| Name | Type | Sector | Country | Joined On |
|---|---|---|---|---|
| Generadora y Comercializadora de Energia del Caribe S.A. E.S.P. | Company | Electricity | Colombia | 19-Aug-2011 |
| Empresa de Energia de Boyaca S.A. E.S.P. | Company | Electricity | Colombia | 25-Apr-2011 |
| Empresa de Energia del Quindio edeq S.A. E.S.P | Company | Electricity | Colombia | 01-Jun-2010 |
| CENTRAL HIDROELECTRICA DE CALDAS - CHEC | Company | Electricity | Colombia | 05-Jan-2009 |
| GENELEC DE COLOMBIA S.A.S. | Small or Medium-sized Enterprise | Electricity | Colombia | 11-Dec-2008 |
| GENSA Gestión Energética S.A. ESP. | Small or Medium-sized Enterprise | Electricity | Colombia | 14-Apr-2008 |
| Interconexion Electrica S.A. ISA ESP | Company | Electricity | Colombia | 12-Oct-2005 |