Diagram Daylight Penetration Illuminance Contribution Energy Savings Summer Peak Demand Comparative Normalized Costs Evaluation of Side Daylighting LightLouver vs. Photovoltaics Third... s product application guidelines, will help ensure proper illumination, visual comfort and long-term energy savings. Architectural and interior design products that meet... controls Improper design or selection of the electric lighting system controls can reduce the amount of daylight harvesting and thus the energy savings derived from dimming...