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More Light,
Less Heat.
Save up to 30% on energy costs with
research-backed louver technologies

glare-free
low-to-no maintenance
retrofit or new building

Demonstrated results around the world
Proven expertise with 6,500,000 sf
of completed
projects in
11 countries
save on your property operating expenses
85% less heat transmission than standard blinds, up to 50% less reliance on artificial lighting
cooler in summer,
warmer in winter
Passive system effective year round, custom-designed
for each individual project

proven success in flagship projects across 11 countries
Advancing the Daylighting Frontier
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6.5M
square feet of demonstrated projects around the world.
11
Countries with RETROSolar projects implemented.
35+
Years of experience implementing daylighting systems.
5%
Achieving the lowest G (SGHC) values across our product lines.
The future of daylighting technology:
mirror optic
louver systems.


productivity, performance
& well-being
RETROSolar delivers balanced, glare-free daylight deep into the floorplate so people can focus longer and feel better.
In a study by Paracelsus Medical University, classrooms with RETROLux A blinds showed up to 30% lower cortisol and more efficient melatonin breakdown versus standard external venetian blinds—biomarkers linked to lower stress and better sleep. That translates to sharper attention, fewer headaches, and measurably better days at work.
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Glare-free daylight on task planes
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Comfortable brightness across the whole floor
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More “prime” workstations, not just at the windows
pays for itself—
four ways
RETROSolar systems cut lighting hours, slash heat at the facade, and smooth peak loads—while making space more desirable. Every project is modeled with our proprietary software that accounts for climate, orientation, schedule, and region, and the optics can be fine-tuned after installation for maximum ROI.
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Lower lighting energy
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Lower cooling loads (better g-value/SHGC via retro-reflection)
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Lower peak demand
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Higher asset value (happier occupants, stronger leasing)


how the optics work
We design precision mirror optics to redirect useful daylight upward and deep into the room—while “sending back” excess solar energy. Compared to conventional blinds, the optics can reduce solar heat input by up to 80% and simultaneously boost diffuse, glare-free illumination—bringing offices closer to daylight autonomy.
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Significantly improved g-values through RETRO reflection
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More diffuse, natural light with no screen washout
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Software-tuned louvers for ongoing performance optimization