The U.S. Department of Energy (DOE) has released analysis findings for markets where light-emitting diodes (LEDs) compete with traditional lighting sources (e.g., incandescent and fluorescent). The January 2011 report provides estimates of current energy savings, plus potential savings if these markets switched to LEDs overnight.

DOE analyzed the following markets:

  1. Four general-illumination applications
    1. PAR, BR, and R replacement lamps;
    2. MR16 replacement lamps;
    3. 2-foot by 2-foot troffer fixtures; and
    4. general service A-type replacement lamps
    5. Four outdoor applications
      1. roadway,
      2. parking,
      3. area and flood, and
      4. residential
      5. Four applications for consumer electronic displays
        1. televisions,
        2. laptops,
        3. monitors, and
        4. mobile handsets.

LEDs in these markets saved approximately 3.9 terawatt-hours in 2010, equivalent to the electricity needed to power more than a quarter-million average U.S. households.

If these markets switched to LEDs overnight, the energy savings would be the equivalent of taking 21 million residential households off the grid based on 2010 performance level.

If LED replacements within each market improve according to DOE’s predictions for 2020, the energy savings would be equivalent to taking nearly 32 million households off the grid.

To download a PDF of the report, go to

Ht: Jim Brodrick,