Three lighting reports published earlier this by the U.S. Department of Energy (DOE) offer a comprehensive picture of the current state of LED lighting and the lighting market in general.
The Lighting Facts report is available online at www.lightingfacts.com, and the other two reports are available at www.ssl.energy.gov/tech_reports.html.
- Energy Savings Potential of Solid-State Lighting in General Illumination Applications forecasts the energy savings potential of LED white-light sources compared with incandescent, halogen, fluorescent and high-intensity discharge (HID) sources. The report states that LED lighting in general illumination applications has the potential to cut U.S. lighting energy consumption by 46 percent, and forecasts that the use of LEDs in such applications will mushroom over the next two decades, accounting for just over one-third all lumen-hour sales by 2020 and nearly three-fourths by 2030.
- The latest LED Lighting Facts Product Snapshot covers LED luminaires. Among the performance trends it shows is that the efficacy of LED commercial outdoor luminaires–whose high baseline wattages and long hours of daily use can make even small improvements in that area pay off–is increasing. When it comes to their indoor counterparts, however, the efficacy is improving at varying rates–with troffers, for example, improving faster than downlights and undercabinet lights.
- The 2010 U.S. Lighting Market Characterization explores the lighting market in general. An update to a similar report on the market in 2001, it looks at how many light sources of each type of technology were installed in the U.S. in 2010, as well as where they were installed, how much energy they consumed and how the nation’s lighting market changed over the decade. Some key findings from this report:
- T8 fluorescents in the commercial/industrial sectors have increased from 580 million in 2001 to more than 1 billion in 2010. T5s have surged from 6 million to 107 million, but T12s have decreased from just over 1 billion to 610 million.
- The number of installed CFL, HID, high-pressure sodium, and, of course, LED lamps have all increased between 2001 and 2010.
- Between 2001 and 2010, the average system efficacy of installed lighting increased from 45 to 58 lumens per watt.