The US Department of Energy (DOE) has released an update of its report that forecasts the energy-savings potential of solid-state lighting (SSL) compared with conventional white-light sources. The 2012 update entitled “Energy Savings Potential of Solid-State Lighting in General Illumination Application,” compares the annual lighting energy consumption in the US with and without market penetration of LED lighting beyond current levels.
According to the Energy Information Administration (EIA), the US consumed 694 TWh of site electricity in 2010 on lighting – approximately 18% of all electricity used. The model demonstrates the total energy consumption for lighting could be reduced by 19% by 2020 and by 46% by 2030 relative to a scenario with no additional LED lamps or luminaires beyond what is installed today. By 2030, the annual energy savings from market penetration of LEDs will be approximately 297 TWh, enough electricity to power 24 million homes. At current energy prices, that equates to $30 billion in savings in the year 2030. Assuming the same mix of power stations, these savings, according to the report, would reduce greenhouse gas emissions by 210 million metric tons of carbon in 2030.
A PDF of the DOE’s report can be downloaded at www.ssl.energy.gov/tech_reports.html.