Up to date Index composition, weighting and pricing
As of March 31, 2012
| Symbol | Company | Market Capitalization (USD Millions) | Index Weight | Domicile Country |
| SIE.DE | Siemens | $ 88,114 | 2.99% | Germany |
| ABB.VX | ABB | $ 69,651 | 3.05% | Switzerland |
| SU.PA | Schneider Electric | $ 34,909 | 2.93% | France |
| JCI | Johnson Controls | $ 22,086 | 3.03% | USA |
| GLW | Corning | $ 21,768 | 3.01% | USA |
| SGSN.VX | SGS | $ 15,217 | 3.07% | Switzerland |
| ADSK | Autodesk | $ 9,569 | 2.81% | USA |
| ROP | Roper Industries | $ 9,564 | 2.76% | USA |
| BWA | Borg Warner | $ 9,210 | 2.75% | USA |
| ALFA.ST | Alfa Laval | $ 9,027 | 2.86% | Sweden |
| NZYM-B.CO | Novozymes -B- | $ 7,903 | 2.81% | Denmark |
| PLL | Pall Corp. | $ 6,929 | 2.78% | USA |
| TRMB | Trimble Navigation | $ 6,718 | 2.47% | USA |
| ANSS | ANSYS | $ 6,014 | 2.47% | USA |
| DCI | Donaldson Co. | $ 5,363 | 2.48% | USA |
| XYL | Xylem | $ 5,138 | 2.49% | USA |
| 3800.HK | GCL-Poly Energy | $ 4,306 | 2.10% | Hong Kong |
| CREE | CREE, Inc. | $ 3,606 | 2.11% | USA |
| PLCM | Polycom Inc | $ 3,370 | 2.02% | USA |
| 6370:JP | Kurita Water Industries | $ 3,149 | 1.97% | Japan |
| SGL.DE | SGL Carbon | $ 3,115 | 2.03% | Germany |
| WWD | Woodward Corp. | $ 2,952 | 1.91% | USA |
| EDC:PM | Energy Development Corp | $ 2,623 | 1.93% | Philippines |
| CLC | Clarcor | $ 2,475 | 1.85% | USA |
| HXL | Hexcel | $ 2,382 | 1.83% | USA |
| 0916.HK | China Longyuan Power Group | $ 2,265 | 1.65% | PRC |
| WPT.TO | Westport Innovations | $ 2,249 | 0.70% | Canada |
| FSLR | First Solar | $ 2,165 | 1.62% | USA |
| VWS.CO | Vestas Wind Systems | $ 2,067 | 1.65% | Denmark |
| ITRI | Itron | $ 1,839 | 1.51% | USA |
| ELT | Elster Group | $ 1,785 | 1.05% | Germany |
| KRX.IR | Kingspan Group | $ 1,732 | 1.46% | Ireland |
| ENS | Enersys | $ 1,653 | 1.48% | USA |
| TTEK | Tetra Tech, Inc. | $ 1,646 | 1.39% | USA |
| PPO | Polypore International | $ 1,635 | 1.42% | USA |
| S92.DE | SMA Solar Technologies | $ 1,573 | 0.91% | Germany |
| ERF.PA | Eurofins | $ 1,567 | 1.48% | Belgium |
| 6856:JP | Horiba Ltd. | $ 1,456 | 1.39% | Japan |
| ARC.AS | Arcadis | $ 1,449 | 1.12% | Netherlands |
| TOMFUT.OL | Tomra Systems | $ 1,209 | 1.09% | Norway |
| POWI | Power Integrations | $ 1,042 | 1.10% | USA |
| 600.SI | Hyflux Ltd. | 1,024 | 0.99% | Singapore |
| GTAT | GT Advanced Technologies | $ 1,022 | 1.04% | USA |
| ESE | Esco Technologies | $ 981 | 0.99% | USA |
| ORA | Ormat Technologies | $ 915 | 0.73% | USA |
| LNN | Lindsay | $ 839 | 1.00% | USA |
| S1A.PA | Saft Groupe | $ 815 | 1.02% | France |
| GAM.MC | Gamesa Corp Technologica | $ 787 | 0.81% | Spain |
| MBTN.SW | Meyer Burger Technology | $ 765 | 1.00% | Switzerland |
| AEGN | Aegion | 703 | 0.83% | USA |
| 5857:JP | Asahi Holdings | $ 697 | 0.74% | Japan |
| 658.HK | China High Speed Transm. | $ 695 | 0.71% | Hong Kong |
| MG | Mistras Group | $ 662 | 0.74% | USA |
| AMRC | Ameresco | $ 595 | 0.68% | USA |
| AEIS | Advanced Energy Industries | $ 568 | 0.74% | USA |
| FSYS | Fuel Systems Solutions | $ 524 | 0.67% | USA |
| BMI | Badger Meter | 510 | 0.69% | USA |
| BWT.VI | Best Water Technology | $ 301 | 0.51% | Austria |
| KAI | Kadant | $ 280 | 0.65% | USA |
| GUR.SW | Gurit Holdings | $ 268 | 0.49% | Switzerland |
| VNP.TO | 5N Plus | $ 257 | 0.47% | Canada |
| WFI.TO | WaterFurnace Renewable Energy | $ 249 | 0.51% | USA |
| RBCN | Rubicon Technology | $ 235 | 0.48% | USA |