| Name | Type | Sector | Country | Joined On |
|---|---|---|---|---|
| AdP - Aguas de Portugal, SGPS (Holding Group AdP) | Small or Medium-sized Enterprise | Gas, Water & Multiutilities | Portugal | 2010-08-05 |
| EPAL - Empresa Portugesa das Aguas Livres, S.A. | Company | Gas, Water & Multiutilities | Portugal | 2008-04-24 |
| Redes Energeticas Nacionais, SGPS, SA | Company | Gas, Water & Multiutilities | Portugal | 2005-01-31 |