| A.T. Kearney, Inc. | | www.atkearney.com | Management Consulting & Services |
| ABB Inc. | | www.abb.com | Power Equipment Controls Engineering |
| Accenture | Accenture | www.accenture.com | Management Consulting & Services |
| Aclara | Aclara | www.aclara.com | Metering Communications & Security |
| ACRT, Inc. | | www.acrtinc.com | Environmental Consulting Services |
| AEGIS Insurance Services | AEGIS Insurance Services | www.aegislink.com | Insurance & Risk Management |
| Akin Gump Strauss Hauer & Feld LLP | | www.akingump.com | Law & Legal Services |
| Alpine Mechanical Services, LLC | | www.alpinems.com | Information Systems & Technology |
| ALSTOM Power, Inc. | ALSTOM Power | www.alstom.com | Power Equipment Controls Engineering |
| Alston & Bird LLP | | www.alston.com | Law & Legal Services |
| Altman Vilandrie & Company | | www.altvil.com | Management Consulting & Services |
| Alvarez & Marsal | | www.alvarezandmarsal.com | Management Consulting & Services |
| Ambient Corporation | | www.ambientcorp.com | Information Systems & Technology |
| AMEC, Inc. (formerly MACTEC Engineering and Consulting, Inc.) | | www.amec.com | Engineering & Construction |
| American Heart Association | | www.aha.org | Human Resources Consulting |
| American Wind Energy Association | American Wind Energy Association | www.awea.org | Energy & Policy Consulting |
| ARCADIS US, Inc. | | www.arcadis-us.com | Management Consulting & Services |
| AREVA Inc. | | www.us.areva.com | Fuel Supply & Consulting |
| AREVA T&D Inc. | | www.areva-td.com | Power Equipment Controls Engineering |
| Argos Utilities Corporation | | www.argosutilities.com | Engineering & Construction |
| Asplundh Brush Control Co. | | www.asplundh.com | Environmental Consulting Services |
| AST LINK | | www.amstock.com | Banking & Financial Services |
| AT&T | | www.att.com | Metering Communications & Security |
| AUS Consultants, Inc. | | www.ausinc.com | Management Consulting & Services |
| Autodesk, Inc. | | www.autodesk.com | Information Systems & Technology |
| Automotive Resources International (ARI) | Automotive Resources International (ARI) | www.arifleet.com | Fuel Supply & Consulting |
| Babcock & Wilcox Company | Babcock & Wilcox Company | www.babcock.com | Power Equipment Controls Engineering |
| Bain & Company | | www.bain.com | Management Consulting & Services |
| Baker Botts L.L.P. | | www.bakerbotts.com | Law & Legal Services |
| Balch & Bingham LLP | | www.balch.com | Law & Legal Services |
| Ballard Spahr LLP | Ballard Spahr LLP | www.ballardspahr.com | Law & Legal Services |
| Bates White, LLC | | www.bateswhite.com | Energy & Policy Consulting |
| Bechtel Power Corp. | Bechtel Power Corp. | www.bechtel.com | Engineering & Construction |
| Bibb Engineers | | www.bib-eac.com | Engineering & Construction |
| Black & Veatch | | www.bv.com | Engineering & Construction |
| Black & Veatch, Management Consulting | | www.bv.com/consult | Management Consulting & Services |
| Bloomberg Government | | www.bgov.com | Energy & Policy Consulting |
| Booz & Company (N.A.) Inc. | | www.booz.com | Management Consulting & Services |
| Borden Ladner Gervais LLP | | www.blgcanada.com | Law & Legal Services |
| Boston Consulting Group, The | | www.bcg.com | Management Consulting & Services |
| Bracewell & Giuliani LLP | | www.bgllp.com | Law & Legal Services |
| BRIDGE Energy Group | BRIDGE Energy Group | www.bridgeenergygroup.com | Information Systems & Technology |
| Bridge Strategy Group | | www.bridgestrategy.com | Management Consulting & Services |
| Brooks Utility Products | | www.brooksutility.com | Metering Communications & Security |
| Burns & McDonnell Engineering Co. | Burns & McDonnell Engineering Co. | www.burnsmcd.com | Engineering & Construction |
