| 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 |
| AlertEnterprise Inc. | | www.alertenterprise.com | Metering Communications & Security |
| 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 |
| 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 |
| Automotive Resources International (ARI) | Automotive Resources International (ARI) | www.arifleet.com | Fuel Supply & Consulting |
| 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 |
| Bridge Strategy Group | | www.bridgestrategy.com | Management Consulting & Services |
| Bruder, Gentile & Marcoux, L.L.P. | Bruder, Gentile & Marcoux, L.L.P. | www.brudergentile.com | Law & Legal Services |
| 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 |
| CDM | CDM | www.cdm.com | Engineering & Construction; Environmental Consulting Services |
| CH2M HILL Engineers | CH2M HILL Engineers | www.ch2mhill.com | Engineering & Construction |
| Charles River Associates | Charles River Associates | www.crai.com | Management Consulting & Services |
| Choate, Hall & Stewart LLP | | www.choate.com | Law & Legal Services |
| Cisco Systems, Inc. | | www.cisco.com | Information Systems & Technology |
| Citi | | www.citigroup.com | Banking & Financial Services |
| Cleaver-Brooks | Cleaver-Brooks | www.cbboilers.com | Power Equipment Controls Engineering |
| Cloud Peak Energy | | www.cldpk.com | Fuel Supply & Consulting |
| Commonwealth Associates, Inc. (CAI) | Commonwealth Associates, Inc. (CAI) | www.cai-engr.com | Engineering & Construction |
| Concentric Energy Advisors, Inc. | Concentric Energy Advisors, Inc. | www.ceadvisors.com | Management Consulting & Services |
| Convergys Corporation | Convergys Corporation | www.convergys.com | Billing & Customer Care |
| CopperLeaf Technologies Inc. | CopperLeaf Technologies Inc. | www.copperleafgroup.com | Information Systems & Technology |
| CPower, Inc. | CPower, Inc. | www.consumerpowerline.com | Energy & Policy Consulting |
| Credit Suisse | | www.credit-suisse.com | Banking & Financial Services |
| CURRENT Group, LLC | CURRENT Group, LLC | www.currentgroup.com | Information Systems & Technology |
| 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 |
| Dewey & LeBoeuf LLP | Dewey & LeBoeuf | www.deweyleboeuf.com | Law & Legal Services |
| Doble Engineering Company | | www.doble.com | Engineering & Construction |
| DriveCam, Inc. | | www.drivecam.com | Insurance & Risk Management |
| 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 |
| Ecos IQ | | www.ecosconsulting.com | Renewable Energy |
| 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 |
| Elster Solutions, LLC | Elster Solutions, LLC | www.elster.com | Metering Communications & Security |
| Energy Management Collaborative | | www.emcllc.us | Energy & Policy Consulting |
| EnerNOC, Inc. | | www.enernoc.com | Energy & Policy Consulting |
| Environmental Consultants, Inc. | Environmental Consultants, Inc. | www.eci-consulting.com | Environmental Consulting Services |
| Environmental Systems Corp. (ESC) | | www.envirosys.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 |
| Fidelity Investments | | www.fidelity.com | Banking & Financial Services |
| First Solar, Inc. | First Solar, Inc. | www.firstsolar.com | Renewable Energy |
| Five Point Partners, LLC | | www.fivepoint.net | Information Systems & Technology |
| FLUOR Corp. | | www.fluor.com | Engineering & Construction |
| Foley & Lardner LLP | | www.foley.com | Law & Legal Services |
| Fry Electrical Construction | | www.fryelec.com | Engineering & Construction |
| Fuel Tech, Inc. | Fuel Tech, Inc. | www.ftek.com | Power Equipment Controls Engineering |
| GCube Insurance Services, Inc. | | www.gcube-insurance.com | Insurance & Risk Management |
| GE Energy | | 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 |
| Greenhorne & O'Mara | Greenhorne & O'Mara | www.G-and-O.com | Engineering & Construction |
| GreenOrder | | www.greenorder.com | Environmental Consulting Services |
| Grid Net Inc. | | www.grid-net.com | Information Systems & Technology |
| Halcrow Inc. | | www.halcrow.com | Management Consulting & Services |
| 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 |
| Hubbell Power Systems, Inc. | Hubbell Power Systems, Inc. | www.hubbell.com | Power Equipment Controls Engineering |
| 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 |
| Intelligent Access Systems | | www.iasnc.com | Metering Communications & Security |
| 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 | Power Equipment Controls Engineering |
| KEMA | KEMA | www.kema.com | Management Consulting & Services |
| Kenny Construction Company | | www.kennyconstruction.com | Engineering & Construction |
| Kiewit Power | Kiewit Power | www.kiewit.com | Engineering & Construction |
| Kleinfelder, Inc. | | www.kleinfelder.com | Environmental Consulting Services |
