| Company Name | Address | City | NACE | NACE Code | Website | 
| ADEV Energiegenossenschaft |  | Liestal | 3511 | Production of electricity | http://www.adev.ch | 
| ADEV Solarstrom AG |  | Liestal | 3511 | Production of electricity | http://www.adev.ch | 
| ADEV Wasserkraftwerk AG |  | Liestal | 3511 | Production of electricity | http://www.adev.ch | 
| ADEV Windkraft AG |  | Liestal | 3511 | Production of electricity | http://www.adev.ch | 
| AEK Energie AG |  | Solothurn | 3513 | Distribution of electricity | http://www.aek.ch | 
| AEW Energie AG |  | Aarau | 3513 | Distribution of electricity | http://www.aew.ch | 
| AG Elektrizitätswerk Maienfeld |  | Maienfeld | 3511 | Distribution of electricity | http://www.maienfeld.ch/de/elektrizitaetswerk/elektro1/ | 
| AG Kraftwerk Wägital |  | Siebnen | 3511 | Production of electricity |  | 
| AKEB Aktiengesellschaft für Kernenergie-Beteiligungen Luzern | Täschmattstrasse 4 | Luzern | 3514 | Trade of electricity | http://www.akeb.biz | 
| ARA Region Biel AG |  | Brügg BE | 3700 | Other cleaning activities | http://www.mueve.ch | 
| ARA Thunersee | Aarestrasse 62 | Uetendorf | 3700 | Sewerage | http://www.arathunersee.ch | 
| AVENIS SA |  | Lausanne | 3514 | Trade of electricity | http://www.avenis.ch | 
| AZIENDA ELETTRICA DI MASSAGNO (AEM) SA |  | Massagno | 3511 | Electrical installation | http://www.aemsa.ch | 
| Aare Energie AG (a.en) |  | Olten | 3513 | Distribution of electricity | http://www.aen.ch | 
| Aare Versorgungs AG (AVAG) |  | Olten | 3513 | Distribution of electricity | http://www.aen.ch/de/avag.html | 
| Aarewerke AG in Liquidation | Kraftwerk Klingnau | Koblenz | 3511 | Production of electricity | http://www.axpo.ch/internet/nok/de/energieproduktion/hydraulik/kraftwerke/partner_nok/aarewerke.html | 
| Abwasserregion Orpund und Umgebung | Portstrasse 40 | Biel | 3700 | Sewerage | http://www.mueve.ch | 
| Albula-Landwasser Kraftwerke AG | Kraftwerk | Filisur | 3511 | Production of electricity | http://www.axpo.ch/axpo/de/hydroenergie/wissen/partnerkraftwerkevonaxpoaggefuehrt/albula-landwasserkraftwerkeag.html | 
| Aletsch AG |  | Mörel | 3511 | Distribution of electricity | http://www.enalpin.com | 
| Alpiq AG |  | Olten | 3511 | Activities of holding companies | http://www.alpiq.com | 
| Alpiq Holding SA |  | Lausanne | 3511 | Activities of holding companies | http://www.alpiq.com | 
| Alpiq Hydro Aare AG |  | Boningen | 3511 | Production of electricity | http://www.alpiq.ch | 
| Alpiq Suisse SA |  | Lausanne | 3511 | Distribution of electricity | http://www.alpiq.ch | 
| Alpiq Swisstrade AG in Liquidation |  | Olten | 3514 | Trade of electricity | http://www.alpiq.ch | 
| Arbon Energie AG |  | Arbon | 3513 | Distribution of electricity | http://www.arbonenergie.ch | 
| Argessa AG | Mitteldorf 12 | Ergisch | 3511 | Distribution of electricity | http://www.axpo.ch/axpo/de/hydroenergie/wissen/partnerkraftwerkevonaxpoaggefuehrt/argessa.html | 
| Axpo Holding AG |  | Baden | 3511 | Activities of holding companies | http://www.axpo.ch | 
| Axpo Hydro Surselva AG | Zentrale Barnaus | Domat/Ems | 4399 | Other specialised construction activities n.e.c. | http://www.axpo.ch | 
| Axpo Kleinwasserkraft AG |  | Baden | 3511 | Production of electricity | http://www.axpo.com | 
| Axpo Power AG |  | Baden | 3511 | Activities of holding companies | http://www.axpo.ch | 
| Axpo Solutions AG |  | Baden | 3511 | Distribution of electricity | http://www.axpo.com | 
| Axpo Suisse AG in Liquidation | Parkstrasse 23 | Baden | 3511 | Production of electricity | http://www.axposuisse.ch | 
| Axpo Tegra AG |  | Domat/Ems | 3511 | Production of electricity | http://www.axpo-holz.ch | 
| Azienda elettrica ticinese |  | Monte Carasso | 3511 | Distribution of electricity | http://www.aet.ch | 
| Aziende Industriali Mendrisio (AIM) | Via V. Vela 9 | Mendrisio | 3512 | Distribution of gaseous fuels through mains | http://www.aimonline.ch | 
| Aziende Industriali di Lugano (AIL) SA |  | Lugano | 3511 | Distribution of electricity | http://www.ail.ch | 
| Aziende Municipalizzate Bellinzona (AMB) | Vicolo Muggiasca 1a | Bellinzona | 3513 | Distribution of electricity | http://www.amb.ch | 
| BEBAG Bioenergie Bätterkinden AG |  | Bätterkinden | 7112 | Engineering activities and related technical consultancy | http://www.bebag-bioenergie.ch | 
| BEC AG |  | Aarau | 3511 | Business and other management consultancy activities | http://www.becpower.com | 
| BKW Energie AG |  | Bern | 3511 | Production of electricity | http://www.bkw.ch | 
| Bas-Valais Energie SA |  | Vouvry | 3511 | Production of electricity |  | 
| Bielersee Kraftwerke AG BIK |  | Biel/Bienne | 3511 | Other professional, scientific and technical activities n.e.c. | http://www.bielerseekraftwerke.ch | 
| Blinnenwerk AG, Blinag | Gasse | Reckingen VS | 3511 | Production of electricity |  | 
