| Name | Type | Country |
|---|---|---|
| Elektro Ljubljana | Enterprise | Slovenia |
| Elhuyar | Enterprise | Spain |
| Emerging Advanced Technologies | Enterprise | Spain |
| EMPRESA METROPOLITANA DE ABASTECIMIENTO Y SANEAMIENTO DE AGUAS DE SEVILLA S.A | Enterprise | España |
| ENERGA OPERATOR SA | Enterprise | Poland |
| ENERGIE MARKT ANALYSE | Enterprise | Austria |
| Engineering Ingeneria Informatica SPA | Enterprise | |
| E.ON Energilösningar Aktiebolag | Enterprise | Austria |
| E-PYME | Enterprise | Spain |
| ERABI Tecnología Audiovisual | Enterprise | Spain |