The Environment

Reduced Carbon Footprint

In addition to substantial operating cost savings that high-efficiency solid-state lighting provides, the environmental benefits of reduced carbon emissions are also significant. Results of an analysis done by the US Department of Energy plotted here demonstrates what is possible by the year 2030:

  • 46% less power consumption in lighting
  • 300 terawatt-hrs reduced power consumption per year, or 2700 terawatt-hrs
    total integrated reduction
  • $30B in energy savings per year, or $250B in total integrated savings
  • 210 million metric tons reduced carbon emission per year, or 1800 million
    metric tons total integrated reduction
Environmental Benefits
US DOE, Energy Savings Potential of Solid State Lighting in General Illumination Applications, January, 2012.


No Reliance on Critical Materials

Additional benefits will be realized due to the elimination of rare-earth phosphors as quantum dot materials become reality. This is because certain key elements such as cerium, yttrium, and europium are used today in phosphors, along with other rare-earths as shown in the charts below. These are only available in scant quantities in a few places on the globe, mostly outside North America. Reduction or elimination of the need for these rare-earth elements in solid-state lighting will ease the dependence on mining and processing operations in politically sensitive areas of the world.

US DOE, Critical Materials Strategy Summary, 2011
US DOE, Critical Materials Strategy Summary, 2011.