On Monday, Q-Cells announced it is terminating a long-term supply agreement with the company. Other worst performers included advanced materials producer
, falling 9.66 percent; energy storage and power delivery system maker
(MXWL - Get Report)
, losing 8.09 percent; lithium battery maker
China BAK Battery
(CBAK - Get Report)
, down 5.17 percent; and developer of advanced energy delivery technology
(AMSC - Get Report)
, 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
, gaining 9.38 percent.
Other top performers included composite materials producer
, climbing 5.81 percent; turbine manufacturer
Vestas Wind Systems
, up 5.23 percent; Australia-based wind farm owner
, growing 5.21%; and project developer
, rising 4.95%.
QWND's worst performers were wind farm operator
, down 4.92 percent;
(AMSC - Get Report)
, losing 4.89 percent; wind turbine manufacturer
, falling 3.17 percent; wind farm operator
Japan Wind Development
, down 3.06 percent; and carbon fiber maker
, 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
, rising 12 percent; energy demand management company
, up 9.11 percent; transformer manufacturer
, climbing 8.17 percent; and developer of energy data systems
, growing 5.91 percent.