History, technology, and custom design in a unique building
Grupo Cador has carried out the implementation of Zelestra's new offices (formerly Solarpack) in the historic center of Bilbao.
The project is located in a building designed in 1916 by Pedro Asúa, the former headquarters of the Coliseo Theater, whose original Italian facade has been respected and integrated as part of the new space.
With 1,600 m² of floor space, the offices stand out for their premium finishes and custom carpentry in areas such as the reception and dining room, which provide a unique identity.
The interior design, by Gaztelu Arquitectos, reflects the new brand of this multi-technology company specializing in renewable energies.

Project challenges
- Implementing modern offices in a protected historic building, respecting its architectural value.
- Integrating advanced technology in an environment with construction restrictions and limited hours.
- Adapting the IT infrastructure for a control room with 12 synchronized screens.
- Executing premium finishes with special focus on custom carpentry and acoustic comfort.



Implemented solutions
- Comprehensive construction coordination with respect for the original building.
- Implementation of advanced acoustic insulation throughout the space.
- Adaptation of the IT and audiovisual infrastructure to guarantee connectivity and centralized control.
- Custom carpentry in representative areas (reception, dining room).





Results
- 1,600 m² offices that combine the historical essence of the building with a modern, technological, and innovative image.
- Spaces aligned with Zelestra's new corporate identity, reflecting its evolution in the renewable energy sector.
- A work environment that enhances the team's collaboration and sense of belonging, while adding value to Bilbao's business ecosystem.


