Clean Edge and
's three benchmark clean-tech stock indexes experienced mild movement last week with the
Nasdaq Clean Edge Green Energy Index
up 1.39 percent, the
Nasdaq OMX Clean Edge Global Wind Energy Index
growing 1.95 percent, and the
Nasdaq Clean Edge Smart Grid Infrastructure Index
essentially unchanged at 0.02 percent lower from the previous week.
CELS --- up 1.39 percent for the week and 1.80 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 53 total component securities, 29 experienced gains, 23 experienced losses, and one ended the week unchanged.
CELS' best performer for the week was PV manufacturing equipment provider
, gaining 10.88 percent.
Rounding out the top five CELS performers were vertically integrated PV product maker
Solarfun Power Holdings
, up 12.68 percent; solar wafer and module manufacturer
, higher by 12.56 percent; solar cell and module product maker
(CSIQ - Get Report)
, rising 10.41 percent; and PV module encapsulant maker
(STRI - Get Report)
, up 10.40 percent.
CELS' worst performer last week was electric motor maker
, declining 11.88 percent.
Other worst performers included solar and LED manufacturing equipment provider
, losing 7.83 percent; utility-scale renewable energy project integrator
, down 6.72 percent; demand energy management company
, retreating 6.55 percent; and solar manufacturing equipment provider
, 6.47 percent higher.
QWND -- up 1.95 percent last week but 28.57 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 21 pure play components, seven experienced gains and 14 lost ground.
QWND's best pure play performer for the week was Denmark-based renewable energy developer
Greentech Energy Systems
(GES - Get Report)
, up 10.88 percent.
Other top pure play performers included wind turbine manufacturer
Vestas Wind Systems
, gaining 7.30 percent; wind farm developer
China Longyuan Power Group
, rising 2.70 percent; Australian wind farm developer
, growing 2.56 percent; and wind turbine gearbox supplier
Hansen Transmission International
, 1.91 percent higher.
QWND's worst pure play performers were wind power project developer and operator
Japan Wind Development Co.
, losing 12.14 percent; carbon fiber material composite developer
, down 5.66 percent; wind energy product and service provider
, losing 4.36 percent; Greece-based renewable energy project developer
, declining 4.23 percent; and renewable energy project developer
Gamesa Corporacion Tecnologica
, falling 3.43 percent from the previous week.
QGRD -- 0.02 percent lower 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.