Department of Energy NAICS 541990 contractors

All Other Professional, Scientific, and Technical Services. Contractors in this NAICS lane under Department of Energy.

Agency: Department of Energy

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$2,058,493,990

Visible recipients tied to Department of Energy and NAICS 541990

Aerojet Rocketdyne Of De, INC

Canoga Park, CA

Canoga Park, CA | 32 awards | Top agency National Aeronautics and Space Administration | NAICS 541712

$693,605,017

Aar Government Services, Inc.

Wood Dale, IL

Wood Dale, IL | 429 awards | Top agency Department of Defense | NAICS 488190

$28,645,341

Aecom Energy & Construction, Inc.

Greenwood Village, CO

Greenwood Village, CO | 5 awards | Top agency Department of Defense | NAICS 237990

$7,661,197

Chenega Government Consulting, LLC

Chesapeake, VA

Chesapeake, VA | 5 awards | Top agency Department of Energy | NAICS 541512

$49,395,109

Peraton Risk Decision Inc.

Loveland, CO

Loveland, CO | 54 awards | Top agency Office of Personnel Management | NAICS 561611

$13,322,159

Akima Systems Engineering LLC

Herndon, VA

Herndon, VA | 233 awards | Top agency Department of Defense | NAICS 541512

$16,932,042

Ensco INC

Vienna, VA

Vienna, VA | 124 awards | Top agency Department of Defense | NAICS 541712

$171,128,594

Black & Veatch Special Projects Corp.

Overland Park, KS

Overland Park, KS | 145 awards | Top agency Department of Defense | NAICS 541330

$445,375,044

Yakama Nation

Toppenish, WA

Toppenish, WA | 20 awards | Top agency Department of the Interior | NAICS 541990

$1,106,176

Attainx Inc.

Herndon, VA

Herndon, VA | 182 awards | Top agency Department of Agriculture | NAICS 541511

$3,416,766

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