| Burns and Roe Enterprises Inc. | | www.roe.com | Engineering & Construction |
| C&D Technologies, Inc. | | www.cdtechno.com | Information Systems & Technology |
| Cargill, Inc. | | www.cargill.com/fr3fluid | Environmental Consulting Services |
| CB&I (formerly Shaw Pwr) | CB&I (formerly Shaw Pwr) | www.cbi.com | Engineering & Construction |
| CBRE Clarion Securities | | www.cbreclarion.com | Real Estate |
| CDM Smith | CDM Smith | www.cdmsmith.com | Engineering & Construction; Environmental Consulting Services |
| CH2M HILL Engineers | CH2M HILL Engineers | www.ch2mhill.com | Engineering & Construction |
| Chapman and Cutler LLP | | www.chapman.com | Law & Legal Services |
| Charles River Associates | Charles River Associates | www.crai.com | Management Consulting & Services |
| Choate, Hall & Stewart LLP | | www.choate.com | Law & Legal Services |
| Cisco | | www.cisco.com/go/utilities | Information Systems & Technology |
| Citi | | www.citigroup.com | Banking & Financial Services |
| Cloud Peak Energy | | www.cldpk.com | Fuel Supply & Consulting |
| CohnReznick | | www.cohnreznick.com | Accounting Audit & Consulting |
| Collabera, Inc. | | www.collabera.com | Information Systems & Technology |
| Commonwealth Associates, Inc. (CAI) | Commonwealth Associates, Inc. (CAI) | www.cai-engr.com | Engineering & Construction |
| Comverge | | www.comverge.com | Renewable Energy |
| Concentric Energy Advisors, Inc. | Concentric Energy Advisors, Inc. | www.ceadvisors.com | Management Consulting & Services |
| Contract Land Staff | | www.contractlandstaff.com | Environmental Consulting Services |
| Convergys Corporation | Convergys Corporation | www.convergys.com | Billing & Customer Care |
| Cooper Power Systems | | www.cooperindustries.com | Information Systems & Technology |
| Credit Suisse | | www.credit-suisse.com | Banking & Financial Services |
| Davies Consulting, Inc. | Davies Consulting, Inc. | www.daviescon.com | Management Consulting & Services |
| Davis Wright Tremaine LLP | Davis Wright Tremaine LLP | www.dwt.com | Law & Legal Services |
| Day & Zimmermann | | www.dayzim.com | Maintenance and Construction |
| Day Pitney LLP | | www.daypitney.com | Law & Legal Services |
| Deloitte LLP | Deloitte LLP | www.deloitte.com | Accounting Audit & Consulting |
| DNV KEMA | DNV KEMA | www.kema.com | Management Consulting & Services |
| Doble Engineering Company | | www.doble.com | Engineering & Construction |
| Duane Morris LLP | | www.duanemorris.com | Law & Legal Services |
| E Source | E Source | www.esource.com | Management Consulting & Services |
| Eaton Electrical Inc. | Eaton Electrical Inc. | www.eatonelectrical.com | Power Equipment Controls Engineering |
| Ecology and Environment, Inc. | | www.ene.com | Environmental Consulting Services |
| Ecova, Inc. | | www.ecova.com | Environmental Consulting Services |
| EFACEC USA, Inc. | EFACEC USA, Inc. | www.efacec.com | Power Equipment Controls Engineering |
| EHS Partners, LLC | EHS Partners, LLC | www.ehspartners.com | Management Consulting & Services |
| Electrical Consultants, Inc. | | www.electricalconsultantsinc.com | Engineering & Construction |
| Elster Solutions, LLC | Elster Solutions, LLC | www.elster.com | Metering Communications & Security |
| EMC, LLC | | www.emcllc.us | Energy & Policy Consulting |
| Energate Inc. | | www.energateinc.com | Renewable Energy |
| EnerNOC, Inc. | | www.enernoc.com | Energy & Policy Consulting |
| Environmental Consultants, Inc. | Environmental Consultants, Inc. | www.eci-consulting.com | Environmental Consulting Services |
| Ernst & Young LLP | Ernst & Young LLP | www.ey.com | Accounting Audit & Consulting |
