Advantages of LED Lighting

Part 1 of Advantages of LED Lighting. Light-emitting diodes (LEDs) are often touted for their energy efficiency and long life. Although these are important considerations, selecting a light source should involve many other factors. Let’s explores some of the unique attributes of LEDs, which may make them the best choice for a many applications. Financial […]


LED Lighting Explained: Questions and Answers

LED technology continues to develop rapidly as a general light source. As more LED lighting products are introduced on the market, what do retailers, energy efficiency advocates, and consumers need to know to make informed buying decisions? Are LEDs ready for general consumer use? The number of white-light LED products available on the market continues […]


When Are Photovoltaic Systems Appropriate?

People select PV systems for a variety of reasons. Some common reasons for selecting a PV system include: Cost—When the cost is high for extending the utility power line or using another electricity-generating system in a remote location, a PV system is often the most cost-effective source of electricity. Reliability—PV modules have no moving parts […]


Color of Light and Color Rendering

Part 5 of Energy-Efficient Lighting. Cool light is preferred for visual tasks because it produces higher contrast than warm light. Contrast is the brightness difference between different parts of the visual field, which is the area of space you can see at a given instant without moving your eyes. Warm light is preferred for living […]


Types of Lighting

Part 3 of Energy-Efficient Lighting. There are four basic types of lighting: incandescent, fluorescent, high-intensity discharge,and low-pressure sodium. Incandescent lighting is the most common type of lighting used in residences. Fluorescent lighting is used primarily in commercial indoor lighting systems, while high-intensity discharge lighting is used only for outdoor lighting applications. Low-pressure sodium lighting is used where […]