3E Company, Inc.

A2A S.p.A.
ACEA S.p.A.
AEA Technology plc
AES SeaWest, Inc.
Akeena Solar, Inc. [AKNS]
Alkane Energy plc
AMEC Earth & Environmental Inc.
AMEC Geomatrix Consultants, Inc.
American Labelmark Company
Analytical Services, Inc.
Aqua-Pure Ventures Inc.
Aquilex Corporation
ATCO Ltd.

Baden Technologies Inc.
Basin Water, Inc. [BWTRQ.PK]
BBJ Environmental Technologies, Inc. [BBJE.PK]
Beacon Industrial Group, Inc.
BIOQUELL Plc
BPI Energy Holdings, Inc. [BPG]
Business Group Benelux

Caithness Corporation
Calgon Carbon Corporation [CCC]
Calvalley Petroleum Inc.
Canadian Utilities Limited
Carbtrol Corporation
Catalytic Combustion Corporation
CECO Environmental Corp. [CECE]
China Hydroelectric Corporation
CHOICE! Energy Services Retail, L.P.
City Gas Pte Ltd
CLARCOR Inc. [CLC]
Clearford Industries Inc.
Clipper Windpower Plc
Clyde Bergemann EEC
CMS Enterprises Company
Commerce Energy Group, Inc. [EGR]
Community Energy, Inc.
Compact Power Holdings plc
Compressco Partners, L.P.
Culligan International Company
CUNO Incorporated

Dalkia plc
Dürr Environmental, Inc.
Decatur Utilities
Denali Incorporated
domnick hunter group
Donaldson Company, Inc. [DCI]
Dune Energy, Inc. [DNE]
Duoyuan Global Water Inc. [DGW]

eaga plc
Ecovation, Inc.
EcoWater Systems LLC
EDF Energies Nouvelles S.A.
EESTech, Inc. [EESH.PK]
EIP Associates
Endeavour International Corporation [END]
Enerchina Holdings Limited
Entech Solar, Inc. [ENSL.OB]
ENTECH, Inc.
Enterprise Group Holdings Limited
Enviro Voraxial Technology, Inc. [EVTN.OB]
ENVIRON Holdings, Inc.
Environmental Power Corporation [EPG]
Environmental Waste Controls ltd
Environmental, Safety & Health, Inc.
Equisol, LLC
Ergon, Inc.
ESCO Technologies Inc. [ESE]
EVN AG [EVNVY.PK]
Exelon Energy Company

F.B. Leopold Company, Inc.
Falck S.p.A.
FERSA Energías Renovables, S.A.
First Wind Holdings, Inc.
Flanders Corporation [FLDR]
Fuel Tech, Inc. [FTEK]

GDF SUEZ [GDFZY.PK]
GDF SUEZ Energy International
GDF SUEZ Energy North America, Inc.
Geocon Group, Inc.
GeoSyntec Consultants, Inc.
Global Energy Holdings Group, Inc. [GNH]
Global Energy, Inc.
Global Environmental Energy Corporation [GEECF.OB]
Global Water Resources, Inc.
Golden Spirit Enterprises, Ltd. [GSPT.OB]
Graver Technologies, Inc.
Green St. Energy, Inc. [GSTY.OB]
GreenCore Technology, Inc. [AQUA.PK]
GS Holdings Corp.
Gulfmark Energy, Inc.
Gushan Environmental Energy Limited [GU]

H2O Innovation (2000) Inc.
Hargis + Associates, Inc.
HELIX Environmental Planning, Inc.
Hunter Manufacturing Company
Hydranautics

IBERDROLA RENOVABLES, S.A.
INEO Group
Infiltrator Systems Inc.

Knife River Corporation
Koç Holding A.S.
Kronos Advanced Technologies, Inc. [KNOS.PK]

LifeSource Water Systems, Inc.

Marsulex Inc.
MEC Analytical Systems, Inc.
Met-Pro Corporation [MPR]
MFRI, Inc. [MFRI]
Micro Imaging Technology, Inc. [MMTC.OB]
Microgenix Technologies Ltd.
MidAmerican Energy Holdings Company
Millipore Corporation [MIL]
Mintie Corporation
MPM Technologies, Inc. [MPML.OB]
MXenergy Inc.

Navitas Energy, Inc.
New Universe International Group Ltd.
Noble Environmental Power, Inc.
NORESCO
North American Energy Partners Inc. [NOA]
North Wind, Inc.
Northeast Utilities Service Company

Ocean Power Technologies, Inc. [OPTT]
Ohio Pure Water Company
Organic Resource Management Inc.
Orival, Inc.
Ormat Technologies, Inc. [ORA]
Ozocan Corporation

Pall Aeropower Corporation
Pall Corporation [PLL]
PerLorica Inc.
PipeHawk PLC
Plambeck Neue Energien AG
PMFG, Inc. [PMFG]
Porvair plc
PowerSecure International, Inc. [POWR]
PSEG Global L.L.C.
Public Service Electric and Gas Company

RainSoft
ReliOn, Inc.
Renegy Holdings, Inc.
RMT, Inc.

Salamander Energy PLC
Séché Environnement SA
Séchilienne-Sidec
Sea Breeze Power Corp.
Sembcorp Industries Ltd
Seprotech Systems Incorporated
Shell International Renewables
Siemens Water Technologies
Sierra Monitor Corporation [SRMC.OB]
Sionix Corporation [SINX.OB]
SMC Systems, Inc.
SolarCraft Services Inc.
Spice plc
Startech Environmental Corporation [STHK.OB]
Steril-Aire, Inc.
Storm Exploration Inc.
SUEZ Environnement
SUEZ-TRACTEBEL S.A.
Summerleaze Ltd
Summit Energy Services, Inc.
SunEdison
Sutron Corporation [STRN]

Techem AG
Terranext, LLC
TestAmerica Laboratories, Inc.
Theolia
Thermal Energy International Inc.
Total Energy Services Inc.
Tracer Environmental Sciences & Technologies, Inc.
Transtech Industries, Inc. [TRTI.OB]
Trojan Technologies Inc.
TurboSonic Technologies, Inc. [TSTA.OB]

United Air Specialists, Inc.
United Pumping Service Inc.
United Site Services, Inc.
Universal Energy Group Ltd.
USDA Forest Service

Veolia Environmental Services Plc

Wahlco, Inc.
WEDECO AG Water Technology
Western Filter Corporation
Westinghouse Electric Company LLC
Wheelabrator Technologies Inc.

ZCL Composites Inc.
Zephyr Environmental Corporation
Zodiac Marine & Pool