Lighting Science unveils 9W LED A19 bulb to replace 60W incandescents

Date Announced: 13 May 2010 The lighting revolution is here—Lighting Science Group will unveil today at LightFair 2010 a DEFINITY line 9 watt LED A19 bulb that will retail in the low $30 range and is a direct replacement for America’s most commonly used 60 watt incandescent bulb. Stunning the competition, Lighting Science Group’s breakthrough 770 lumen DEFINITY LED bulb surpasses the U.S. Department of Energy’s benchmark testing of a 60 watt equivalency (739 lumens), is 80% more efficient than a 60 watt incandescent bulb, and will last close to 23 years.* By way of comparison, Lighting Science Group’s new DEFINITY LED bulb, which will be built in the USA, will retail for about half the price, is more efficient, and will last twice as long as Philips’ recently announced 60-watt equivalent EnduraLED A19 bulb. Today’s announcement follows Lighting Science Group’s successful launch of its high quality, yet affordable, line of retrofit LED bulbs with a suggested retail price starting below $20.“One might ask how can we continue to produce such innovative American technology breakthroughs like the 9 watt DEFINITY LED bulb at such a low price? By revolutionizing the science of light, we are able to get more lumens out of our LED chips than any manufacturer on the market—both foreign and domestic,” said Zach Gibler, Chief Executive Officer of Lighting Science Group. “While other companies are struggling to develop performance LED lighting products we are bringing to market state-of-the-art lighting solutions that Americans can afford.” The new DEFINITY LED bulb in the familiar A19 shape is dimmable and a direct replacement for the most common incandescent bulb in use in this country—over 425 million 60 watt incandescent bulbs are sold in the U.S. every year, making up some 50% of the bulb sales market. Furthermore, unlike compact fluorescent lamps (CFLs), the DEFINITY LED bulb contains no mercury, is completely recyclable, and offers outstanding light quality. In most home applications, Americans are expected to save $255 in energy cost over the life of the product and the bulb will pay for itself in less than two years from energy savings.**“Americans will now have the freedom to switch to an affordable, environmentally friendly and energy efficient lighting solution at a reasonable price without sacrificing light quality,” said Gibler.To ensure performance and reliability, the new DEFINITY 9 watt LED retrofit bulb will be tested by an independent laboratory approved by the U.S. Department of Energy’s CALiPER program. The DEFINITY LED retrofit bulbs will be available through lighting distributors and directly from Lighting Science Group in the third quarter of this year. To see Lighting Science Group’s new DEFINITY 9 watt A19 LED bulb visit booth # 2335 at LightFair International 2010, May 12-14 in Las Vegas, Nevada.About Lighting Science Lighting Science Group Corporation (LSCG.PK) designs, develops, manufactures and markets LED lighting solutions that are environmentally friendlier and more energy efficient than traditional lighting products. LSG offers retrofit LED lamps in form factors that match the form factor of traditional lamps or bulbs and LED luminaires for a range of applications including public and private infrastructure for both indoor and outdoor applications. LSG’s Custom Solutions business unit designs, develops and manufactures custom LED lighting solutions for architectural and artistic projects. LSG is headquartered in Satellite Beach, Florida; LSG’s Custom Solutions business unit is based in Rancho Cordova, California; LSG’s European operations are based in Goes, The Netherlands; and, LSG has sales offices in Tokyo, Japan, Buckinghamshire, England and Sydney, Australia. LSG has over 200 workers in its Satellite Beach, Florida manufacturing facility building LED lighting products from domestic and imported parts. LSG is a Pegasus Capital Advisors portfolio company. More information about LSG is available at www.lsgc.com.Be sure to visit Lighting Science Group at LightFair International 2010—Booth # 2335 Forward Looking Statements Certain statements in this press release may constitute “forward-looking statements” made under the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995. The statements include, but are not limited to statements regarding the performance of LSG and the performance of LSG’s products using terminology such as “development,” “campaign,””revolutionary,” “well positioned,” “leading,” “breakthrough,” “advance,” “success,” “will,” “should,” “expected,” “best in class,” “unparalleled,” “would,” “could,” “expect,” “intend,” “plan,” “anticipate,” “believe,” “potential,” “opportunity,” “greater,” “preparing,” “excellent” or “extensive.” Such statements reflect the current view of LSG with respect to future events and are subject to certain risks, uncertainties and assumptions. Known and unknown risks, uncertainties and other factors could cause actual results to differ materially from those contemplated by the statements. In evaluating these statements, you should specifically consider various factors that may cause our actual results to differ materially from any forward-looking statements. Readers should carefully review the risk factors detailed under “Risk Factors” in our Form 10-K’s, Form 10-Q’s and other Securities and Exchange Commission filings. # # #*U.S. Department of Energy “LED Replacements for Incandescent Omnidirectional Lamps”, PNNL-18828, October 2009: http://apps1.eere.energy.gov/buildings/publications/pdfs/ssl/led_replacements.pdf*Based on 50,000 hours of usage. **Based on a usage of 6 hours/day, 7 days/ week, 365 days/year at an average utility rate of $0.10/KwH.

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Andy Beck MWW Group 202-288-6862 [email protected]

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