Each of Clean Edge's three benchmark indexes rose last week, with a majority of component stocks in positive territory for the five-day period.

The NASDAQ Clean Edge Green Energy Index ( CELS)was up 2.52 percent, the NASDAQ OMX Clean Edge Global Wind Energy Index ( QWND) grew 1.89 percent, and the NASDAQ OMX Clean Edge Smart Grid Infrastructure Index ( QGRD) (QGRD) rose 2.63 percent.

The overall market saw similar movement with the S&P 500 gaining 3.20 percent, NASDAQ 3.29 percent higher, and AMEX Oil up 2.86 percent for the week.

CELS -- up 2.52 percent for the week -- 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 the advanced materials sector, three of the five component companies were in positive territory. Energy intelligence, the most populated sector of the index, saw 14 of its 20 components grow. Energy storage and conversion had five components in the red, four gaining, and one company unchanged. For renewable electricity and fuels, eight components were up, with the remaining seven losing ground.

CELS' best performer for the week was solar PV module manufacturer Trina Solar ( TSL), gaining 17.46 percent. Rounding out the top five CELS performers were solar-cell and module-maker Canadian Solar ( CSIQ), up 15.09 percent; energy demand management firm EnerNOC ( ENOC) -- which on Thursday reported its first ever profitable quarter -- rising 12.22 percent; rechargeable lithium-ion battery producer Ener1 ( HEV), gaining 11.22 percent; and energy storage system maker Ultralife Batteries ( ULBI), up 11.20 percent.

CELS' worst performer last week was solar wafer manufacturer LDK Solar ( LDK), declining 15.34 percent.

On Monday, Q-Cells announced it is terminating a long-term supply agreement with the company. Other worst performers included advanced materials producer Rubicon Technology ( RBCN), falling 9.66 percent; energy storage and power delivery system maker Maxwell Technologies ( MXWL), losing 8.09 percent; lithium battery maker China BAK Battery ( CBAK), down 5.17 percent; and developer of advanced energy delivery technology American Superconductor ( AMSC), losing 4.89 percent.

QWND -- up 1.89 last week -- includes companies that are primarily manufacturers, developers, distributors, installers, and users of energy derived from wind sources. QWND's 24 pure-play components were evenly split, with 12 seeing gains and 12 losing ground.

QWND's best performer for the week was wind turbine gearbox maker Hansen Transmissions Intertnational ( HSN), gaining 9.38 percent.

Other top performers included composite materials producer Gurit Holding ( GUR), climbing 5.81 percent; turbine manufacturer Vestas Wind Systems ( VWS), up 5.23 percent; Australia-based wind farm owner Infigen Energy ( IFN), growing 5.21%; and project developer Iberdrola Renovables ( IBR), rising 4.95%.

QWND's worst performers were wind farm operator Terna Energy ( TENERGY), down 4.92 percent; American Superconductor ( AMSC), losing 4.89 percent; wind turbine manufacturer Clipper Windpower ( CWP), falling 3.17 percent; wind farm operator Japan Wind Development ( 2766), down 3.06 percent; and carbon fiber maker Zoltek Companies ( ZOLT), declining 2.69 percent.

QGRD -- up 2.63 percent last 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, 10 pure play QGRD components saw gains and 7 lost ground.

QGRD's best performer was EnerNOC, gaining 12.22 percent. Rounding out the top five performers were power conversion device maker Power-One ( PWER), rising 12 percent; energy demand management company Comverge ( COMV), up 9.11 percent; transformer manufacturer Jinpan International ( JST), climbing 8.17 percent; and developer of energy data systems ESCO Technologies ( ESE), growing 5.91 percent.

QGRD's worst performers included American Superconductor, losing 4.89 percent; network infrastructure developer Echelon ( ELON), down 4.76 percent; communications company RuggedCom ( RCM), retreating 4 percent; electrical product manufacturer NGK Insulators ( 53330), falling 2.64 percent; and grid service contractor Pike Electric ( PIKE), down 2.07 percent.
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 CleanEdge.com.