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Ella a vu la lumière / ©Peer Dalbruna


Daylight is not only considered as a renewable energy: it is also seen as a structuring element of the project. The specific treatment of direct and diffuse flows, and the integration with artificial light are addressed in close collaboration with the architects, in order to best serve the users requirements.


The DIAL+Lighting software, developed entirely by Estia, is a reference tool for major French engineering firms to simulate daylight factors values and daylighting autonomy.

Some emblematic projects

Etudes d'ombrage Projet Tour TAOUA, Lausanne, Arch. Pont 12
Etudes d'ambiances Maison de l'écriture, Salle d'exposition, Arch. Mangeat Wahlen
Etudes sur maquettes Rénovation CNIT Paris la Défense, Arch. Brulmann & Crochon
Charte lumineuse / conception de luminaires Métro M2 Lausanne
Calculs d'autonomie en lumière naturelle Swiss-Cortex, Fribourg, Arch. CCHE

  • Mairie de Nicosie, Chypre, arch. Irwin Kriotiki

  • Bastion Saint-Antoine. Genève, arch. Estar

  • Université de Lausanne, Rénovation bat. Anthropole.

  • Nestlé Research Center, Vers chez les Blancs, arch. Bronnimann & Gottreux

  • Immeuble de Bureau, Rue Saint Martin, Genève, arch. Archespaces

  • Immeuble de bureau Fusterie Rhône, Genève, arch. Guenin Atelier d'Architectures SA

  • ITA Roof Projekt, HIB Building, ETHZ, arch. Gramazio / Kohler

  • CEP, Nyon , arch. Aeby & Pernegger

  • ACPC, Fribourg, arch. Butikofer, de Oliveira & Vernay

  • UEFA, Nyon, arch. Bassi-Carella

  • UBS Pleyad, Saint-Denis, arch. Bleas & Leroy

  • Business Park Prilly, arch. CCHE

  • Usine Turbomeca, Pau, France, arch. Brunerie Irissou

  • Palais Rumine, SIPAL

  • Musée Abbaye Saint-Vaast Arras, arch. O. Chaslin

  • Musée Rebeyrolles, Limoges, arch. O. Chaslin

  • Musée Carnavalet, arch. MAW


Click on the images to access detailed information

We apologize for not being able to mention here all the projects we have had the privilege and the pleasure to work on.

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