| CIMO Compagnie industrielle de Monthey SA |  | Monthey | 3513 | Distribution of electricity | http://www.cimo-sa.ch | 
| CKW AG |  | Luzern | 3511 | Activities of holding companies | http://www.ckw.ch | 
| Calancasca AG | Camosàtt 7 | Roveredo GR | 3511 | Production of electricity |  | 
| Calore SA |  | Locarno | 3511 | Production of electricity | http://www.ses.ch | 
| Compagnie Industrielle et Commerciale du Gaz SA | Vevey | 3522 | Distribution of gaseous fuels through mains | http://www.holdigaz.ch | 
| Compagnie des Forces Motrices d'Orsières - FMO SA | Case postale 29 | Orsières | 3511 | Construction of utility projects for fluids | http://www.cfmo.ch | 
| Corlitum AG |  | Horn | 3513 | Distribution of electricity | http://www.horn.ch | 
| Cosvegaz SA |  | Cossonay-Ville | 3522 | Distribution of gaseous fuels through mains | http://www.cosvegaz.ch | 
| EBL (Genossenschaft Elektra Baselland) |  | Liestal | 3513 | Distribution of electricity | http://www.ebl.ch | 
| EBM (Genossenschaft Elektra Birseck) |  | Münchenstein | 3513 | Activities of holding companies | http://www.primeo-energie.ch | 
| EDJ, ENERGIE DU JURA S.A. |  | Delémont | 3511 | Distribution of electricity | http://www.edj.ch | 
| EGH Elektro-Genossenschaft Hünenberg |  | Hünenberg | 3513 | Distribution of electricity | http://www.egh.ch | 
| EKT AG |  | Arbon | 3511 | Distribution of electricity | http://www.ekt.ch | 
| EKT Energie AG |  | Arbon | 3511 | Production of electricity | http://www.ekt.ch | 
| EKT Holding AG |  | Arbon | 6420 | Activities of holding companies | http://www.ekt.ch | 
| ENAG Energiefinanzierungs AG | Gotthardstrasse 6 | Ibach | 3514 | Trade of electricity | http://www.enag.biz | 
| ENERGIE USTER AG |  | Uster | 3513 | Distribution of electricity | http://www.energieuster.ch | 
| EOS HOLDING SA |  | Lausanne | 3511 | Activities of holding companies | http://www.eosholding.ch | 
| EPS Energie Pool Schweiz AG |  | Zürich | 6202 | Computer consultancy activities | http://www.energie-pool.ch | 
| ETRANS AG |  | Baden | 8299 | Other business support service activities n.e.c. | http://www.etrans.ch | 
| EV Energieversorgung Biberist |  | Biberist | 3512 | Distribution of electricity | http://www.ev-biberist.ch | 
| EVN Energieversorgung Nikolai AG | Bahnhofstrasse 5 | St. Niklaus VS | 3513 | Distribution of electricity | http://www.evnikolai.ch | 
| EVR Energieversorgung Raron AG |  | Raron | 3513 | Distribution of electricity | http://www.evraron.ch | 
| EVS Energieversorgung Schänis AG |  | Schänis | 3513 | Distribution of electricity | http://www.ev-schaenis.ch | 
| EVS Erdgasversorgung Sarganserland AG |  | Mels | 3522 | Distribution of gaseous fuels through mains | http://www.evs-ag.ch | 
| EVWR Energiedienste Visp - Westlich Raron AG | Bahnhofplatz 1b | Visp | 3513 | Distribution of electricity | http://www.evwr.ch | 
| EW GOMS Holding AG |  | Ernen | 3511 | Production of electricity | https://www.ewgoms.ch | 
| EW Höfe AG |  | Freienbach | 3513 | Distribution of electricity | http://www.ewh.ch | 
| EW WALD AG |  | Wald ZH | 3511 | Production of electricity | http://www.ew-wald.ch | 
| EWA-energieUri AG |  | Altdorf UR | 3511 | Distribution of electricity | http://www.ewa.ch | 
| EWBN Elektrizitätswerk Brig-Naters AG |  | Gamsen | 3511 | Production of electricity | http://www.enbag.ch | 
| EWD |  | Derendingen | 3513 | Distribution of electricity | http://www.ewd-derendingen.ch | 
| EWD Elektrizitätswerk Davos AG |  | Davos Platz | 3511 | Distribution of electricity | http://www.ewd.ch | 
| EWL Genossenschaft |  | Lauterbrunnen | 3511 | Distribution of electricity | http://www.ewl.ch | 
| EWS AG |  | Ibach | 3512 | Distribution of electricity | http://www.ews.ch | 
| EWS Energie AG |  | Reinach AG | 3513 | Distribution of electricity | http://www.ews-energie.ch | 
| EWZ Elektrizitätswerk Zermatt AG |  | Zermatt | 3511 | Distribution of electricity | http://ew.zermatt.ch | 
| Edisun Power Europe AG |  | Zürich | 3511 | Activities of holding companies | http://www.edisunpower.com | 
| Electra-Massa AG | Bammattenweg 27a | Naters | 3511 | Distribution of electricity | http://www.alpiq.ch/unser-angebot/unsere-anlagen/wasserkraft/speicherkraftwerke/massa-storage-power-station.jsp | 
| Electricité de la Lienne SA |  | Sion | 3511 | Production of electricity | http://www.esr.ch | 
| Elektra Fulenbach (EFU) |  | Fulenbach | 3513 | Distribution of electricity | http://www.elektrafulenbach.ch | 
| Elektrizitäts- und Wasserwerk Wettingen |  | Wettingen | 3513 | Distribution of electricity | http://www.ew-wettingen.ch | 
| Elektrizitäts- und Wasserwerk der Stadt Buchs | Grünaustrasse 31 | Buchs | 3513 | Distribution of electricity | http://www.ewbuchs.ch | 
| Elektrizitäts-Genossenschaft Siggenthal |  | Nussbaumen AG | 3513 | Distribution of electricity | http://www.egs-strom.ch | 
