Top 25 Energy Contractors
Total Purchases: $24,866,891,905
| Rank | Parent Company | Amount | Market Share |
| 1 | Bechtel Group Inc. | $3,509,816,365 | 14.11% |
| 2 | Battelle Memorial Institute | 2,951,529,887 | 11.86 |
| 3 | Lockheed Martin Corp. | 2,568,109,803 | 10.32 |
| 4 | URS Corp. | 2,342,665,003 | 9.42 |
| 5 | McDermott Inc. | 1,893,530,643 | 7.61 |
| 6 | CH2M Hill Companies Ltd. | 1,428,738,031 | 5.74 |
| 7 | University of California System | 1,213,760,873 | 4.88 |
| 8 | Fluor Corp. | 888,246,723 | 3.57 |
| 9 | Honeywell Inc. | 683,871,391 | 2.75 |
| 10 | University of Tennessee System | 601,088,607 | 2.41 |
| 11 | Northrop Grumman Corp. | 437,133,858 | 1.75 |
| 12 | University of Chicago | 395,508,002 | 1.59 |
| 13 | Midwest Research Institute | 315,032,726 | 1.26 |
| 14 | Stanford University | 307,309,240 | 1.23 |
| 15 | G4S PLC | 299,857,407 | 1.20 |
| 16 | State University of New York | 255,087,484 | 1.02 |
| 17 | ITT Corp. | 250,126,927 | 1.00 |
| 18 | Universities Research Association | 217,853,118 | 0.87 |
| 19 | Washington Group International | 204,440,165 | 0.82 |
| 20 | Jacobs Engineering Group Inc. | 204,057,101 | 0.82 |
| 21 | Shaw Group Inc. | 187,449,486 | 0.75 |
| 22 | Duke Energy Corp. | 187,364,486 | 0.75 |
| 23 | BWX Technologies Inc. | 177,924,513 | 0.71 |
| 24 | Energy Enterprise Solutions LLC | 173,465,938 | 0.69 |
| 25 | Oak Ridge Associated Universities | 159,381,364 | 0.64 |
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