MEDREG hosts a growing number of members, formed by the energy regulatory authorities of 23 Mediterranean countries and 1 Gulf Emirate: Albania, Algeria, Bosnia and Herzegovina, Croatia, Cyprus, Dubai, Egypt, France, Greece, Israel, Italy, Jordan, Lebanon, Libya, Malta, Montenegro, Morocco, North Macedonia, Palestine, Portugal, Slovenia, Spain, Tunisia and Türkiye.

MEDREG’s 30 regulatory members include:

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

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 4 members cover energy alongside additional sectors such as water, telecommunications, and consumer protection.

From an institutional perspective, MEDREG comprises 24 independent regulatory authorities and 6 ministries.