| Elektrizitätsversorgung Kaltbrunn AG |  | Kaltbrunn | 3511 | Electrical installation | http://www.evk.ch | 
| Elektrizitätswerk Bürglen AG |  | Bürglen TG | 3511 | Distribution of electricity | http://www.ewbuerglen.ch | 
| Elektrizitätswerk Grindelwald AG |  | Grindelwald | 3511 | Distribution of electricity | http://www.ewg.ch | 
| Elektrizitätswerk Heiden AG |  | Heiden | 3511 | Distribution of electricity | http://www.ewheiden.ch | 
| Elektrizitätswerk Jona-Rapperswil AG |  | Jona | 3511 | Distribution of electricity | http://www.ewjr.ch | 
| Elektrizitätswerk Obergoms AG |  | Münster VS | 3513 | Distribution of electricity | http://www.ewobergoms.ch | 
| Elektrizitätswerk Obwalden |  | Kerns | 3511 | Distribution of electricity | http://www.ewo.ch | 
| Elektrizitätswerk Rümlang Genossenschaft |  | Rümlang | 3513 | Distribution of electricity | http://www.ewruemlang.ch | 
| Elektrizitätswerk Samnaun | Kirchweg 23 | Samnaun-Compatsch | 3511 | Distribution of electricity | http://www.ewsamnaun.ch | 
| Elektrizitätswerk Schmerikon AG | Hauptstrasse 81 | Schmerikon | 3512 | Distribution of electricity | http://www.ewschmerikon.ch | 
| Elektrizitätswerk Stadt Schaffhausen | Mühlenstrasse 19 | Schaffhausen | 3511 | Distribution of electricity | http://www.shpower.ch | 
| Elektrizitätswerk Ursern |  | Andermatt | 3511 | Distribution of electricity | http://www.ew-ursern.ch | 
| Elektrizitätswerk Uznach AG |  | Uznach | 3513 | Distribution of electricity | http://www.ewu.ch | 
| Elektrizitätswerk Vilters-Wangs | Vilterserstrasse 60 | Wangs | 3511 | Production of electricity | http://www.evw.ch | 
| Elektrizitätswerk der Stadt Zürich |  | Zürich | 3511 | Distribution of electricity | http://www.ewz.ch | 
| Elektrizitätswerk des Kantons Schaffhausen AG |  | Schaffhausen | 3511 | Production of electricity | http://www.eks.ch | 
| Elektrizitätswerke des Kantons Zürich (EKZ) |  | Zürich | 3513 | Distribution of electricity | http://www.ekz.ch | 
| EnAlpin AG |  | Visp | 3511 | Activities of holding companies | http://www.enalpin.com | 
| EnBAG AG |  | Gamsen | 3513 | Activities of head offices | http://www.enbag.ch | 
| EnBAG Bortel AG |  | Gamsen | 3511 | Distribution of electricity | http://www.enbag.ch | 
| EnBAG Netze AG |  | Gamsen | 3512 | Transmission of electricity | http://www.enbag.ch | 
| EnBAG Saltina AG |  | Gamsen | 3511 | Distribution of electricity | http://www.enbag.ch | 
| Energie 360 Grad AG |  | Zürich | 3522 | Distribution of gaseous fuels through mains | http://www.erdgaszuerich.ch | 
| Energie Belp AG |  | Belp | 3513 | Distribution of electricity | http://www.energie-belp.ch | 
| Energie Biberist AG EBAG in Liquidation | Poststrasse 8 | Biberist | 3513 | Distribution of electricity | http://www.aek.ch | 
| Energie Electrique du Simplon SA (E.E.S.) | Dorfplatte 1 | Simplon Dorf | 3511 | Production of electricity | http://www.alpiq.com/de/unser-angebot/unsere-anlagen/wasserkraft/speicherkraftwerke/simplon-storage-power-stations.jsp | 
| Energie Freiamt AG |  | Muri AG | 3511 | Distribution of electricity | http://www.efa-freiamt.ch | 
| Energie Gossau AG | Berghofstrasse 4 | Gossau ZH | 3513 | Distribution of electricity | http://www.energiegossau.ch | 
| Energie Opfikon AG |  | Opfikon | 3511 | Production of electricity | http://www.energieopfikon.ch | 
| Energie Seeland AG |  | Lyss | 3513 | Distribution of electricity | http://www.esag-lyss.ch | 
| Energie Service Biel/Bienne (ESB) |  | Biel/Bienne | 3513 | Distribution of electricity | http://www.esb.ch | 
| Energie Thun AG |  | Thun | 3513 | Distribution of electricity | http://www.energiethun.ch | 
| Energie Uetikon AG |  | Uetikon am See | 3513 | Distribution of electricity | http://www.energie-uetikon.ch | 
| Energie Wasser Bern |  | Bern | 3511 | Distribution of electricity | http://www.ewb.ch | 
| Energie Zürichsee Linth AG |  | Jona | 3522 | Distribution of gaseous fuels through mains | http://www.erdgasobersee.ch | 
| Energie- und Wasserversorgung Oberburg |  | Oberburg | 3513 | Distribution of electricity | http://www.ew-o.ch | 
| Energiebüro AG |  | Zürich | 7112 | Engineering activities and related technical consultancy | http://www.energieburo.ch | 
| Energiedienst Holding AG |  | Laufenburg | 3511 | Activities of head offices | http://www.energiedienst.ch | 
| Energieversorgung Büren AG |  | Büren an der Aare | 3513 | Distribution of electricity | http://www.ev-bueren.ch | 
| Energy Financing Team (Switzerland) AG |  | Horn | 3514 | Activities of head offices | http://www.eft-group.net | 
| Engadiner Kraftwerke AG |  | Zernez | 3511 | Production of electricity | http://www.engadin-strom.ch | 
| Eniwa Holding AG |  | Buchs AG | 3513 | Activities of holding companies | http://www.ibaarau.ch | 
