On the national level
| Company | Registered Address | Agreement signature |
|---|---|---|
| Media Markt Saturn, SAU | Mas Blau Business Park, C/ Garrotxa 2-4, bldg. Ocean II, 2 - El Prat de Llobregat - Barcelona | 19/05/2008 |
| Gas Natural Sdg, SA | Av. Portal de l'Angel, 20-22 - Barcelona | 23/01/2009 |
| Almirall, SA | Ronda General Miter, 151 - 08022 - Barcelona | 26/11/2009 |
| Construction and Rehabilitation Activities Grupo Goialde SL | Polígono Iruregaña, 71 5 pl. Aizoain - Navarra | 02/11/2016 |
| Suez Spain, SL | C/ Santa Leonor, nº 39 28037 - Madrid | 13/01/2021 |