| American Electric Power Company, Inc. |
2,281 |
| Duke Energy Corporation |
2,083 |
| Eaton Corporation |
1,786 |
| Southern Company |
1,440 |
| Exelon Corporation |
1,420 |
| RBS Sempra Energy |
1,388 |
| Entergy Corporation |
1,374 |
| Edison International |
1,371 |
| Schlumberger Limited |
1,353 |
| United Technologies Corporation |
1,164 |
| PG&E Corporation |
1,092 |
| Consolidated Edison Company of New York, Inc. |
1,065 |
| El Paso Corporation |
1,025 |
| Florida Power & Light Company |
1,024 |
| FirstEnergy Corp. |
1,011 |
| DTE Energy Company |
962 |
| National Grid USA |
914 |
| Schneider Electric |
900 |
| Dominion Resources, Inc. |
885 |
| Constellation Energy Group, Inc. |
863 |
| Sun Express Logistics Pte Ltd |
831 |
| PPL Corporation |
776 |
| The Williams Companies, Inc. |
757 |
| CenterPoint Energy, Inc. |
755 |
| EnCana Corporation |
746 |
| Devon Energy Corporation |
721 |
| Progress Energy Inc. |
706 |
| Ontario Power Generation Inc. |
695 |
| Public Service Enterprise Group Incorporated |
681 |
| PacifiCorp |
679 |
| Ameren Corporation |
655 |
| Xcel Energy Inc. |
608 |
| Allegheny Energy, Inc. |
598 |
| Square-D |
556 |
| Air Liquide Electronics |
552 |
| Alliant Energy Corporation |
548 |
| Reliant Energy |
486 |
| Thomas & Betts Corporation |
484 |
| Arizona Public Service Company |
481 |
| Chesapeake Energy Corporation |
471 |
| NiSource Inc. |
468 |
| BOC Gases |
455 |
| SCANA Corporation |
433 |
| Portland General Electric Company |
424 |
| Northeast Utilities |
407 |
| Hydro-Quebec |
404 |
| BJ Services Company |
400 |
| EDF Energy |
396 |
| Centrica plc |
387 |
| NV Energy Inc |
380 |
| BG Group plc |
375 |
| SRP Salt River Project |
374 |
| Lower Colorado River Authority |
357 |
| CHS Inc. |
352 |
| OGE Energy Corp. |
346 |
| Pepco Holdings, Inc. |
345 |
| Integrys Energy Group, Inc. |
345 |
| Murphy Oil Corporation |
345 |
| Dynegy Inc. |
343 |
| Los Angeles Department of Water and Power |
330 |
| Wisconsin Energy Corporation |
325 |
| Seminole Electric Cooperative, Inc. |
321 |
| TECO Energy, Inc. |
308 |
| PNM Resources, Inc. |
306 |
| Nebraska Public Power District |
296 |
| MidAmerican Energy Holdings Company |
292 |
| NRG Energy, Inc. |
291 |
| Puget Energy Inc |
291 |
| Westar Energy, Inc. |
284 |
| AGL Resources, Inc. |
284 |
| Platts |
283 |
| Enterprise Products Partners L.P |
276 |
| Southwest Gas Corporation |
274 |
| Spectra Energy Partners, L.P. |
272 |
| Calpine Corporation |
269 |
| UniSource Energy Corporation |
264 |
| Southern Union Company |
260 |
| Idaho Power Company |
259 |
| Tenaska, Inc. |
259 |
| Avista Corporation |
256 |
| Sacramento Municipal Utility District |
255 |
| XTO Energy Inc. |
254 |
| CPS Energy |
249 |
| Fortis Corporation |
248 |
| Minnesota Power |
244 |
| Manitoba Hydro-Electric |
241 |
| Jindal Steels |
239 |
| British Columbia Hydro and Power Authority |
238 |
| Omaha Public Power District |
237 |
| E.ON UK plc |
235 |
| Direct Energy Marketing Limited |
233 |
| Basin Electric Power Cooperative |
232 |
| Baltimore Gas and Electric Company |
231 |
| Great Plains Energy Incorporated |
231 |
| M-I SWACO |
226 |
| Questar Corporation |
226 |
| TNP Enterprises, Inc. |
225 |
| SaskPower |
219 |
| Enron Creditors Recovery Corporation |
217 |
| Hydro One Inc. |
213 |
| EQT Corporation |
205 |
| Caterpillar Solar Turbines |
198 |
| TransCanada PipeLines Limited |
198 |
| TransAlta Corporation |
