Top 25 Energy Department Contractors
Total Purchases: $31,708,688,855
| Rank | Parent Company | Amount | Market Share |
| 1 | Bechtel Group Inc. | $3,794,923,010 | 11.97% |
| 2 | Battelle Memorial Institute | 3,751,810,093 | 11.83 |
| 3 | CH2M Hill Companies Ltd. | 3,328,937,611 | 10.50 |
| 4 | URS Corp. | 2,677,438,702 | 8.44 |
| 5 | Lockheed Martin Corp. | 2,383,180,058 | 7.52 |
| 6 | McDermott Inc. | 1,844,657,013 | 5.82 |
| 7 | Honeywell Inc. | 1,333,946,008 | 4.21 |
| 8 | Northrop Grumman Corp. | 997,824,411 | 3.15 |
| 9 | University of California System | 936,151,967 | 2.95 |
| 10 | Fluor Corp. | 910,622,436 | 2.87 |
| 11 | University of Tennessee System | 836,520,497 | 2.64 |
| 12 | Royal Dutch Petroleum Co. | 498,020,034 | 1.57 |
| 13 | University of Chicago | 469,678,709 | 1.48 |
| 14 | State University of New York | 419,823,002 | 1.32 |
| 15 | Stanford University | 418,443,947 | 1.32 |
| 16 | Washington Group International | 386,209,862 | 1.22 |
| 17 | Energy Solutions Inc. | 369,617,163 | 1.17 |
| 18 | G4S PLC | 309,291,529 | 0.98 |
| 19 | Jacobs Engineering Group Inc. | 286,759,907 | 0.90 |
| 20 | Universities Research Association | 277,649,137 | 0.88 |
| 21 | BWX Technologies Inc. | 254,688,407 | 0.80 |
| 22 | ITT Corp. | 247,165,502 | 0.78 |
| 23 | Shaw Group Inc. | 239,192,729 | 0.75 |
| 24 | Duke Energy Corp. | 239,128,692 | 0.75 |
| 25 | Jefferson Science Associates LLC | 225,097,209 | 0.71 |
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