| Esri | | www.esri.com | Information Systems & Technology |
| Evercore Partners | | www.evercore.com | Banking & Financial Services |
| Faegre & Benson LLP | | www.faegre.com | Law & Legal Services |
| First Solar, Inc. | First Solar, Inc. | www.firstsolar.com | Renewable Energy |
| FLUOR Corp. | | www.fluor.com | Engineering & Construction |
| Foley & Lardner LLP | | www.foley.com | Law & Legal Services |
| Fuel Tech, Inc. | Fuel Tech, Inc. | www.ftek.com | Power Equipment Controls Engineering |
| Fugro Consultants, Inc. Infrastructure Div | | www.fugroconsultants.com | Engineering & Construction |
| G4S Technology LLC | | www.g4stechnology.com | Metering Communications & Security |
| GCube Insurance Services, Inc. | | www.gcube-insurance.com | Insurance & Risk Management |
| GE Power & Water | | www.gepower.com | Information Systems & Technology |
| General Cable Corporation | General Cable Corporation | www.generalcable.com | Power Equipment Controls Engineering |
| GeoDigital International | GeoDigital International | www.geodigital.com | Information Systems & Technology |
| GoodCents | | www.goodcents.com | Renewable Energy |
| Google | | www.google.com | Information Systems & Technology |
| Greenhorne & O'Mara | Greenhorne & O'Mara | www.G-and-O.com | Engineering & Construction |
| GreenOrder | | www.greenorder.com | Environmental Consulting Services |
| Grid Capital Advisors | | www.linkedin.com/pub/edward-rahill/24/803/b83 | Management Consulting & Services |
| Grid Net Inc. | | www.grid-net.com | Information Systems & Technology |
| GridSense, Inc. | | www.gridsense.com | Power Equipment Controls Engineering |
| Harkins Cunningham LLP | | www.harkinscunningham.com | Law & Legal Services |
| HCL America Inc. | | www.hcltech.com | Information Systems & Technology |
| HD Supply Utilities | HD Supply Utilities | www.hdsupply.com/utilities | Wholesale Distribution |
| HDR, Inc. | | www.hdrinc.com | Engineering & Construction |
| Heidrick & Struggles | Heidrick & Struggles | www.heidrick.com | Management Consulting & Services |
| Henkels & McCoy, Inc. | Henkels & McCoy, Inc. | www.henkels.com | Engineering & Construction |
| Hogan Lovells US LLP | Hogan Lovells US LLP | www.hoganlovells.com | Law & Legal Services |
| Holland & Knight LLP | Holland & Knight LLP | www.hklaw.com | Law & Legal Services |
| Hunton & Williams LLP | | www.hunton.com | Law & Legal Services |
| Husch Blackwell LLP | | www.huschblackwell.com | Law & Legal Services |
| Hydrodec North America, LLC | Hydrodec North America, LLC | www.hydrodec.com | Fuel Supply & Consulting |
| IBM Corporation | | www.ibm.com | Information Systems & Technology |
| ICF International | ICF International | www.icfi.com | Energy & Policy Consulting |
| IHS CERA | | www.ihscera.com | Energy & Policy Consulting |
| International Window Film Association | | www.iwfa.com | Renewable Energy |
| Internet Security Alliance | | www.isalliance.org | Energy & Policy Consulting |
| INTREN, Inc. | | www.intren.com | Engineering & Construction |
| Itron | Itron | www.itron.com | Metering Communications & Security |
| J.D. Power and Associates | J.D. Power and Associates | www.jdpa.com | Marketing Advertising & Public Relations |
| Japan Electric Power Information Center (JEPIC) | JEPIC | www.jepic.or.jp | Energy & Policy Consulting |
| K&L Gates LLP | K&L Gates LLP | www.klgates.com | Law & Legal Services |
| KBR Power & Industrial | | www.kbr.com | Engineering & Construction |
| Kenny Construction Company | | www.kennyconstruction.com | Engineering & Construction |
| Kiewit Power | Kiewit Power | www.kiewit.com | Engineering & Construction |
| Kleinfelder, Inc. | Kleinfelder, Inc. | www.kleinfelder.com | Engineering & Construction |