193 |
| Hawaiian Electric Industries, Inc. |
192 |
| Austin Energy |
186 |
| Nicor Inc. |
186 |
| Pride International, Inc. |
184 |
| Mirant Corporation |
184 |
| Vectren Corporation |
182 |
| EPCOR Utilities Inc. |
176 |
| Scottish & Southern Energy P.L.C. |
171 |
| Midwest Independent Transmission System Operator, Inc. |
170 |
| British Energy |
170 |
| PJM Interconnection, L.L.C. |
166 |
| United Utilities plc |
166 |
| ICAP Energy LLC |
165 |
| Electric Reliability Council of Texas, Inc. |
162 |
| NB Power |
162 |
| Cleco Corporation |
160 |
| NorthWestern Corporation |
159 |
| Union Gas Limited |
157 |
| Duquesne Light Holdings, Inc. |
156 |
| Colorado Springs Utilities |
155 |
| Southern California Gas Company |
154 |
| Suburban Propane |
154 |
| Otter Tail Power Company |
150 |
| Energy East Corporation |
146 |
| Pinnacle West Capital Corporation |
146 |
| Stuart C. Irby Co. |
146 |
| City Water, Light and Power |
144 |
| Quanta Services, Inc. |
144 |
| MDU Resources Group, Inc. |
144 |
| Sargent & Lundy LLC |
144 |
| Jacksonville Electric Authority (JEA) |
144 |
| Tri-State Generation and Transmission Association, Inc. |
142 |
| The Laclede Group, Inc. |
137 |
| Technip Offshore Canada Ltd. |
136 |
| Conectiv Energy |
134 |
| NSTAR |
133 |
| Great River Energy |
129 |
| The United Illuminating Company |
129 |
| Orlando Utilities Commission |
128 |
| Washington Gas |
128 |
| Piedmont Natural Gas Company, Inc. |
123 |
| MGE Energy, Inc. |
123 |
| Peoples Energy Corporation |
122 |
| Northern Natural Gas Company |
121 |
| Northwest Natural Gas Company |
121 |
| CH Energy Group, Inc. |
120 |
| Dayton Power & Light aka DPL,INC |
114 |
| Gainesville Regional Utilities Inc. |
113 |
| Blue Bird Corporation |
113 |
| City Public Service |
108 |
| Chelan County Public Utility District |
100 |
| Rochester Gas and Electric Corporation |
99 |
| Illinois Power Company |
98 |
| East Kentucky Power Cooperative |
98 |
| El Paso Electric Company |
98 |
| New York Independent System Operator, Inc. |
97 |
| Black Hills Corp. |
94 |
| Citizens Energy Group |
94 |
| SUEZ Energy North America, Inc. |
94 |
| Durham (ON), Regional Municipality |
92 |
| Central Maine Power Company |
86 |
| UGI Utilities |
85 |
| New York State Electric |
84 |
| COOPERATIVE, INC |
83 |
| Wolf Creek Nuclear Operating Corporation |
82 |
| FuelCell Energy |
82 |
| Eugene Water |
81 |
| Philadelphia Gas Works |
81 |
| RWE nPower |
81 |
| Snohomish County PUD |
79 |
| Energy Northwest |
79 |
| Forest Electric Corp. |
79 |
| Generac Power Systems Inc |
78 |
| Green Mountain Power Corporation |
78 |
| Memphis Light, Gas and Water Division |
78 |
| Coleman Cable, Inc. |
77 |
| Linde North America Inc. |
77 |
| Lincoln Electric System |
76 |
| UGI Corporation |
75 |
| Georgia System Operations Corporation |
74 |
| North Carolina Electric Membership Corporation |
74 |
| South Jersey Industries, Inc. |
73 |
| MTU Onsite Energy Corporation |
71 |
| Chesapeake Utilities Corporation |
71 |
| Hoosier Energy Rural Electric Cooperative, Inc. |
71 |
| MarkWest Energy Partners, L.P. |
71 |
| Targa Resources Inc. |
71 |
| Dairyland Power Cooperative |
68 |
| Pepco Energy Services |
68 |
| GA Elec Membership Cooperative |
68 |
| Elster Group |
67 |
| Empire District Electric Company |
67 |
| Integrys Energy Services, Inc. |
66 |
| Clay Electric Cooperative, Inc. |
65 |
| ILSCO |
63 |
| Brookfield Renewable Power |
63 |