| Entsorgung + Recycling Zürich (ERZ) | Hagenholzstrasse 110 | Zürich | 3700 | Collection of non-hazardous waste | http://www.erz.ch | 
| Entsorgung Zimmerberg |  | Horgen | 3511 | Production of electricity | https://www.ezi.ch | 
| Erdgas AG Laufental-Thierstein (GASAG) |  | Laufen | 3522 | Distribution of gaseous fuels through mains | http://www.ebm.ch | 
| Erdgas Ostschweiz AG |  | Zürich | 3522 | Distribution of gaseous fuels through mains | http://www.erdgasostschweiz.ch | 
| Erdgas Regio AG |  | Jona | 3523 | Trade of gas through mains | http://www.erdgasregio.ch | 
| Erdgas Thunersee AG | Fabrikstrasse 8 | Interlaken | 7112 | Engineering activities and related technical consultancy | http://www.erdgasthunersee.ch | 
| Erdgas Zentralschweiz AG |  | Luzern | 3522 | Distribution of gaseous fuels through mains | http://www.egz.ch | 
| Erdgasversorgung Bündner Rheintal AG Ebrag | Felsenaustrasse 29 | Chur | 3522 | Distribution of gaseous fuels through mains | http://www.ibchur.ch | 
| Erneuerbare Gase Linth AG (EG Linth) | Fronalpstrasse 7 | Glarus | 3522 | Distribution of gaseous fuels through mains | http://www.wbg-glarus.ch/html/erdgas_linth_ag.html | 
| FMV SA |  | Sion | 3511 | Distribution of electricity | http://www.fmv.ch | 
| FZSONICK SA |  | Stabio | 2720 | Manufacture of batteries and accumulators | http://www.fzsonick.com | 
| Fenice Services AG |  | Zürich | 3514 | Activities of holding companies | http://www.avelarenergy.com | 
| Fernwärme Chur AG | Felsenaustrasse 29 | Chur | 3530 | Steam and air conditioning supply | http://www.fernwaerme-chur.ch | 
| Fernwärme Siggenthal AG |  | Nussbaumen AG | 3530 | Steam and air conditioning supply | http://www.fernwaerme-ag.ch | 
| Fernwärme Zürich AG in Liquidation | Kehrichtheizkraftwerk | Zürich | 3530 | Steam and air conditioning supply | http://www.fernwaerme-zuerich.ch | 
| Flims Electric AG |  | Flims Dorf | 3511 | Distribution of electricity | http://www.flimselectric.ch | 
| Flims Trin Energie AG |  | Flims Dorf | 3513 | Distribution of electricity | http://www.flimselectric.ch | 
| Forces Motrices Hongrin-Léman S.A. (FMHL) |  | Château-d'Oex | 3511 | Production of electricity | http://www.fmhl.ch | 
| Forces Motrices de Conches S.A. |  | Ernen | 3511 | Production of electricity | http://www.gkw-ag.ch | 
| Forces Motrices de Martigny-Bourg S.A. |  | Martigny | 3511 | Production of electricity | http://www.eos.ch/de/home/energie/production/forces_motrices_de_martigny-bourg.htm | 
| Forces Motrices de Mauvoisin SA |  | Sion | 3511 | Production of electricity | http://www.axpo.ch/axpo/de/hydroenergie/wissen/partnerkraftwerkevonaxpoaggefuehrt/mauvoisin_ag.html | 
| Forces Motrices de l'Avançon SA |  | Bex | 3511 | Distribution of electricity | http://www.fma-sa.ch | 
| GEBNET AG |  | Aetigkofen | 3512 | Transmission of electricity | http://www.gebnet.ch | 
| GRAVAG Energie AG |  | St. Margrethen SG | 3522 | Distribution of gaseous fuels through mains | http://www.gravag.ch | 
| Gas- und Wasserwerke Schaffhausen und Neuhausen am Rheinfall | Mühlenstrasse 19 | Schaffhausen | 3522 | Distribution of gaseous fuels through mains | http://www.shpower.ch | 
| Gasverbund Mittelland AG |  | Arlesheim | 3522 | Distribution of gaseous fuels through mains | http://www.gvm-ag.ch | 
| Gasversorgung Romanshorn AG |  | Romanshorn | 3522 | Distribution of gaseous fuels through mains | http://www.erdgas-romanshorn.ch | 
| Gaznat SA Société pour l'Approvisionnement et le Transport du Gaz Naturel en Suisse Romande | Place Chauderon | Lausanne | 3523 | Trade of gas through mains | http://www.www.gaznat.ch | 
| Gazoduc SA Sion | Rue de l'Industrie 43 | Sion | 3522 | Distribution of gaseous fuels through mains | http://www.esr.ch | 
| Gemeindebetriebe Muri bei Bern (GB) |  | Muri b. Bern | 3522 | Distribution of gaseous fuels through mains | http://www.gbm-muri.ch/ | 
| Gemeindeverband für Abfallentsorgung in Graubünden | Rheinstrasse 28 | Trimmis | 3511 | Production of electricity | http://www.gevag.ch | 
| Gemeindewerke Dietlikon | Hofwiesenstrasse 32 | Dietlikon | 3513 | Distribution of electricity | http://www.dietlikon.ch/gemeindewerke.103.0.html | 
| Gemeindewerke Erstfeld |  | Erstfeld | 3513 | Distribution of electricity | http://www.gemeindewerke-erstfeld.ch | 
| Gemeindewerke Rüti | Werkstrasse 27 | Rüti | 3513 | Distribution of electricity | http://www.gwrueti.ch | 
| Genedis SA |  | Vernayaz | 3511 | Production of electricity | http://www.seic.net | 
| Genossenschaft EW Münchwilen (EWM) |  | Münchwilen TG | 9499 | Activities of other membership organisations n.e.c. | http://www.ewmuenchwilen.ch | 
| Genossenschaft EW Romanshorn |  | Romanshorn | 3513 | Distribution of electricity | http://www.ewromanshorn.ch | 
| Genossenschaft Elektra Bucheggberg |  | Aetigkofen | 3513 | Distribution of electricity | http://www.elektra-bucheggberg.ch | 