| KPMG | | www.kpmg.com | Accounting Audit & Consulting |
| Landis+Gyr Inc. | Landis+Gyr Inc. | www.us.landisgyr.com | Metering Communications & Security |
| Laurel Hill Advisory Group, LLC | | www.laurelhillag.com | Banking & Financial Services |
| Lee Hecht Harrison | | www.lhh.com | Human Resources Consulting |
| Leonard, Street and Deinard | Leonard, Street and Deinard | www.leonard.com | Law & Legal Services |
| Lighthouse Consulting Group, LLC | Lighthouse Consulting Group, LLC | www.lighthouseconsultinggrp.com | Energy & Policy Consulting |
| Lignite Energy Council | | www.lignite.com | Fuel Supply & Consulting |
| Lindsey Manufacturing Co. | | www.lindsey-usa.com | Power Equipment Controls Engineering |
| Lockheed Martin | | www.lockheedmartin.com | Information Systems & Technology |
| Loeb & Loeb LLP | | www.loeb.com | Law & Legal Services |
| Louis Berger Group, Inc. | Louis Berger Group, Inc. | www.louisberger.com | Environmental Consulting Services |
| MacLean Power Systems | | www.macleanpower.com | Power Equipment Controls Engineering |
| Matrix Service Industrial Contractors | | www.matrixservice.com | Power Equipment Controls Engineering |
| McCarter & English, LLP | McCarter & English, LLP | www.mccarter.com | Law & Legal Services |
| McGuireWoods LLP | McGuireWoods LLP | www.mcguirewoods.com | Law & Legal Services |
| McKinney Drilling Co. | McKinney Drilling Co. | www.mckinneydrilling.com | Engineering & Construction |
| McKinsey & Company | | www.mckinsey.com | Management Consulting & Services |
| Merjent Inc. | Merjent Inc. | www.merjent.com | Environmental Consulting Services |
| Michael Best & Friedrich, LLP | | www.michaelbest.com | Law & Legal Services |
| Michels Corporation | | www.michels.us | Engineering & Construction |
| Microsoft Corporation | Microsoft Corporation | www.microsoft.com | Information Systems & Technology |
| Milbank Tweed Hadley & McCloy LLP | | www.milbank.com | Law & Legal Services |
| Mitsubishi Electric Power Products, Inc. | Mitsubishi | www.meppi.com | Power Equipment Controls Engineering |
| Mitsubishi Power Systems Americas, Inc. | | www.mpshq.com | Power Equipment Controls Engineering |
| Moelis & Company | | www.moelis.com | Banking & Financial Services |
| Moran Environmental Recovery, LLC | | www.moranenvironmental.com | Environmental Consulting Services |
| Morgan, Lewis & Bockius, LLP | | www.morganlewis.com | Law & Legal Services |
| Moss & Barnett, PA | | www.moss-barnett.com | Law & Legal Services |
| Motorola Solutions | | www.motorolasolutions.com | Renewable Energy |
| MSE Power Systems, Inc. | | www.msepower.com | Power Equipment Controls Engineering |
| MYR Group Inc. | MYR Group Inc. | www.myrgroup.com | Engineering & Construction |
| Navigant Consulting, Inc. | Navigant Consulting, Inc. | www.navigant.com | Management Consulting & Services |
| Normandeau Associates | | www.normandeau.com | Environmental Consulting Services |
| Novar | | www.novar.com | Information Systems & Technology |
| Noveda Technologies, Inc. | | www.noveda.com | Information Systems & Technology |
| Nuclear Electric Insurance Ltd. | Nuclear Electric Insurance | www.nmlneil.com | Insurance & Risk Management |
| Oliver Wyman | Oliver Wyman | www.oliverwyman.com | Management Consulting & Services |
| OMICRON electronics Corp. USA | OMICRON electronics Corp. USA | www.omicronusa.com | Engineering & Construction |
| OPOWER | OPOWER | www.opower.com | Information Systems & Technology |
| Oracle Utilities Global Business Unit | | www.oracle.com/industries/utilities | Information Systems & Technology |
| OSIsoft | | www.osisoft.com | Information Systems & Technology |
