| Institution | Short Name | Country | Type | Scientist-in-Charge |
|---|---|---|---|---|
| ALBERT-LUDWIGS-UNIVERSITAET FREIBURG | ALU-FR | Germany | Coordinator | Giuseppe Sansone (exp.)/ Andreas Buchleitner (theory) |
| LUNDS UNIVERSITET | LUND | Sweden | Beneficiary | Johan Mauritsson/ Anne L’Huillier |
| FUNDACIO INSTITUT DE CIENCIES FOTONIQUES | ICFO | Spain | Beneficiary | Maciej Lewenstein (theory)/ Jens Biegert (exp) |
| COMMISSARIAT A L ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES | CEA | France | Beneficiary | Pascal Salieres/ David Bresteau |
| UNIVERSIDAD AUTONOMA DE MADRID | UAM | Spain | Beneficiary | Fernando Martin/ Alicia Palacios |
| AMPLITUDE | AMPL | France | Beneficiary | Anna Golinelli/ Michele Natile |
| IDRYMA TECHNOLOGIAS KAI EREVNAS | FORTH | Greece | Beneficiary | Paraskevas Tzallas/ Dimitris Charalambidis |
| SPHERE ULTRAFAST PHOTONICS SA | SPH | Portugal | Beneficiary | Rosa Romero/ Helder Crespo |
| FORSCHUNGSVERBUND BERLIN EV | FVB-MBI | Germany | Beneficiary | Marc Vrakking (exp)/Mikhail Ivanov (theory) |
| ELETTRA – SINCROTRONE TRIESTE SCPA | FERMI | Italy | Beneficiary | Carlo Callegari/ Oksana Plekan |
| FONDAZIONE MUSEO NAZIONALE DELLA SCIENZA E DELLA TECNOLOGIA LEONARDO DA VINCI | MNST | Italy | Associated Partners | Sara Calcagnini |
| EXCITE YOUTH FOR ENGINEERING, SCIENCE AND TECHNOLOGY | EYEST | Belgium | Associated Partners | Tine De Pauw |
| EKSPLA UAB | EKSPLA | Lithuania | Associated Partners | Rokas Danilevičius/ Justas Varpucianskis |
| CLASS 5 PHOTONICS GMBH | CLASS5 | Germany | Associated Partners | Robert Riedel |
| DEUTSCHES ELEKTRONEN-SYNCHROTRON DESY | FLASH | Germany | Associated Partners | Markus Gühr |
| ELI-HU KUTATASI ES FEJLESZTESI NONPROFIT KOZHASZNU KORLATOLT FELELOSSEGU TARSASAG | ELI-ALPS | Hungary | Associated Partners | Katalin Varju |
| UNIVERSIDAD DE SALAMANCA | USAL | Spain | Associated Partners | Íñigo Sola/ Benjamin Alonso |
| FREIE UNIVERSITAET BERLIN | FUB | Germany | Associated Partners | Marc Vrakking |
| UNIVERSITY PARIS-SACLAY | UPSaclay | France | Associated Partners | Charles Bourassin-Bouchet/ Marc Hanna |
| HUMBOLDT-UNIVERSITAET ZU BERLIN | UBER | Germany | Associated Partners | Mikhail Ivanov |
| PANEPISTIMIO KRITIS | UC | Greece | Associated Partners | Paraskevas Tzallas |
| UNIVERSITATPOLITECNICA DE CATALUNYA | UPC | Spain | Associated Partners linked to a beneficiary (ICFO) | Joseph M. Font |
| UNIVERSITA DEGLI STUDI DI TRIESTE | UNITS | Italy | Associated Partners linked to a beneficiary (ICFO) | Claudio Masciovecchio |