Plenary session with stage, LED screens and audience

Astera Énergie

Brand experience

Convention Horizon

1,200 employees, two days, a plenary designed like a show.

Client
Astera Énergie
Venue
Marseille
Guests
1,200 guests
Timeline
16 weeks · build-up 3 days
Year
2025
01

The brief

Astera Énergie was bringing all its teams together for the first time after a merger. The challenge: to get 1,200 employees on board with a new corporate project in two days, through a plenary session, workshops and an evening event.

Gala hall lit in purple
02

The idea

We built the convention as a story in three acts: an immersive plenary on a 32-metre panoramic screen, staged “field” workshops, then a gala evening where the new identity is revealed in light.

Speaker on stage in front of an auditorium
Long, elegant dinner table
03

Production

Panoramic LED screen, three-level stage, sets for twelve workshop rooms, technical direction for sound, lighting and video, filming and streaming for 400 remote employees. Coordination of fourteen suppliers.

Timeline · 16 weeks

  1. W-16Brief & venue search
  2. W-13Script & creative concept
  3. W-10Space design & technical direction
  4. W-8Set & content production
  5. W-2Speaker coaching
  6. D-3Build-up & rehearsals
  7. DPlenary, workshops & gala
  8. D+1Overnight breakdown
04

Installation

Three days of build-up, rehearsals with the speakers, show control throughout the event and overnight breakdown.

1,200employees brought together
32 mpanoramic LED screen
72participant NPS
14suppliers coordinated
They turned a corporate moment into a shared memory. Six months on, the teams still talk about it.
Sophie L., HR Director, Astera Énergie

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Team on the project

Project management & show controlArt directorTechnical directionSet workshopVideo & filming studioHospitality team
Minimalist black and white interior

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