COMV JASO VECO ESE UQM NEW YORK ( TheStreet) -- Clean Edge and Nasdaq's three benchmark clean-tech stock indices experienced large losses last week with the Nasdaq Clean Edge Green Energy Index (CELS) down 10.92%, the Nasdaq OMX Clean Edge Global Wind Energy Index (QWND) losing 15.16%, and the Nasdaq OMX Clean Edge Smart Grid Infrastructure Index (QGRD) 9.08% lower from the previous week.

The overall market also saw significant negative movement last week - the S&P 500 lost 6.39%, Nasdaq contracted 7.95%, and AMEX Oil was 8.67% lower.

CELS - down 10.92% for the week but still 8.83% higher than a year ago -- tracks U.S.-listed clean-energy companies and is divided into four categories: advanced materials; energy intelligence; energy storage and conversion; and renewable electricity generation and renewable fuels. In an indication of the week's dismal performance, every single one of the 53 total component securities lost ground from the previous week's close.

CELS' best performer for the week was energy management service provider Comverge ( COMV), losing 2.20%. Rounding out the top five CELS performers were solar cell manufacturer JA Solar ( JASO), down 2.62%; solar and LED equipment provider Veeco Instruments ( VECO), lower by 2.75%; utility network provider ESCO Technologies ( ESE), falling 2.92%; and electric motor developer UQM Technologies ( UQM), down 3.89%.

CELS' worst performer last week was Chinese solar product manufacurer Trina Solar ( TSL), declining 22.96%. Other worst performers included energy storage technology developer A123 Systems ( AONE), falling 22.65%; solar cell and module maker Suntech Power ( STP), losing 22.64%; solar module manufacturer Yingli Green Energy ( YGE), down 20.74%; and multicrystalline solar wafer maker LDK Solar ( LDK), losing 20.57%.

QWND -- down 15.16% last week and 17.82% lower in the last 12 months -- includes companies that are primarily manufacturers, developers, distributors, installers, and users of energy derived from wind sources. Of QWND's 21 pure play components, all ended the week in negative territory.

QWND's best pure play performer for the week was German wind turbine manufacturer REpower Systems (RPW), losing 1.02%. Other top pure play performers included wind farm owner and operator Terna Energy (TENERGY), down 3.04%; wind power producer China Longyuan Power Group (0916), falling 3.27%; wind turbine manufacturer Clipper Windpower (CWP), contracting 5.65%; and wind power equipment and service provider Japan Wind Development Company (2766), down 5.78% for the week.

QWND's worst pure play performers were wind energy product and service provider Broadwind Energy ( BWEN), declining 19.65%; gearbox and drive train maker Hansen Transmissions International ( HSN), down 16.67%; wind turbine manufacturer Vestas Wind Systems ( VWS), losing 15.00%; energy delivery technology developer American Superconductor ( AMSC), declining 14.15%; and wind farm developer Greentech Energy Systems ( GES), lower by 13.79%.

QGRD -- down 9.08% from the previous week -- is composed of companies that are primarily involved in the electric grid; electric meters, devices, and networks; energy storage and management; and enabling software used by the smart grid and electric infrastructure sector. Last week, two of the 21 pure play QGRD components saw gains while the remaining 19 lost ground.

QGRD's best pure play performer was renewable energy inverter maker SMA Solar Technology (S92), gaining 4.86%. Rounding out the top five pure play performers were wire and cable provider General Cable ( BGC), up 1.89%; Comverge ( COMV), down 2.20%; electric utility contractor Quanta Services ( PWR), 2.29% lower; and communication equipment provider RuggedCom ( RCM), losing 2.91%.

QGRD's worst performers included energy management service provider PowerSecure International ( POWR), losing 21.94%; transformer manufacturer Jinpan International ( JST), down 14.87%; American Superconductor ( AMSC), retreating 14.15%; renewable energy project integrator SATC, down 13.88%; and network infrastructure product maker Echelon Corporation ( ELON), lower by 12.79%.

Clean Edge, Inc., founded in 2000, is the world's first research and publishing firm devoted to the clean-tech sector. The company, via its publications, events, and online services, helps companies, investors, and governments understand and profit from clean technologies. Clean Edge, with offices in the San Francisco Bay Area and Portland Oregon, offers insight and intelligence on emerging clean-tech trends, opportunities, and challenges. The company publishes a range of reports including the annual Clean Energy Trends and Clean Tech Job Trends report series; hosts the annual Clean-Tech Investor Summit (along with IBF); maintains a number of benchmark clean-tech stock indices with NASDAQ OMX including CELS, QGRD, and QWND; and produces Clean Edge Jobs, a leading online jobs board for clean-tech job seekers, employers, and recruiters. To keep abreast of the latest clean-tech news; access industry reports; learn more about our services; or sign up for our free e-newsletters; visit