| Osmose Utilities Services, Inc. | Osmose Utilities Services, Inc. | www.osmoseutilities.com | Power Equipment Controls Engineering |
| Pace Global Energy Svcs. | | www.paceglobal.com | Energy & Policy Consulting |
| Parker Poe Adams & Bernstein, LLP | | www.parkerpoe.com | Law & Legal Services |
| Parsons Corporation | | www.parsons.com | Engineering & Construction |
| Pegasus Global Holdings, Inc. | | www.pegasus-global.com | Management Consulting & Services |
| PERI Software Solutions | | www.perisoftware.com | Information Systems & Technology |
| Perkins Coie LLP | | www.perkinscoie.com | Law & Legal Services |
| Petra Solar, Inc. | | www.petrasolar.com | Renewable Energy |
| Pictometry | | www.pictometry.com | Information Systems & Technology |
| Pike Electric, Inc. | Pike Electric Corporation | www.pike.com | Engineering & Construction |
| Pillsbury Winthrop Shaw Pittman LLP | | www.pillsburylaw.com | Law & Legal Services |
| Platts | Platts | www.platts.com | Energy & Policy Consulting |
| Pontoon Solutions | | www.pontoonsolutions.com | Management Consulting & Services |
| POWER Engineers, Inc. | POWER Engineers, Inc. | www.powereng.com | Engineering & Construction |
| PowerAdvocate, Inc. | | www.poweradvocate.com | Information Systems & Technology |
| PowerLine Services, Inc. | | www.powerlinesinc.com | Engineering & Construction |
| Powerlink Transmission Company | | www.powerlinktransco.com | Engineering & Construction |
| PowerPlan, Inc. | | www.powerplan.com | Accounting Audit & Consulting |
| Prenova | Prenova | www.prenova.com | Management Consulting & Services |
| PricewaterhouseCoopers | | www.pwc.com | Accounting Audit & Consulting |
| Promontory Growth & Innovation | | www.promgrowth.com | Management Consulting & Services |
| Protiviti, Inc. | | www.protiviti.com | Insurance & Risk Management |
| Proxibid, Inc. | | www.proxibid.com | Wholesale Distribution |
| Prysmian Communications Cables and Systems USA, LLC | | www.prysmiangroup.com | Power Equipment Controls Engineering |
| Q-Cells North America | | www.qcells.com | Renewable Energy |
| Quanta Services | Quanta Services | www.quantaservices.com | Engineering & Construction |
| RealWinWin, Inc. | RealWinWin, Inc. | www.realwinwin.com | Engineering & Construction |
| Renewable Energy Systems Americas Inc. | | www.res-americas.com | Renewable Energy |
| RHR International Co. | RHR International | www.rhrinternational.com | Management Consulting & Services |
| Robin M. Nuschler, Esq. / Proprietor | | | Law & Legal Services |
| Russell Reynolds Associates, Inc. | | www.russellreynolds.com | Human Resources Consulting |
| SAIC Energy, Environment & Infrastructure, LLC | | www.saic.com | Management Consulting & Services |
| SAP America, Inc. | SAP America | www.sap.com | Information Systems & Technology |
| Sargent & Lundy, LLC | | www.sargentlundy.com | Engineering & Construction |
| Schiff Hardin LLP | | www.schiffhardin.com | Law & Legal Services |
| ScottMadden | ScottMadden | www.scottmadden.com | Management Consulting & Services |
| Senn Delaney | | www.senndelaney.com | Management Consulting & Services |
| Sensus | Sensus | www.sensus.com | Metering Communications & Security |
| Shelton Group | | www.sheltongroup.com | Marketing Advertising & Public Relations |
| Sidley Austin LLP | | www.sidley.com | Law & Legal Services |
| Siemens Energy, Inc. | Siemens Energy, Inc. | www.energy.siemens.com | Power Equipment Controls Engineering |
| Silver Spring Networks | Silver Spring Networks | www.silverspringnet.com | Metering Communications & Security |
| Skadden, Arps, Slate, Meagher & Flom LLP | | www.skadden.com | Law & Legal Services |
| SNC Lavalin Inc. | | www.snclavalin.com | Engineering & Construction |
| Sol Inc. | | www.solarlighting.com | Renewable Energy |