| Genossenschaft Elektra Sissach |  | Sissach | 3513 | Distribution of electricity | http://www.elektra-sissach.ch | 
| Genossenschaft Elektra, Jegenstorf |  | Jegenstorf | 3513 | Distribution of electricity | http://www.elektra.ch | 
| Genossenschaft Licht- und Kraftwerke Glattfelden |  | Glattfelden | 3511 | Production of electricity | http://www.lkwg.ch | 
| Genossenschaft Wasserversorgung Rapperswil-Jona | Jona | 3600 | Water collection, treatment and supply | http://www.wasser-jona.ch | 
| Geopower Basel AG in Liquidation | Margarethenstrasse 40 | Basel | 3511 | Production of electricity | http://www.geopower-basel.ch | 
| Glattwerk AG |  | Dübendorf | 3513 | Distribution of electricity | http://www.glattwerk.ch | 
| Grande Dixence SA |  | Sion | 3511 | Distribution of electricity | http://www.grande-dixence.ch | 
| Grischelectra AG | Ringstrasse 10 | Chur | 3514 | Trade of electricity |  | 
| Groupe E Celsius SA | Maison de Ville | Fribourg | 3523 | Trade of gas through mains |  | 
| Groupe E SA |  | Granges-Paccot | 3511 | Distribution of electricity | http://www.groupe-e.ch | 
| Gruyère Energie S.A. |  | Bulle | 3513 | Distribution of electricity | http://www.gruyere-energie.ch | 
| HYDRO Exploitation SA | Bâtiment le Dix | Sion | 3511 | Production of electricity | http://www.hydro-exploitation.ch | 
| Heizwerk Uri AG |  | Attinghausen | 3511 | Production of electricity | http://www.heizwerk-uri.ch | 
| Holdigaz SA | Avenue Général-Guisan 28 | Vevey | 3522 | Activities of holding companies | http://www.holdigaz.ch | 
| Hydro-Rhône SA | Rue de la Dixence 9 | Sion | 3511 | Production of electricity |  | 
| IB Langenthal AG |  | Langenthal | 3513 | Distribution of electricity | http://www.ib-langenthal.ch | 
| IB Wohlen AG |  | Wohlen AG | 3513 | Distribution of electricity | http://www.ibw.ag | 
| IBB Erdgas AG | Gaswerkstrasse 5 | Brugg AG | 3521 | Distribution of gaseous fuels through mains | 
| IBB Holding AG |  | Brugg AG | 6420 | Activities of holding companies | http://www.ibbrugg.ch | 
| IBB Strom AG | Gaswerkstrasse 5 | Brugg AG | 3511 | Production of electricity | http://www.ibbrugg.ch | 
| IBC Energie Wasser Chur (IBC) |  | Chur | 3513 | Distribution of electricity | http://www.ibc-chur.ch | 
| IMC Energy Trading B.V. Amsterdam, Zug Branch | Zug | 3514 | Computer programming activities | http://www.imc.nl | 
| IWB Industrielle Werke Basel |  | Basel | 3513 | Distribution of electricity | http://www.iwb.ch | 
| Industrielle Betriebe Huttwil AG |  | Huttwil | 3513 | Distribution of electricity | http://www.ibhag.ch | 
| Industrielle Betriebe Interlaken (IBI) AG |  | Interlaken | 3513 | Distribution of electricity | http://www.ibi.ch | 
| Industrielle Betriebe Kloten AG |  | Kloten | 3513 | Distribution of electricity | http://www.ibkloten.ch | 
| Industrielle Betriebe Landquart (IBL) |  | Igis | 3821 | Other professional, scientific and technical activities n.e.c. | 
| Industrielle Betriebe Murten |  | Murten | 3512 | Distribution of electricity | http://www.ibmurten.ch | 
| InfraWerkeMünsingen (IWM) |  | Münsingen | 3513 | Distribution of electricity | http://www.inframuensingen.ch | 
| Infrastruktur Zürichsee AG |  | Meilen | 3511 | Production of electricity | http://www.ewmeilen.ch | 
| Juvent SA | route de Tramelan 16 | Saint-Imier | 3511 | Production of electricity | http://www.juvent.ch | 
| KEBAG AG |  | Zuchwil | 3511 | Production of electricity | http://www.kebag.ch | 
| KVA Turgi Kehrichtverwertung | Landstrasse 4 | Turgi | 3513 | Distribution of electricity | http://www.kvaturgi.ch | 
| Kantonales Elektrizitätswerk Nidwalden (EWN) |  | Oberdorf NW | 3511 | Distribution of electricity | http://www.ewn.ch | 
| Kernkraftwerk Gösgen-Däniken AG |  | Däniken SO | 3511 | Production of electricity | http://www.kkg.ch | 
| Kernkraftwerk Leibstadt AG |  | Leibstadt | 3511 | Other professional, scientific and technical activities n.e.c. | http://www.kkl.ch | 
| Kernkraftwerk-Beteiligungsgesellschaft AG (KBG) | Viktoriaplatz 2 | Bern | 6420 | Activities of holding companies | http://www.bkw.ch | 
| Kraftwerk Aegina A.G. | Bahnhofstrasse 1 | Obergesteln | 3511 | Production of electricity | http://www.enalpin.com | 
| Kraftwerk Amsteg AG |  | Amsteg | 3511 | Production of electricity | http://www.sbb.ch | 
| Kraftwerk Augst AG |  | Augst BL | 3511 | Production of electricity | http://www.kwa.ch | 
| Kraftwerk Birsfelden AG |  | Birsfelden | 3511 | Production of electricity | http://www.kw-birsfelden.ch | 
| Kraftwerk Eglisau-Glattfelden AG |  | Zweidlen | 3511 | Production of electricity | http://www.axpo.ch | 
| Kraftwerk Göschenen AG |  | Göschenen | 3511 | Production of electricity | http://www.kw-goeschenen.ch | 
| Kraftwerk Lötschen AG |  | Steg VS | 3511 | Distribution of electricity | http://www.enalpin.com | 
