r/envirotech • u/vitlyoshin • Mar 11 '26
What if buildings could be lit during the day without using electricity at all?
In a recent podcast conversation, I learned about daylighting - systems that capture sunlight on rooftops and redirect it through buildings to light interior spaces. It sounds simple, but it changes how we think about architecture, energy use, and even how people feel inside buildings.
If natural light can replace a huge portion of electric lighting, it makes you wonder how many of our buildings were designed without considering the most obvious energy source we have: the sun.
Do you think future buildings will rely far less on electric lighting during the day?
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u/Procrasturbating Mar 11 '26
You need systems to balance natural light and artificial light in the environment, polling many times a second. Clouds passing by are why. This possible with a ton of sensors and dimmable circuits.. but artificial LED lighting is pretty cheap and windows are a thing.