NEW YORK (TheStreet) - Clean Edge and Nasdaq's three benchmark clean-tech stock indexes saw mild movement last week, as the Nasdaq Clean Edge Green Energy Index (CELS) was down 0.62 percent, the Nasdaq OMX Clean Edge Global Wind Energy Index (QWND) lower by 1.43 percent, and the NASDAQ OMX Clean Edge Smart Grid Infrastructure Index (QGRD) gained 1.14 percent from the previous week.The overall market was also calm. The S&P 500 lost 0.55 percent and Nasdaq was down 0.10 percent - while AMEX Oil was 0.56 percent higher from the previous week. CELS, down 0.62 percent for the week and 15.86 percent 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. Of the 51 total component securities, 18 experienced gains, 32 lost ground, and one remained unchanged. CELS' best performer for the week was demand management firm EnerNOC ( ENOC), gaining 11.90 percent. Rounding out the top five CELS performers were semiconductor maker Fairchild Semiconductor ( FCS), up 8.44 percent; power management device maker O2Micro International ( OIIM), higher by 6.97 percent; power management semiconductor manufacturer International Rectifier Corporation ( IRF), up 4.65 percent; and electric vehicle manufacturer Tesla Motors ( TSLA), 4.21 percent higher for the week. CELS' worst performer last week was Chinese solar cell and module maker Trina Solar ( TSL), declining 8.86 percent. Other worst performers included energy storage technology developer Ener1 ( HEV), losing 8.77 percent; Chinese solar product manufacturer Suntech Power ( STP), down 7.97 percent; biomaterial developer Metabolix ( MBLX), retreating 7.16 percent; and network infrastructure product maker Echelon Corporation ( ELON), 7.13 percent lower for the week. QWND, 1.43 percent lower last week and 27.66 percent 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 18 pure play components, four saw gains, 11 experienced losses, and threeended the week unchanged. QWND's best pure play performer for the week was wind energy project developer China Windpower Group (0182), up 2.70 percent. Other top pure play performers included German wind turbine maker REpower Systems ( RPW), gaining 1.81 percent; renewable energy project developer Gamesa Corporacion Tecnologica ( GAM), rising 1.44 percent; and energy delivery technology developer American Superconductor ( AMSC), up 0.33 percent for the week.
QWND's worst pure play performers were wind turbine maker Nordex ( NDX1), losing 6.43 percent; renewable energy project developer EDP Renovaveis ( EDPR), down 4.23 percent; wind energy project owner Japan Wind Development (2766), losing 4.22 percent; wind turbine gearbox developer Hansen Transmissions International ( HSN), declining 4.07 percent; and wind farm owner and operator Infigen Energy ( IFN), falling 3.85 percent from the previous week. QGRD, 1.14 percent higher from the previous week and 13.24 percent higher than a year ago, 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. Of 22 pure play components, 15 experienced positive movement while 7 saw losses on the week. QGRD's best pure play performer was EnerNOC, up 11.90 percent for the week. Rounding out the top five pure play performers were utility specialty contractor Quanta Services ( PWR), gaining 5.43 percent; communication equipment provider RuggedCom ( RCM), rising 2.71 percent; electrical equipment manufacturer AZZ Incorporated ( AZZ), 2.63 percent higher; and utility wire and cable provider General Cable ( BGC), higher by 2.19 percent. QGRD's worst performers included Echelon Corporation, losing 7.13 percent; demand management service provider Comverge ( COMV), down 4.38 percent; power conversion device maker Power-One ( PWER), down 3.26 percent; smart grid service provider PowerSecure International ( POWR), lower by 3.20 percent; and utility specialty service provider Pike Electric ( PIKE), falling 2.67 percent. This information is not intended to be used as a guide to investing, and the authors make no guarantees that any investments based on the information contained herein will benefit you in specific applications, owing to the risk that is involved in investing of almost any kind.