| Name | Type | Country |
|---|---|---|
| 4Ward Energy Research GmbH | Research group | Austria |
| Abama Technologies | Enterprise | Spain |
| Abotic | Enterprise | Spain |
| Acciona | Enterprise | Spain |
| AECOC | Enterprise | Spain |
| Agotek | Enterprise | Spain |
| Alimerka | Enterprise | Spain |
| Allia (The social profit society) | Enterprise | United Kingdom |
| Amis D.O.O | Enterprise | Poland |
| Andago Ingeniería | Enterprise | Spain |