WinCo Foods, a West Coast grocery store chain, utilizes Sunoptics Prismatic Skylights for their daylighting needs for all their store designs. 4' x 8' Signature Series domes are utilized with a white, reflective roofing membrane that increase ambient light levels, even on overcast days, to flood the retail space with 100% glare-free and flicker-free natural light. The result is an energy-efficient and high-performance retail space that has been proven in third party stories to increase sales an average of 40% over a non-daylighted space. Also, because the most efficient fluorescent lighting system produces twice the amount of heat for the same light levels, daylighting with Sunoptics Prismatic Skylights and daylighting controls allows retailers to reduce tonnage needs for HVAC. With Sunoptics, WinCo Food Stores come alive with an energy efficient and productive shopping experience.