| Kraftwerk Merezenbach AG | Furkastrasse 671 | Münster VS | 3511 | Production of electricity | http://www.hydro-exploitation.ch | 
| Kraftwerk Rupperswil-Auenstein AG |  | Aarau | 3511 | Production of electricity | http://www.nok.ch | 
| Kraftwerk Ryburg-Schwörstadt AG |  | Möhlin | 3511 | Production of electricity | http://www.energiedienst.ch | 
| Kraftwerk Sanetsch AG (KWS) |  | Gsteig b. Gstaad | 3511 | Production of electricity | http://www.bkw-fmb.ch | 
| Kraftwerk Schaffhausen AG |  | Schaffhausen | 3511 | Distribution of electricity | http://www.shpower.ch | 
| Kraftwerk Schächental AG |  | Altdorf UR | 3511 | Production of electricity | http://www.ewa.ch | 
| Kraftwerk Täschbach AG | Dorfstrasse 5 | Täsch | 3511 | Production of electricity |  | 
| Kraftwerk Wassen AG |  | Wassen UR | 3511 | Production of electricity | http://www.kw-wassen.ch | 
| Kraftwerke Dala AG | Hauptstrasse 41 | Inden | 3513 | Distribution of electricity | http://www.kwdala.ch | 
| Kraftwerke Engelbergeraa AG |  | Oberdorf NW | 3511 | Other specialised construction activities n.e.c. | http://www.ewn.ch | 
| Kraftwerke Gougra AG | Avenue du Marché 1 | Sierre | 3511 | Production of electricity | http://www.gougra.ch | 
| Kraftwerke Hinterrhein AG |  | Thusis | 3511 | Production of electricity | http://www.khr.ch | 
| Kraftwerke Ilanz AG (KWI) |  | Ilanz | 2711 | Manufacture of electric motors, generators and transformers | 
| Kraftwerke Linth-Limmern AG (KLL) |  | Linthal | 3511 | Production of electricity | http://www.axpo.com | 
| Kraftwerke Mattmark AG | Dammstrasse 121 | Saas-Grund | 3511 | Production of electricity | http://www.kwm.ch | 
| Kraftwerke Oberhasli AG |  | Innertkirchen | 3511 | Distribution of electricity | http://www.grimselstrom.ch | 
| Kraftwerke Reichenau AG |  | Tamins | 3511 | Production of electricity | http://www.nok.ch/internet/nok/de/energieproduktion/hydraulik/kraftwerke/partner_nok/reichenau.html | 
| Kraftwerke Sarganserland AG (KSL) |  | Vadura | 3511 | Production of electricity |  | 
| Kraftwerke Vorderrhein AG (KVR) |  | Disentis/Mustér | 3511 | Production of electricity |  | 
| Kraftwerke Zervreila AG |  | Vals | 3511 | Production of electricity | http://www.kwz.ch | 
| L'Energie de Sion-Région SA, ESR |  | Sion | 3513 | Distribution of electricity | http://www.esr.ch | 
| Leteygeon SA |  | Hérémence | 3511 | Production of electricity | http://www.esr.ch | 
| Licht- und Wasserwerk AG Kandersteg |  | Kandersteg | 3513 | Distribution of electricity | http://www.lwk.ch | 
| Licht- und Wasserwerk Adelboden AG |  | Adelboden | 3513 | Distribution of electricity | http://www.lwa.ch | 
| Liechtensteinische Gasversorgung | Im Rietacker 4 | Schaan | 3522 | Distribution of gaseous fuels through mains | http://www.lgv.li | 
| Liechtensteinische Kraftwerke |  | Schaan | 3511 | Distribution of electricity | http://www.lkw.li | 
| Limmatkraftwerke AG |  | Baden | 3511 | Production of electricity | http://www.regionalwerke.ch | 
| Lizerne et Morge SA |  | Sion | 3511 | Production of electricity | http://www.esr.ch | 
| Localnet AG |  | Burgdorf | 3513 | Distribution of electricity | http://www.localnet.ch | 
| Lucendro SA | Impianto Lucendro | Airolo | 3511 | Production of electricity | http://www.atel.ch | 
| Misoxer Kraftwerke AG | Andergia | Mesocco | 3511 | Production of electricity | http://www.axpo.ch/axpo/de/hydroenergie/wissen/partnerkraftwerkevonaxpoaggefuehrt/misoxer_kraftwerkeag.html | 
| Müve Biel-Seeland AG |  | Brügg BE | 3511 | Production of electricity | http://www.mueve.ch | 
| Nagra, Nationale Genossenschaft für die Lagerung radioaktiver Abfälle | Wettingen | 3900 | Remediation activities and other waste management services | http://www.nagra.ch | 
| Nahwärmeverbund Stadtsäge AG |  | St. Gallen | 1610 | Production of electricity | http://www.stadtsaege.ch | 
| Nant de Drance SA | Le Châtelard | Finhaut | 3511 | Production of electricity | http://www.nant-de-drance.ch | 
| NetZulg AG |  | Steffisburg | 3513 | Distribution of electricity | http://www.netzulg.ch | 
| Nord Stream AG |  | Zug | 3522 | Distribution of gaseous fuels through mains | https://www.nord-stream.com | 
| Nuklearforum Schweiz |  | Bern 14 | 8299 | Other business support service activities n.e.c. | http://www.sva-aspea.ch | 
| OMPEX AG |  | Zürich | 3514 | Business and other management consultancy activities | http://www.ompex.ch | 
| Officine Idroelettriche della Maggia SA |  | Locarno | 3511 | Distribution of electricity | http://www.ofima.ch | 
| Officine idroelettriche di Blenio SA |  | Olivone | 3511 | Distribution of electricity | http://www.ofible.ch | 
| Ovra electrica Ferrera SA, OEFT |  | Trun | 3513 | Distribution of electricity |  | 
| Ovras Electricas Frisal SA |  | Tavanasa | 3511 | Production of electricity | http://www.ems-group.com | 
