PBW quarterly rebalance Additions CPN Calpine Corp GU Gushan Environmental Energy Ltd RBCN Rubicon Technology Inc RZ Raser Technologies Inc SOL Renesola Ltd SPIR Spire Corp Deletion UQM UQM Technologies Inc <pre>Ticker Component Name Old Share Weight New Share Weights ACPW Active Power Inc 1001435 1203019 AMAT Applied Materials Inc 918578 497066 AMSC American Superconductor Cor 521502 421583 APD Air Products & Chemicals Inc 111205 94947 ARGN Amerigon Inc 533347 426736 ASTI Ascent Solar Technologies Inc 133713 168986 BLDP Ballard Power Systems Inc 2298242 1676465 CBAK China BAK Battery Inc 2814755 2286045 COMV Comverge Inc 602993 884882 CPN Calpine Corp Addition 513987 CREE Cree Inc 642404 329379 CZZ Cosan Ltd 981562 720641 ELON Echelon Corp 837121 723879 EMKR Emcore Corp 1208188 1914537 ENER Energy Conversion Devices Inc 378474 329482 ESLR Evergreen Solar Inc 960651 1348106 FCEL FuelCell Energy Inc 1103424 1090833 FSLR First Solar Inc 64429 51777 FSYS Fuel Systems Solutions Inc 833429 168563 GU Gushan Environmental Energy Ltd Addition 888383 IDA Idacorp Inc 397773 289049 IRF International Rectifier Corp 490718 459126 ITRI Itron Inc 173024 106664 JASO JA Solar Holdings Co Ltd 723753 644680 MDTL Medis Technologies Ltd 748441 769118 MXWL Maxwell Technologies Inc 331477 822638 NBF Nova Biosource Fuels Inc 4358735 1338458 OMG OM Group Inc 226319 159253 OPTT Ocean Power Technologies Inc 206392 160021 ORA Ormat Technologies Inc 319200 276157 PANL Universal Display Corp 797563 695961 PEIX Pacific Ethanol Inc 1307621 446153 PLUG Plug Power Inc 2715107 2259583 POR Portland General Electric Co 529820 407768 RBCN Rubicon Technology Inc Addition 316485 RZ Raser Technologies Inc Addition 1356424 SOL Renesola Ltd Addition 1017659 SPIR Spire Corp Addition 156067 SPWR Sunpower Corp 127797 158899 STP Suntech Power Holdings Co Ltd 204852 309383 TSL Trina Solar Ltd 335036 371179 ULBI Ultralife Batteries Inc 699363 736152 UQM UQM Technologies Inc 908650 Deletion VRNM Verenium Corp 2175201 2623219 VSE VeraSun Energy Corp 700080 1144493 WFR MEMC Electronic Materials Inc 195197 140584 YGE Yingli Green Energy Holding Ltd 437166 660376 ZOLT Zoltek Cos Inc 422668 433301 </pre> <a href="http://www.amex.com/amextrader/?href=/amextrader/dailylist/dailyListMain.jsp" target="_blank">http://www.amex.com/amextrader/?href=/amextrader/dailylist/dailyListMain.jsp</a>