Anyway, my favorite (so far) clean green etf is PBW 

http://www.powershares.com/products/holdings.aspx?ticker=PBW

PBW - WilderHill Clean Energy Portfolio As of 1/15/2008

  	  	                                    % of Fund 

Consumer Discretionary                             5.66%	 	
 BLDP	 Ballard Power Systems Inc. 	                  2.45%
 ARGN	 Amerigon Inc. 	                                  2.16%
 FSYS	 Fuel Systems Solutions Inc. 	                  1.05%

Consumer Staples                                   3.02%	 	
 CZZ	 Cosan Ltd. 	                                  3.02%

Energy                                             5.65%	 	
 VSE	 VeraSun Energy Corp. 	                          1.76%
 VRNM	 Verenium Corp. 	                          1.63%
 PEIX	 Pacific Ethanol Inc.                             1.63%
 NBF	 Nova Biosource Fuels Inc. 	                  0.64%

Industrials                                        30.34%	 	
 JASO	 JA Solar Holdings Co. Ltd. (ADS)                 3.56%
 FSLR	 First Solar Inc. 	                          3.05%
 ESLR	 Evergreen Solar Inc. 	                          3.02%
 YGE	 Yingli Green Energy Holding Co. Ltd. (ADS) 	  2.89%
 STP	 Suntech Power Holdings Co. Ltd. (ADS) 	          2.81%
 AMSC	 American Superconductor Corp. 	                  2.72%
 ENER	 Energy Conversion Devices Inc. 	          2.32%
 FCEL	 FuelCell Energy Inc. 	                          2.23%
 ULBI	 Ultralife Batteries Inc.                         1.73%
 PLUG	 Plug Power Inc. 	                          1.66%
 MDTL	 Medis Technologies Ltd. 	                  1.55%
 CBAK	 China BAK Battery Inc. 	                  1.31%
 ASTI	 Ascent Solar Technologies Inc.                   0.60%
 ACPW	 Active Power Inc. 	                          0.52%        
 UQM	 UQM Technologies Inc.                            0.36%

Information Technology                             35.87%	 	
 CREE	 Cree Inc. 	                                  3.63%
 AMAT	 Applied Materials Inc. 	                  3.60%
 EMKR	 EMCORE Corp. 	                                  3.59% 
 ITRI	 Itron Inc. 	                                  3.56%
 ELON	 Echelon Corp. 	                                  3.21%
 WFR	 MEMC Electronic Materials Inc. 	          3.11%
 PANL	 Universal Display Corp. 	                  3.10%
 IRF	 International Rectifier Corp. 	                  2.94%
 SPWR	 SunPower Corp. (Cl A) 	                          2.89%
 TSL	 Trina Solar Ltd. (ADS) 	                  2.83%
 COMV	 Comverge Inc. 	                                  2.58%
 MXWL	 Maxwell Technologies Inc. 	                  0.84%

Materials                                           9.28%	 	
 ZOLT	 Zoltek Cos. 	                                  3.64%
 OMG	 OM Group Inc. 	                                  3.30%
 APD	 Air Products & Chemicals Inc. 	                  2.34%

Utilities                                          10.17%	 	
 ORA	 Ormat Technologies Inc. 	                  3.66%
 POR	 Portland General Electric Co. 	                  3.13%
 IDA	 IDACORP Inc. 	                                  3.13%
 OPTT	 Ocean Power Technologies Inc.                    0.25%

		
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