| PanEU Trade AG | Murisstrasse 69 | Bern | 3514 | Trade of electricity |  | 
| REFUNA AG |  | Döttingen | 3530 | Steam and air conditioning supply | http://www.refuna.ch | 
| RWSG Regionale Wasserversorgung St. Gallen AG | St. Leonhardstrasse 15 | St. Gallen | 3600 | Water collection, treatment and supply | http://www.rwsg.ch | 
| Regio Energie Solothurn |  | Solothurn | 3511 | Distribution of electricity | http://www.regioenergie.ch | 
| Regionalwerke AG Baden |  | Baden | 3513 | Distribution of electricity | http://www.regionalwerke.ch | 
| Regionalwerke Holding AG Baden | Haselstrasse 15 | Baden | 3511 | Activities of holding companies | http://www.regionalwerke.ch | 
| Renergia Zentralschweiz AG |  | Perlen | 3511 | Production of electricity | http://www.renergia.ch | 
| Repower AG |  | Poschiavo | 3511 | Activities of holding companies | http://www.repower.com | 
| Rheinkraftwerk Neuhausen AG (RKN) |  | Neuhausen am Rheinfall | 3511 | Production of electricity | http://www.enalpin.com | 
| Rhiienergie AG (rhiienergie) |  | Tamins | 3513 | Distribution of electricity | http://www.rhiienergie.ch | 
| Rhonewerke AG |  | Ernen | 3511 | Activities of holding companies | http://www.hydro-exploitation.ch/wasserkraftanlagen/rhonewerke.html | 
| Romande Energie Holding SA |  | Morges | 3511 | Distribution of electricity | http://www.romande-energie.ch | 
| Romande Energie SA |  | Morges | 3513 | Distribution of electricity | http://www.romande-energie.ch | 
| SALANFE S.A. |  | Miéville (Vernayaz) | 3511 | Production of electricity | http://www.alpiq.ch | 
| SAPPRO SA | Route de Vernier | Châtelaine | 4950 | Transport via pipeline | http://www.sappro.ch | 
| SET Swiss Energy Trading AG |  | Zürich | 4671 | Wholesale of solid, liquid and gaseous fuels and related products | http://www.swiss-energy-trading.ch | 
| SIE SA |  | Crissier | 3513 | Distribution of electricity | http://www.sie.ch | 
| SN Energie AG |  | Schwanden GL | 3511 | Production of electricity | http://www.snenergie.ch | 
| ST Biel-Seeland AG |  | Brügg BE | 3700 | Sewerage | http://www.mueve.ch/de/str/start.asp | 
| SWG |  | Grenchen | 3513 | Distribution of electricity | http://www.swg.ch | 
| SWL Energie AG |  | Lenzburg | 3513 | Distribution of electricity | http://www.swl.ch | 
| SWL Wasser AG |  | Lenzburg | 3600 | Water collection, treatment and supply | http://www.swl.ch | 
| Sankt Galler Stadtwerke | St. Leonhard-Strasse 15 | St. Gallen | 3511 | Distribution of electricity | http://www.sgsw.ch | 
| Satom SA | Zone industrielle | Monthey 1 | 3513 | Distribution of electricity | http://www.satom-monthey.ch | 
| Seelandgas AG |  | Lyss | 3522 | Distribution of gaseous fuels through mains | http://www.seelandgas.ch | 
| Service intercommunal de gestion SIGE | Quai Maria-Belgia 18 | Vevey | 3600 | Water collection, treatment and supply | http://www.sige.ch | 
| Services Industriels de Bagnes | Place de Curala 5 | Le Châble | 3513 | Distribution of electricity | http://www.sibagnes.ch | 
| Services industriels Lausanne | Place Chauderon 23 | Lausanne | 3513 | Distribution of electricity | http://www.lausanne.ch/sil | 
| Services industriels de Genève | du Château-Bloch | Le Lignon | 3513 | Distribution of electricity |  | 
| Sierre-Energie SA Siesa |  | Sierre | 3513 | Distribution of electricity | http://www.siesa.ch | 
| Simmentaler Kraftwerke AG |  | Erlenbach im Simmental | 3511 | Production of electricity | http://www.bkw.ch | 
| Società Elettrica Sopracenerina SA (SES) |  | Locarno | 3511 | Distribution of electricity | http://www.ses.ch | 
| Société Electrique Intercommunale de la Côte SA |  | Gland | 3511 | Distribution of electricity | http://www.seicgland.ch | 
| Société Electrique des Forces de l'Aubonne SA (SEFA) | Case Postale 134 | Aubonne | 3511 | Distribution of electricity | http://www.sefa.ch | 
| Société des Forces Motrices du Grand-St-Bernard SA | Route de Raveire 5 | Bourg-St-Pierre | 3511 | Production of electricity | http://www.cfmo.ch | 
| Société des Forces Électriques de La Goule SA |  | St-Imier | 3511 | Distribution of electricity | http://www.lagoule.ch | 
| Société des Forces-Motrices de Chancy-Pougny SA | Chemin des Plattières | Avully | 3511 | Production of electricity | http://www.www.sfmcp.ch | 
| Société du Gaz de la Plaine du Rhône SA | Chemin des Iles | Aigle | 3523 | Trade of gas through mains | http://www.cicgaz.ch | 
| Sogaval SA | Rue de l'Industrie 45 | Sion | 3522 | Distribution of gaseous fuels through mains | http://www.esr.ch | 
| Spontis SA |  | Avenches | 3513 | Distribution of electricity | http://www.spontis.ch | 
| St. Gallisch-Appenzellische Kraftwerke AG |  | St. Gallen | 3511 | Distribution of electricity | http://www.sak.ch | 
| StWZ Energie AG |  | Zofingen | 3513 | Distribution of electricity | http://www.stwz.ch | 