| Solar Electric Power Association (SEPA) | Solar Electric Power Association (SEPA) | www.solarelectricpower.org | Energy & Policy Consulting |
| Solar Frontier Americas Inc. | Solar Frontier Americas Inc. | www.solar-frontier.com | Renewable Energy |
| Spencer Stuart | Spencer Stuart | www.spencerstuart.com | Management Consulting & Services |
| SPIDA Software LLC | | www.spidasoftware.com | Information Systems & Technology |
| Stanley Consultants Inc. | | www.stanleyconsultants.com | Engineering & Construction |
| Stantec Consulting Services, Inc. | | www.stantec.com | Management Consulting & Services |
| Steptoe & Johnson, LLP | Steptoe & Johnson | www.steptoe.com | Law & Legal Services |
| Stoll Keenon Ogden PLLC | | www.skofirm.com | Law & Legal Services |
| Strategic Staffing Solutions | | www.strategicstaff.com | Human Resources Consulting |
| Stroock & Stroock & Lavan LLP | | www.stroock.com | Law & Legal Services |
| Structure | | www.thestructuregroup.com | Management Consulting & Services |
| SunPower Corporation | | www.sunpower.com | Renewable Energy |
| Suzlon Wind Energy Corporation | | www.suzlon.com | Renewable Energy |
| SWCA Environmental Consultants | | www.swca.com | Environmental Consulting Services |
| Swiss Reinsurance Company Ltd. | Swiss Reinsurance | www.swissre.com | Insurance & Risk Management |
| Target Rock Advisors, LLC | | www.targetrockadvisors.com | Management Consulting & Services |
| Tenant Consulting, LLC | | www.tenantconsulting.com | Real Estate |
| Tenaska Marketing Ventures | Tenaska Marketing Ventures | www.tenaska.com | Fuel Supply & Consulting |
| TestAmerica Laboratories, Inc. | TestAmerica Laboratories, Inc. | www.testamericainc.com | Environmental Consulting Services |
| Trilliant Inc. | Trilliant Inc. | www.trilliantinc.com | Metering Communications & Security |
| Tropos Networks | | www.tropos.com | Metering Communications & Security |
| Troutman Sanders LLP | Troutman Sanders | www.troutmansanders.com | Law & Legal Services |
| Twenty First Century Communications, Inc. | TFCCI | www.tfcci.com | Billing & Customer Care |
| UC Synergetic | UC Synergetic) | www.ucsynergetic.com | Engineering & Construction |
| United States Energy Association (USEA) | USEA | www.usea.org | Energy & Policy Consulting |
| URS Corporation | | www.urscorp.com | Engineering & Construction |
| USEC Inc. | USEC | www.USEC.com | Fuel Supply & Consulting |
| UtiliCon Solutions, Limited | | www.utiliconltd.com | Engineering & Construction |
| Utilities Dynamics, Inc. | | www.utilitiesdynamics.com | Energy & Policy Consulting |
| Utilities International, Inc. | | www.utilitiesdynamics.com | Management Consulting & Services |
| Utility Risk Management Corp. | | www.utilityrisk.com | Engineering & Construction; Management Consulting & Services |
| Van Ness Feldman, P.C. | Van Ness Feldman | www.vnf.com | Law & Legal Services |
| Vertex Business Services LLC | | www.vertexgroup.com | Billing & Customer Care |
| Wartsila North America, Inc. | Wartsila North America Inc. | www.wartsila.com | Power Equipment Controls Engineering |
| Waste Management, Inc. | | www.wm.com | Engineering & Construction; Environmental Consulting Services |
| Waterfall Security Solutions | Waterfall Security Solutions | www.waterfall-security.com | Metering Communications & Security |
| WESCO Distribution Inc. | | www.wesco.com | Maintenance and Construction |
| White & Case LLP | White & Case | www.whitecase.com | Law & Legal Services |
| Winston & Strawn LLP | | www.winston.com | Law & Legal Services |
| WorleyParsons | WorleyParsons | www.worleyparsons.com | Engineering & Construction |
| Wright & Talisman, P.C. | | www.wrightlaw.com | Law & Legal Services |