MEDREG hosts a growing number of members, formed by the energy regulatory authorities of 23 Mediterranean countries: Albania, Algeria, Bosnia and Herzegovina, Croatia, Cyprus, Egypt, France, Greece, Israel, Italy, Jordan, Lebanon, Libya, Malta, Montenegro, Morocco, North Macedonia, Palestine, Portugal, Slovenia, Spain, Tunisia and Türkiye.

MEDREG’s 29 regulatory members include:

• 9 European countries;
• 5 Balkan countries plus Türkiye;
• 9 Middle East and North Africa (MENA) countries.

In terms of regulatory scope:

• 6 members regulate electricity only, and 3 are dedicated solely to gas;
• 3 members regulate both gas and electricity;
• 9 members regulate all energy sectors (gas, electricity, and others), while 3 members cover energy alongside additional sectors such as waste, telecommunications, and consumer protection.

From an institutional perspective, MEDREG comprises 23 independent regulatory authorities and 6 ministries.