Top 25 Energy Department Contractors
Total Purchases: $22,872,500,392
| Rank | Parent Company | Amount | Market Share |
| 1 | Lockheed Martin Corp. | $2,780,207,045 | 12.15% |
| 2 | University of California System | 2,533,944,702 | 11.07 |
| 3 | Bechtel Group Inc. | 2,249,480,944 | 9.83 |
| 4 | Battelle Memorial Institute | 2,233,564,526 | 9.76 |
| 5 | URS Corp. | 1,653,900,917 | 7.23 |
| 6 | McDermott Inc. | 1,128,076,456 | 4.93 |
| 7 | Fluor Corp. | 944,606,577 | 4.12 |
| 8 | Washington Group International | 780,052,842 | 3.41 |
| 9 | BWX Technologies Inc. | 733,604,670 | 3.20 |
| 10 | CH2M Hill Companies Ltd. | 641,043,445 | 2.80 |
| 11 | University of Tennessee System | 608,565,816 | 2.66 |
| 12 | Honeywell Inc. | 569,316,206 | 2.48 |
| 13 | Brookhaven Science Assoc. LLC | 489,596,202 | 2.14 |
| 14 | National Security Technologies LLC | 450,179,135 | 1.96 |
| 15 | Midwest Research Institute | 377,459,778 | 1.65 |
| 16 | Stanford University | 368,937,802 | 1.61 |
| 17 | G4S PLC | 297,327,103 | 1.29 |
| 18 | Jacobs Engineering Group Inc. | 253,254,699 | 1.10 |
| 19 | University of Chicago | 242,166,037 | 1.05 |
| 20 | Universities Research Assn. | 179,140,265 | 0.78 |
| 21 | Energy Enterprise Solutions LLC | 153,267,147 | 0.67 |
| 22 | Raytheon Co. | 144,832,217 | 0.63 |
| 23 | SAIC | 137,985,099 | 0.60 |
| 24 | Oak Ridge Assoc. Universities | 132,837,033 | 0.58 |
| 25 | Shaw Group Inc. | 131,460,979 | 0.57 |
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