Consider a three-story office building 50 m × 30 m located in Denver, Colorado, with a window-to-wall ratio (WWR) of 0.25 with low-E glazing, which has a visible transmittance of 0.41 . The building has a lighting density of 10 W/m². Determine the energy and cost savings in implementing a dimming daylighting control system through the perimeter zones (5 m wide) of the building. Assume that without daylighting controls, the lighting system is operated 8 hours/day, 5 days/week, 50 weeks/year. The cost of electricity is 0.10 /kWh. Assume the typical wall height is 3 m per floor.