Prism Glass Windows Making a Comeback
Steve Daley writes "Prism window glass like Luxfer was big back in the 19th century, but now it seems to be making a high-tech comeback in Japan, where several companies are commercializing similar technology that gets enough natural light into factories and offices to do away with electric lighting. It's easy on the pocket and the planet."
A Window!
There are a lot of advantages of natural light over fluorescent in terms of productivity and employee satisfaction. I don't know if you're talking $10,000 worth of advantage, but it is a factor.
Gee... I knew I loved this old house for some reason :) lots of glass windows and tall ceilings. No Luxfer prisms, but lots of stained glass and multiple large windows per room. Effectively we use almost no artificial light during daylight hours (except in the kitchen - tacked onto the house in 1910 or so). Similarly, we don't need air conditioning well into late June here in Illinois due to the way the house was built (and creative use of basement and attic doors).