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A dynamic glazing that electronically tints to control the daylight and heat in buildings

September 2021
Gallery SageGlass 1
Gallery SageGlass 1


SageGlass aims at providing an elegant and sustainable alternative to conventional buildings' facade solutions for architects and builders looking at solving solar control challenges without sacrificing aesthetics, energy-efficiency or comfort. SageGlass dynamically adapts its tint in response to the weather conditions and the building's needs, to manage the daylight and heat in a smart way. Spaces always benefit from daylight and a free access to views to outdoors, without suffering from glare nor overheating. This thus results in reducing the building's energy use and improving the occupants' comfort and well-being.

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Label Date September 22, 2021
Parent company Saint-Gobain
Collaborating with Schneider Electric
From Switzerland
Maturity stage Medium and large scale commercialization
Looking For Network, New clients, Visibility, Partners, Credibility

Implementation Stories

SageGlass by Vetrotech Saint-Gobain International AG
Implemented by Schneider Electric in Grenoble (France) in 2020

Schneider Electric opted for SageGlass electro- chromic glass for the facades of its canteen, “Le Bistro” in their new flagship office building in the Grenoble region: IntenCity. 450 m2 of glass were installed and connected to the building management system (BMS) so that dynamic glass tints or clears automatically depending on temperature and occupancy and adapts perfectly to the Smart Building ecosystem. By controlling heat and light with precision, the system enabled to reduce the energy and maintenance costs of the canteen while creating a pleasant environment for employees to dine in.


Employees are protected from heat and glare, thus affording them a sense of well-being.

SageGlass by Vetrotech Saint-Gobain International AG
Implemented by Greisch in Liège (Belgium) in 2022

In response to some employees’ growing discomfort in the buildings of Greisch, renovated in 2018, Greisch had set up a ventilation/air conditioning system which, due to frequent episodes of high heat, proved to be unsatisfactory. The totally glazed atrium (242 m²) of the Greisch buildings had to be equipped with occulting solutions in order to control the heat contributions, the disparities of temperatures between the various floors, as well as the glare on the computer screens. The GREISCH team chose the SageGlass Labeled Solution and its electrochromic glazing that automatically adapts its tint to the sun's path. Today, GREISCH is also reducing its energy bills by limiting its air conditioning needs and eliminating the maintenance costs associated with conventional shading devices such as blinds.


SageGlass by Vetrotech Saint-Gobain International AG
Implemented by Nestlé S.A. in Grenoble (France) in 2020

The world’s largest food company, Nestlé, has undergone a major renovation project for its headquarters in Vevey, Switzerland. The LightZone glazing Solution replaced the former solution combining glazing and interior blinds. In 2020, 4,400 square meters of dynamic glazing were installed to offer an optimal solar and thermal protection in the offices. On these facades, the modification of the glazing tint is done in an automated way via a central unit integrating various meteoro- logical parameters but also the time periods of occupation, the surrounding landscape and the function of the spaces.


The project's aims to reduce CO2 emissions by just over 2,000 tons a year


The environmental benefits

  • Blocks up to 96% of solar heat in cooling seasons, or just 60% in heating seasons, contributing to optimized energy efficiency and thermal comfort all year.
  • Lets 60% of daylight in the clear state and blocks up to 99% of daylight in the darkest state, providing optimized daylight levels without visual discomfort while keeping the views out
  • Reduces building's overall energy loads by an average of 20% and peak energy demand by up to 26%
  • All-in-one solar shading solution that lightens and simplifies the facade design and construction

The Financial benefits

  • Reduces building's energy-related operating costs by an average of 20%.
  • Less than 4 years payback time, thanks to reduced building's energy and maintenance costs, and improved occupants' comfort and well-being.

Activity Region

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  • Headquarters
  • Activity

Company Profile

Vetrotech Saint-Gobain International AG

Vetrotech offers a broad range of multifunctional fire resistant and high security glass solutions including impact-, bullet- and blast-resistant glazing.

View company profile Solution website
Headquarters 3175 Wünnewil-Flamatt, Suisse

Parent company


Worldwide leader in light and sustainable construction, Saint-Gobain designs, manufactures and distributes materials and services for the construction and industrial markets. Its integrated solutions for the renovation of public and private buildings, light construction and the decarbonization of construction and industry are developed through a continuous innovation process and provide sustainability and performance. The Group’s commitment is guided by its purpose, “MAKING THE WORLD A BETTER HOME”.

View company profile
Headquarters 92400 Courbevoie, France

Collaborating with

Schneider Electric

Schneider Electric is leading the Digital Transformation of Energy Management and Automation.

View company profile
Headquarters 92500 Rueil-Malmaison, France
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The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator Vetrotech Saint-Gobain International AG has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.