Lighting Science Group Launches Ultra-Efficient European Line of DEFINITY LED Bulbs

SATELLITE BEACH, Florida, April 14, 2011 - Leading the ultra-efficient lighting revolution - Lighting Science Group
(OTCBB: LSCG) today launched a European line of its DEFINITY LED bulbs that
have a higher lumen (light) output than many of its competing products at a
dramatically lower retail price. Europeans can now start lowering energy cost
without sacrificing light quality by installing Lighting Science Group's
DEFINITY line of LED light bulbs. The line includes MR16, PAR38, R63, R95,
G80, and A60 bulb types that are approximately 80% more efficient than
traditional incandescent bulbs, are dimmable and will last nearly 25,000
hours (25 times as long as a typical incandescent bulb).

(Photo: photos.prnewswire.com/prnh/20110414/NY83064 )

"Our European DEFINITY line of LED bulbs sets a new standard for lighting
performance at an affordable price," said Rich Weinberg, chairman and chief
executive officer of Lighting Science Group. "These bulbs offer the best
lumens per dollar and can save users hundreds of dollars in maintenance,
replacement and energy costs. Furthermore, unlike CFLs, the DEFINITY LED
bulbs contain no mercury, are completely recyclable, are 'instant on,' and
offer outstanding light quality."

To ensure performance and reliability, the DEFINITY LED line was tested
under the rigorous LM-79 process by an independent laboratory approved by the
U.S. Department of Energy's CALiPER program. These testing results show that
the DEFINITY LED bulbs outperform many competing products on the market.
Moreover, saving green by buying green has been made easier, since the
DEFINITY LED bulbs have a payback of one to two years.

"With the phase-out of incandescent light bulbs, Europeans can now
purchase long-lasting, environmentally responsible and sustainable
replacements that make economic sense-without sacrificing lighting quality,"
added Weinberg.

The DEFINITY line of LED light bulbs is being offered through lighting
distributors and directly by Lighting Science Group. To find your nearest
sales location, go to: www.lsgc.com/corporate/buymap.

About Lighting Science Group

Lighting Science Group Corporation (OTCBB: LSCG) designs, develops,
manufactures and markets LED lighting solutions that are environmentally
friendlier and more energy efficient than traditional lighting products.
Lighting Science Group 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. Lighting Science Group's Advanced Projects Group
business unit designs, develops and manufactures custom LED lighting
solutions for architectural and artistic projects. Lighting Science Group is
headquartered in Satellite Beach, Florida; the Company's European operations
are based in Goes, The Netherlands; and the Company has a sales office in
Sydney, Australia. Lighting Science Group employs approximately 600 workers
building lighting products from domestic and imported parts. Lighting Science
Group is a Pegasus Capital Advisors portfolio company. More information about
Lighting Science Group is available at www.lsgc.com.

Forward Looking Statement. 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. These
statements include, but are not limited to, statements concerning the
performance of LSG and its products and/or use terminology such as
"anticipate," "assume," "believe," "estimate," "expect," "goal," "intend,"
"plan," "project," "seek," "target" and variations of such words and similar
expressions. 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 these
statements. In evaluating these statements, you should carefully review the
risk factors detailed under "Risk Factors" in our most recently filed
Registration Statement amendment on Form S1 with the Securities and
Exchange Commission that may cause our actual results to differ materially
from these forward-looking statements.

Note to Editors:

A picture/s accompanying this release is available through the PA
Photowire. It can be downloaded from www.pa-mediapoint.press.net or
viewed at www.mediapoint.press.net or www.prnewswire.co.uk.

Andy Beck of MWW Group, +1-202-585-2288, abeck at mww.com