Ind. El Camí dels Frares,calle I,nº14 | 25191 | Lleida | Lleida | España | | 900 877 811 | 1/12/2020 | | |
| 540 | TRAFIGURA PTE, LTD | 199601595D | 1 Rue de Jargonnant, | 1207 | Geneva | Geneva | Suiza | Mayorista | | 02/09/2014 | | |
| 610 | TRAFIGURA TRADING(Europe), SARL | CHE194037761MWST | 1 Rue de Jargonnant, | 1207 | Ginebra | Ginebra | Suiza | Mayorista | | 01/02/2017 | | |
| 548 | TRAILSTONE GmbH | DE289523572 | Am Zoofenster,Hardenbergstr, 27 | 10623 | Berlin | Berlin | Alemania | Mayorista | | 01/01/2015 | 26/11/2020 | Baja |
| 748 | TU COMERCIALIZADORA DE ENERGÍA LUZ, DOS, TRES, S.L | B88628581 | Calle José Echegaray 1 | 28232 | MADRID | MADRID | España | | 900 52 57 75 | 01/10/2021 | 05/12/2023 | Baja |
| 873 | TU ELECTRICA, S.L. | B06969059 | PJE de la Guardia Civil Antonio Molina M3, Bloque 3 Esc 1 puerta 4 | 52004 | Melilla | Melilla | España | | 900 264 925 | 16/03/2026 | | |
| 882 | TUNA TRADING GAS SL | B24905184 | PASEO DE LA CASTELLANA 194 | 28046 | MADRID | MADRID | ESPAÑA | MAYORISTA | | 25/05/2026 | | |
| 832 | TURN2X ASSET CO I EXTREMADURA, S.L.U | B70852116 | Leopoldstr. 173E | DE-80804 | München | Baviera | Alemania | Mayorista | | 15/11/2024 | | |
| 96 | TotalEnergies Gas & Power Limited, Londres, sucursal de Meyrin-Ginebra / (TOTALENERGIES GAS & POWER LIMITED 02172239) | CHE309541427 | Route de l’Aeroport 10 / (10 Upper Bank St,Canay Wharf) | 1215 / (E14 5BF) | Ginebra / (London) | Ginebra / (London) | Suiza / (Reino Unido) | Mayorista | | 16/07/2012 | | |
| 808 | UAB Monta Trading | LT100016041310 | Skaidiskiu g. 20, LT-11235 Vilnius , Lituania | | | | Lituania | Mayorista | | 01/03/2024 | | |
| 628 | UNIELECTRICA ENERGIA, S.A | A14944276 | Avda del Brillante, 14, | 14012 | Córdoba | Córdoba | España | | 900 834 967 | 01/12/2017 | | |
| 64 | UNIPER GLOBAL COMMODITIES S.E. | DE192205313 | Holtzstrasse,6 | 40221 | Düsseldorf | Düsseldorf | Alemania | | | 01/03/2010 | | |
| 742 | UNIÓN FENOSA GAS S.A. | A81944324 | Avenida San Luis, 77 | 28033 | Madrid | Madrid | España | Mayorista | | 01/04/2021 | 01/01/2023 | Baja |
| 734 | VATTENFALL ENERGY TRADING GMBH | DE813152937 | Dammtorstrasse 29-32 | 20354 | Hamburg | Hamburg | Alemania | | | 01/06/2021 | | |
| 650 | VECTOR ENERGIA, S.L. | B88231576 | C/Cardenal Marcelo Spínola 4,1D | 28016 | Madrid | Madrid | España | | 900 525 235 | 01/12/2018 | 30/01/2026 | Baja |
| 825 | VERDE ENERGIA Y GAS, S.L. | B70679857 | Passeig de Gràcia 95, Planta 5º, Puerta 1ª, C.P. 08008, Barcelona | 08008 | Barcelona | Barcelona | España | | 900892284 | 01/01/2025 | 27/07/2026 | Baja |
| 862 | VESTA ENERGIA, S.L. | B22998694 | Calle Puerto Rico, 8B, 2C | 28016 | Madrid | Madrid | España | MAYORISTA | | 01/12/2025 | | |
| 63 | VILLARMIR ENERGÍA, S.L.U. | B85253888 | Pº de la Castellana 259 D, pl 47 | 28046 | Madrid | Madrid | España | | | 15/03/2010 | 31/12/2022 | Baja |
