hôtel lou calen



As part of its BIPV solutions portfolio, Onyx Solar has supplied its amorphous silicon photovoltaic glass to the luxury eco-friendly resort Hôtel Lou Calen. It is located in Cotignac, in the French region of Provence-Alpes-Côte d'Azur.


frolunda culture house photovoltaic curtain wall onyx solar



  • superficieTotal Area - 104 M2
  • electricidad generadaElectricity generated in 35 years  - 128,750 kWh
  • puntos de luzTotal lighting points operating 4 hours per day in 35 years - 253 lighting points
  • emisiones CO2 evitadas CO2 emissions Avoided in 35 years - 8 Tons of CO2
  • barriles petroleo ahorradosBarrels of oil saved in 35 years - 76 barrels


Example of a feasibility study of amorphous silicon photovoltaic skylight in Cotignac:


  • superficie Payback time  < 8.7 years
  • electricidad generada Internal rate of return (IRR)  11.7 %




* Onyx Solar Energy S.L. makes no representations, warranties or guarantees, whether express or implied, that the content in the report is accurate, complete or up to date.



This photovoltaic skylight is made of red, blue, yellow, and green coloured photovoltaic glass, evoking a Mondrian-like appearance and providing captivating shadows in a very aesthetically pleasing.



photovoltaic skylight lou calen hotel 3



We have customized the manufacturing of PV glass to meet the high aesthetic standards required by the client.


Our innovative technology has been manufactured in different sizes (1,245x1,242 mm & 1,245x635 mm), degrees of transparency (low, medium and high transparency), and colors (red, blue, green, yellow) arranged in a grid pattern that evokes the work of the Dutch painter Piet Mondrian.



photovoltaic skylight lou calen hotel 4



All units have a glass configuration of 6+3+6 mm and a 16 mm argon chamber that offers significant benefits, including increased energy efficiency, reduced noise and UV transmission, and improved insulation. The argon gas acts as an insulator, reducing heat transfer and improving energy efficiency. 



The colored glasses not only add a bold visual element to the space, but they also diffuse natural light in a way that creates beautiful and interesting shadows on the surrounding walls and floor. The resulting effect is a dynamic interplay of light and shadow that changes throughout the day and adds an element of whimsy and playfulness to the space.



TM © 2023 - Hervé Fabre photography - All rights reserved.




Owner: Hôtel Lou Calen

Mechanical Installer: Ferronerie Cassien/Solar Structure

Electrical Installer: Ocsun

Photos: Hervé Fabré photography

Onyx Solar’s Local Representative: R2M France











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