NEW YORK ( TheStreet) - Clean Edge and Nasdaq's three benchmark clean-tech stock indexes ended the year with a week of mild and mixed movement.

For the week, the Nasdaq Clean Edge Green Energy Index ( CEL) was down 0.80 percent, the Nasdaq OMX Clean Edge Global Wind Energy Index ( QWND) 1.99 percent higher, and the Nasdaq OMX Clean Edge Smart Grid Infrastructure Index ( QGRD) gained a slight 0.01 percent from the previous week.

The overall market was also relatively calm: the S&P 500 gained 0.07 percent and Nasdaq lost 0.48 percent, while AMEX Oil was 1.75 percent higher from the previous week.

CELS -- down 0.80 percent for the week but 2.14 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, 16 experienced gains and 35 lost ground.

CELS' best performer for the week was wind energy product and service provider Broadwind Energy ( BWEN), gaining 14.36 percent.

Rounding out the top five CELS performers were biomaterial developer Metabolix ( MBLX), up 12.48 percent; power management device maker ON Semiconductor ( ONNN), higher by 5.22 percent; solar and LED manufacturing equipment provider Aixtron ( AIXG), up 4.20 percent; and power management product manufacturer O2Micro International ( OIIM), 2.83 percent higher for the week.

CELS' worst performer last week was electric vehicle manufacturer Tesla Motors ( TESLA), declining 11.50 percent. Other worst performers included lithium-ion battery system developer Ener1 ( HEV), losing 5.96 percent; solar product maker Solarfun Power Holdings ( SOLF), down 4.78 percent; energy-efficient power management device maker Power-One ( PWER), retreating 4.67 percent; and solar cell and module manufacturer Canadian Solar ( CSIQ), 4.47 percent lower for the week.

QWND -- 1.99 percent higher last week but 35.40 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, nine saw gains and nine experienced losses for the week.

QWND's best pure play performer for the week was wind farm developer China Longyuan Power (0916), up 3.95 percent.

Other top pure play performers included wind turbine maker Nordex ( NDX1), gaining 3.55 percent; wind energy project developer China WindPower Group (0182), rising 2.63 percent; advanced composite material developer Gurit ( GUR), up 2.32 percent; and wind turbine equipment manufacturer China High Speed Transmission Equipment Group (0658), higher by 2.21 percent for the week.

QWND's worst pure play performers were wind turbine gearbox developer Hansen Transmissions International ( HSN), losing 4.10 percent; renewable energy project developer EDP Renovaveis ( EDPR), down 2.03 percent; renewable energy developer EDF Energies Nouvelles ( EEN), losing 1.06 percent; wind turbine maker Repower Systems ( RPW), declining 0.91 percent; and wind turbine manufacturer Vestas Wind Systems ( VWS), falling 0.90 percent from the previous week.

QGRD -- 0.01 percent higher from the previous week and 0.42 percent lower 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, six experienced positive movement while 16 saw losses on the week.

QGRD's best pure play performer was substation equipment maker Jinpan International ( JST), up 2.03 percent for the week.

Rounding out the top five pure play performers were demand management service provider Comverge ( COMV), gaining 1.92 percent; electrical infrastructure specialty contractor MYR Group ( MYRG), rising 1.35 percent; smart meter manufacturer Itron ( ITRI), 1.32 percent higher; and utility specialty contractor Pike Electric ( PIKE), higher by 0.94 percent.

QGRD's worst performers included Power-One, losing 4.67 percent; electricity distribution and automation technology developer Schneider Electric ( SU), down 3.07 percent; Spanish transmission grid operator Red Electrica Corporacion ( REE), down 3.03 percent; communication equipment provider RuggedCom ( RCM), lower by 2.91 percent; and smart grid solution provider PowerSecure International ( POWR), falling 2.87 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.
This commentary comes from an independent investor or market observer as part of TheStreet guest contributor program. The views expressed are those of the author and do not necessarily represent the views of TheStreet or its management.