| KPMG | | www.kpmg.com | Accounting Audit & Consulting |
| L.E.K. Consulting LLC | L.E.K. Consulting LLC | www.lek.com | Management Consulting & Services |
| 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 |
| MF Global / Washington Research Group | | www.mfglobal.com | Banking & Financial Services |
| 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 |
| Morgan, Lewis & Bockius, LLP | | www.morganlewis.com | Law & Legal Services |
| Moss & Barnett | | www.moss-barnett.com | Law & Legal Services |
| 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 |
| Niagara Conservation Corp. | Niagara Conservation Corp. | www.niagaraconservation.com | Environmental Consulting Services |
| NICE Systems, Inc. | NICE Systems, Inc. | www.nice.com | Metering Communications & Security |
| Nixon Peabody LLP | | www.nixonpeabody.com | Law & Legal Services |
| Novar | | www.novar.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 |
| Patrick Energy Services Inc. | | www.patrickesi.com | Engineering & Construction |
| Peabody Energy | | www.peabodyenergy.com | Fuel Supply & Consulting |
| 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 |
| Pike Electric, Inc. | | www.pike.com | Engineering & Construction |
| Platts | Platts | www.platts.com | Energy & Policy Consulting |
| POWER Engineers, Inc. | POWER Engineers, Inc. | www.powereng.com | Engineering & Construction |
| PowerAdvocate, Inc. | | www.poweradvocate.com | Information Systems & Technology |
| Prenova | Prenova | www.prenova.com | Management Consulting & Services |
| PricewaterhouseCoopers | | www.pwc.com | Accounting Audit & Consulting |
| Protiviti, Inc. | | www.protiviti.com | Insurance & Risk Management |
| Q-Cells North Ameica | | www.qcells.com | Renewable Energy |
| Quanta Services | Quanta Services | www.quantaservices.com | Engineering & Construction |
| RealWinWin, Inc. | RealWinWin, Inc. | www.realwinwin.com | Engineering & Construction |
| Reznick Group | | www.reznickgroup.com | Accounting Audit & Consulting |
| RHR International Co. | RHR International | www.rhrinternational.com | Management Consulting & Services |
| Russell Reynolds Associates, Inc. | | www.russellreynolds.com | Human Resources Consulting |
| SageQuest, LLC | | www.sage-quest.com | Information Systems & Technology |
| SAIC | | 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 |
| Shaw Power | Shaw Power | www.shawgrp.com | Engineering & Construction |
| Shelton Group | | www.sheltongroupinc.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 |
| SmartSynch | SmartSynch | www.smartsynch.com | Metering Communications & Security |
| 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 |
| Spectra Energy Corp. | Spectra Energy Corp. | www.spectraenergy.com | Fuel Supply & Consulting |
| Spencer Stuart | Spencer Stuart | www.spencerstuart.com | Management Consulting & Services |
| Stanley Consultants Inc. | | www.stanleyconsultants.com | Engineering & Construction |
| Steptoe & Johnson, LLP | Steptoe & Johnson | www.steptoe.com | Law & Legal Services |
| Strategic Staffing Solutions | | www.strategicstaff.com | Human Resources Consulting |
| Stroock & Stroock & Lavan LLP | | www.stroock.com | Law & Legal Services |
| SunPower Corporation | | www.sunpowercorp.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 |
| TD Bank | | www.tdbank.com | Banking & Financial Services |
| Tenant Consulting, LLC | | www.tenantconsulting.com | Renewable Energy |
| Tenaska Marketing Ventures | Tenaska Marketing Ventures | www.tenaska.com | Fuel Supply & Consulting |
| Tendril Inc. | | www.tendrilinc.com | Information Systems & Technology |
| TestAmerica Laboratories, Inc. | TestAmerica Laboratories, Inc. | www.testamericainc.com | Environmental Consulting Services |
| The Structure Group | | www.thestructuregroup.com | Management 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 | Van Ness Feldman | www.vnf.com | Law & Legal Services |
| Vertex Business Services LLC | | www.vertexoutsourcing.com | Billing & Customer Care |
| VHB Inc. aka Vanasse Hangen Brustlin | | http://www.vhb.com | Environmental Consulting Services |
| Wartsila North America Inc. | Wartsila North America Inc. | www.wartsila.com | Power Equipment Controls Engineering |
| Waste Management | | www.wm.com | Environmental Consulting Services |
| Waterfall Security Solutions | Waterfall Security Solutions | www.waterfall-security.com | Metering Communications & Security |
| Westinghouse Electric Company | | www.westinghousenuclear.com | Fuel Supply & Consulting |
| White & Case LLP | White & Case | www.whitecase.com | Law & Legal Services |
| WorleyParsons | WorleyParsons | www.worleyparsons.com | Engineering & Construction |
| Wright & Talisman, P.C. | | www.wrightlaw.com | Law & Legal Services |