This is one of those everything-old-is-new-again stories. Major retailers like Whole Foods and Walgreens are
discovering they can save money by retrofitting their daylight fixtures. What’s that mean, exactly? Replacing windows and skylights with new ones that let more light into a building. More sunlight means less need for electric lighting. And lower costs. Seems obvious, but windows weren’t always so efficient at preventing heat loss as they are today. When you multiply all the windows in all the big commerical buildings across the county, the savings add up to millions of dollars. Making existing buildings more comfortable and cost effective to run is an extremely green building strategy.