| 767 | VIROQUE ENERGY, S.L. | B09819814 | Paseo de la Castellana, 96, 2 izq | 28046 | Madrid | Madrid | España | | 900 110 482 | 01/09/2022 | | |
| 759 | VISALIA ENERGIA, S.L. | B67302489 | Rambla Garraf 76 | 00812 | Sant Pere de Ribes | Barcelona | España | | 900901059 | 01/01/2022 | 06/05/2022 | Baja |
| 91 | VITOGAS ESPAÑA, S.A.U. | A81716706 | Avda. Baix Llobregat 1-3,2ºA; | 8820 | El Prat de Llobregat | Barcelona | España | | | 12/03/2012 | | |
| 515 | VITOL, S.A. | CHE116346864 | Place des Berges nº3 | 1201 | Ginebra | Ginebra | Suiza | Mayorista | | 01/03/2014 | | |
| 615 | VIVA ENERGÍA Y SOLUCIONES, S.L. | B87717823 | C/Rio Jarama,126 | 45007 | Toledo | Toledo | España | | 900 649 211 | 15/05/2017 | | |
| 614 | VIVE ENERGIA ELÉCTRICA, S.A. | A87705471 | C/Príncipe de Vergara, 35 | 280017 | Madrid | Madrid | España | | | 01/05/2017 | | |
| 629 | VIVO ENERGIA FUTURA, S.A. | A66783515 | Avda San Salvador,18 | 8913 | Barcelona | Barcelona | España | | 900 834 987 | 01/12/2017 | | |
| 831 | VOLTA ENERGY DESIGNATED ACTIVITY COMPANY | N0374865D | Custom House Plaza, Block 6, International Financial Services Centre | D01 X9Y5 | Dublín | Leinster | Irlanda | Mayorista | | 28/10/2024 | | |
| 814 | Virtus Resources Partners AG | CHE186830964 | 6300 Zug, Eschenring 5 | | | | Suiza | Mayorista | | 01/09/2025 | | |
| 582 | WATIO WHOLESALE, S.L | B86755147 | Camino Zorrozgoiti, 66, 1º | 48013 | Bilbao | Bizkaia | España | | 900 373 880 | 01/05/2016 | | |
| 609 | WATIUM, S.L. | B86459260 | Rambla Garraf 76 | 00812 | Sant Pere de Ribes | Barcelona | España | | 900901059 | 01/07/2021 | 14/01/2023 | Baja |
| 760 | WEKIWI SL | B67686782 | PASEO DE LA CASTELLANA, 161 - Planta 2 | 28046 | Madrid | Madrid | España | | 900 525 748 | 11/01/2022 | | |
| 713 | WIND TO MARKET, S.A. | A84000884 | C/Príncipe de Vergara 131, planta 2 | 28002 | Madrid | Madrid | España | | 900 823 923 | 01/11/2020 | 27/08/2026 | Baja |
| 690 | WOMBBAT ENERGY SL | B87993937 | C/Mayor 10-4º-4 | 48930 | Getxo | Bizkaia | España | | 900 105 295 | 01/03/2020 | 18/04/2023 | Baja |
| 549 | WORLDENERGY, S.A. | CHE116343713IVA | Via Cantonale | 6562 | Soazza | Soazza | Suiza | Mayorista | | 20/11/2014 | 20/03/2023 | Baja |
| 605 | XENERA COMPAÑÍA ELECTRICA, S.A | A94071727 | C/Policarpo Sanz 21, | 36202 | Vigo | Pontevedra | España | | 900 600 116 | 12/12/2016 | | |
| 551 | YADE JORMAN ESPAÑA S.L. | B85057123 | C/ Escofina 9 | 28400 | Collado Villalba | Madrid | España | | | 05/01/2015 | | |
| 792 | ZUG POWER, S.L. | B67983734 | PASEO DEL FERROCARRIL, NUM. 335 PLANTA 3, PUERTA 4 08860 CASTELLDEFELS - (BARCELONA) | 08860 | CASTELLDEFELS | BARCELONA | España | | 900053748 | 10-07-2023 | | |
| 728 | ČEZ, a. s. | CZ45274649 | Duhová 2/1444, 14053 | Praga 4 | Praga | Praga | República Checa | Mayorista | | 23/11/2020 | | |
