News

6 January 2009

 

Cree’s LR24 recessed LED luminaires being installed in Pentagon

LED chip, lamp and lighting fixture maker Cree Inc of Durham, NC, USA says that more than 4200 LR24 recessed LED luminaires are planned for installation in Wedge 5 of the US Pentagon in Washington DC as part of a major renovation that is currently underway.

In a ceremony at the Pentagon, John J. Kubricky, deputy under secretary of defense for Advanced Systems and Concepts, and Albert C. Ellet, acting director of the Washington Headquarters Service responsible for overseeing the renovation, signed an intra-departmental memorandum of agreement kicking-off the initiative to install LED lighting in the Pentagon.

The Cree LR24 luminaires have undergone extensive government testing and business-case analysis, including a preliminary Pentagon installation to meter the fixtures and compare the results to the alternative fluorescent technology. This independent analysis demonstrated a 22%reduction in energy usage and improved light quality, says Cree.

The business-case analysis yielded a payback of less than four years. The payback analysis considered energy savings, lifetime maintenance savings, savings from reduced load on the HVAC system, and elimination of hazardous waste disposal fees for mercury-laden fluorescent bulbs. Extensive modeling was also performed to determine optimal lighting design - analyzing the light distribution and spacing to ensure superior lighting and energy efficiency. The Wedge 5 installation is estimated to save 140 tons of CO2 emissions per year.

“The US federal government is taking a leadership role in energy efficiency for federal buildings both through existing mandates, as well as President-elect Obama’s American Recovery and Reinvestment Plan, which calls for the renovation of public buildings to make them more energy efficient,” says Cree’s chairman & CEO Chuck Swoboda. “Installations of highly efficient, low-maintenance LED lighting, like these in the Pentagon and in the US Federal Reserve, demonstrate that the future of energy-efficient lighting is here today.”

The LR24 units being used for the Pentagon renovation are being purchased from Cree by the Department of Defense’s (DoD) Title III program as a part of its ongoing development program with Cree, and provided to the Washington Headquarters Services (WHS), which oversees the Pentagon renovation program.

“The Title III program has long supported the development and deployment of silicon carbide (SiC) substrates and devices for use in high-power RF and power-switching applications for DoD systems,” says John Palmour, Cree co-founder & chief technology officer for advanced devices. “The program realized the importance of ensuring a strong domestic supply of SiC substrates and related devices, and the potential growth of solid-state lighting in the US. This Pentagon lighting project is a perfect example of stimulating America's leadership in high-technology manufacturing, yielding unique commercial and defense products while saving energy,” he adds. “Title III funding was also used to develop the technology in Cree's lighting-class XLamp XR-E LED platform - the light source in the LR24 recessed LED luminaire.”

See related item:

Cree announces volume availability of LR24 recessed LED luminaire

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