| Stadtwerk Winterthur | Untere Vogelsangstrasse 11 | Winterthur | 3513 | Distribution of electricity | http://www.stadtwerk.winterthur.ch | 
| Steiner Energie AG |  | Malters | 3513 | Distribution of electricity | http://www.steiner-energie.ch | 
| Städtische Betriebe Olten (SBO) |  | Olten | 3513 | Distribution of electricity | http://www.aen.ch | 
| Städtische Werke Schaffhausen und Neuhausen am Rheinfall | Mühlenstrasse 19 | Schaffhausen | 3513 | Distribution of electricity | http://www.shpower.ch | 
| Suisse Power&Gas SA in liquidazione |  | Morbio Inferiore | 3523 | Trade of gas through mains | http://www.suissegas.eu | 
| Swissgas, Schweizerische Aktiengesellschaft für Erdgas | Zürich | 3522 | Distribution of gaseous fuels through mains | http://www.swissgas.ch | 
| Swissgrid AG |  | Aarau | 3512 | Transmission of electricity | http://www.swissgrid.ch | 
| Swisspower Energy AG in Liquidation |  | Zürich | 3513 | Distribution of electricity | http://www.swisspower.ch | 
| TBS Suhr Holding AG |  | Suhr | 3512 | Activities of holding companies | http://www.tbsuhr.ch | 
| Technische Betriebe Glarus |  | Glarus | 3513 | Distribution of electricity | http://www.tbglarus.ch | 
| Technische Betriebe Glarus Süd |  | Schwanden GL | 3513 | Distribution of electricity | http://www.tbgs.ch | 
| Technische Betriebe Rorschach | Promenadenstrasse 74 | Rorschach | 3513 | Distribution of electricity | https://www.rorschach.ch/technischebetriebe | 
| Technische Betriebe Weinfelden AG | Weststrasse 8 | Weinfelden | 3522 | Distribution of gaseous fuels through mains | http://www.tbweinfelden.ch | 
| Technische Betriebe Wil |  | Wil | 3513 | Distribution of electricity | http://www.tb-wil.ch | 
| Terravent AG | Industriestrasse 6 | Luzern | 3511 | Activities of holding companies | http://www.terravent.ch | 
| Thurwerke AG |  | Wattwil | 3513 | Distribution of electricity | http://www.thurwerke.ch | 
| Transitgas AG |  | Zürich | 3522 | Distribution of gaseous fuels through mains | http://www.transitgas.ch | 
| Trianel Suisse AG in Liq. |  | Solothurn | 3514 | Trade of electricity | http://www.trianel.ch | 
| Unigaz S.A. Union Interrégionale pour le transport du gaz naturel | Route de Chantemerle 1 | Granges-Paccot | 3522 | Distribution of gaseous fuels through mains | 
| VARELLION Holding AG |  | Susten | 3511 | Distribution of electricity | http://www.rell.ch | 
| VED Visp Energie Dienste AG | Bahnhofplatz 1b | Visp | 3513 | Distribution of electricity | http://www.ved.ch | 
| Valgrid SA |  | Sion | 3512 | Transmission of electricity | http://www.valgrid.ch | 
| Verband Schweizerischer Elektrizitätsunternehmen (VSE) | Aarau | 9411 | Activities of business and employers membership organisations | http://www.strom.ch | 
| Verzasca SA |  | Lugano | 3511 | Production of electricity |  | 
| Viteos SA |  | Neuchâtel | 3511 | Distribution of electricity | http://www.viteos.ch | 
| WWZ AG |  | Zug | 3513 | Activities of holding companies | http://www.wwz.ch | 
| WWZ Hochdorf AG | Industriestrasse | Hochdorf | 3513 | Distribution of electricity | http://www.ewhochdorf.ch | 
| Wasser Uetikon AG |  | Uetikon am See | 3600 | Water collection, treatment and supply | http://www.wasser-uetikon.ch | 
| Wasser- und Elektrizitätswerk Steinhausen | Sennweidstrasse 4 | Steinhausen | 3513 | Distribution of electricity | http://www.west-steinhausen.ch | 
| Wasser- und Elektrizitätswerk Walenstadt | Bahnhofstrasse 5 | Walenstadt | 3513 | Distribution of electricity | http://www.ew-walenstadt.ch | 
| Wasserverbund Seeland AG |  | Biel/Bienne | 3600 | Water collection, treatment and supply | http://www.wvsag.ch | 
| Wasserversorgung Zürich | Hardhof 9 | Zürich | 3600 | Water collection, treatment and supply | http://www.stadt-zuerich.ch/wasserversorgung | 
| Werke am Zürichsee AG |  | Küsnacht ZH | 3513 | Distribution of electricity | http://www.werkezuerichsee.ch | 
| Weseta Kraftwerke AG |  | Engi | 3511 | Production of electricity |  | 
| aventron AG |  | Münchenstein | 3511 | Activities of holding companies | http://aventron.com | 
| die werke versorgung wallisellen ag |  | Wallisellen | 3513 | Distribution of electricity | http://www.diewerke.ch | 
| ebs Energie AG |  | Schwyz | 3511 | Activities of holding companies | http://www.ebs.swiss | 
| ebs Erdgas + Biogas AG |  | Schwyz | 3522 | Distribution of gaseous fuels through mains | http://www.ebs.swiss | 
| ewl Energie Wasser Luzern Holding AG |  | Luzern | 3513 | Activities of holding companies | http://www.ewl-luzern.ch | 
| onyx Energie AG |  | Langenthal | 3511 | Activities of holding companies | http://www.onyx.ch | 
| vo énergies holding SA |  | Vallorbe | 3511 | Activities of holding companies | http://www.voenergies.ch | 
| Électricité d'Émosson SA | Centrale de la Bâtiaz | Martigny | 3511 | Production of electricity | http://www.emosson.ch |