Energie Control Austria (E-Control)
E-mail: office@e-control.at
Web: www.e-control.at

Commission de Régulation de l'Electricité et du Gaz (CREG)
E-mail: info@creg.be
Web: http://www.creg.be/

Energy and Water Regulatory Commission / Комисия за енергийно и водно регулиране (EWRC - КЕВР)
E-mail: dker@dker.bg
Web: http://www.dker.bg/

Hrvatska energetska regulatorna agencija (HERA)
E-mail: hera@hera.hr
Web: http://www.hera.hr/

Cyprus Energy Regulatory Authority (CERA)
E-mail: regulator.cy@cera.org.cy
Web: http://www.cera.org.cy/

Energetický Regulační Úřad (ERÚ) / Energy Regulatory Office (ERO)
E-mail: podatelna@eru.cz
Web: http://www.eru.cz/

Forsyningstilsynet - Danish Utility Regulator (DUR)
E-mail: post@forsyningstilsynet.dk
Web: http://forsyningstilsynet.dk/

E-mail: registry@eftasurv.int
Web: http://www.eftasurv.int/

Konkurentsiamet - Estonian Competition Authority (ECA)
E-mail: info@konkurentsiamet.ee
Web: http://www.konkurentsiamet.ee/

Energiavirasto (EV) - Energy Authority
E-mail: kirjaamo@energiavirasto.fi
Web: http://www.energiavirasto.fi/

Commission de Régulation de l'Énergie (CRE)
E-mail: com@cre.fr
Web: http://www.cre.fr/

Federal Network Agency for Electricity, Gas, Telecommunications, Posts and Railway (Bundesnetzagentur - BNetzA)
E-mail: info@bnetza.de
Web: http://www.bundesnetzagentur.de/

Ρυθμιστική Αρχή Αποβλήτων, Ενέργειας και Υδάτων / Regulatory Authority for Energy, Waste and Water (RAAEY)
E-mail: info@rae.gr
Web: http://www.rae.gr/

Magyar Energetikai és Közmű-szabályozási Hivatal (MEKH)
E-mail: mekh@mekh.hu
Web: http://www.mekh.hu/

Umhverfis- og orkustofnun / The Icelandic Environment and Energy Agency
E-mail: uos@uos.is 
Web: https://uos.is/

An Coimisiún um Rialáil Fóntais / Commission for Regulation of Utilities (CRU)
E-mail: info@cru.ie
Web: http://www.cru.ie/

Autorità di Regolazione per Energia Reti e Ambiente (ARERA)/ Regulatory Authority for Energy, Networks and Environment
E-mail: info@arera.it
Web: http://www.autorita.energia.it/

Sabiedrisko pakalpojumu regulēšanas komisija / Public Utilities Commission (PUC)
E-mail: sprk@sprk.gov.lv
Web: http://www.sprk.gov.lv/

Valstybinė energetikos reguliavimo taryba​ / National Energy Regulatory Council (NERC)
E-mail: info@vert.lt
Web: https://www.vert.lt/

Institut Luxembourgeois de Régulation (ILR)
E-mail: info@ilr.lu
Web: https://web.ilr.lu/

Regulator for Energy & Water Services (REWS)
E-mail: enquiry@rews.org.mt
Web: http://www.rews.org.mt/

Autoriteit Consument & Markt (ACM)
E-mail: info@acm.nl
Web: http://www.acm.nl/

NORWAY (Non-voting member)

The Norwegian Energy Regulatory Authority (RME)
E-mail: rme@nve.no
Web: https://www.nve.no/reguleringsmyndigheten/

Urząd Regulacji Energetyki / Energy Regulatory Office (URE / ERO)
E-mail: ure@ure.gov.pl
Web: http://www.ure.gov.pl/

Entidade Reguladora dos Serviços Energéticos / Energy Services Regulatory Authority (ERSE)
E-mail: erse@erse.pt
Web: http://www.erse.pt/

Antoritatea Națională de Reglementare în domeniul Energiei / Romanian Energy Regulatory Authority (ANRE)
E-mail: anre@anre.ro
Web: http://www.anre.ro/

Úrad pre reguláciu sieťových odvetví (URSO) / Regulatory Office for Network Industries (RONI)
E-mail: urso@urso.gov.sk
Web: http://www.urso.gov.sk/

Agencija za energijo / Energy Agency
E-mail: info@agen-rs.si
Web: http://www.agen-rs.si/

Comisión Nacional de los Mercados y la Competencia /​ National Commission for Markets and Competition (CNMC)
E-mail: de@cnmc.es
Web: http://www.cnmc.es/

Energimarknadsinspektionen / Swedish Energy Markets Inspectorate (Ei)
E-mail: registrator@ei.se
Web: http://www.ei.se/