Department of Energy NAICS 541990 and PSC R499 contractors

All Other Professional, Scientific, and Technical Services. SUPPORT- PROFESSIONAL: OTHER. Cross-code overlap under Department of Energy.

Department of Energy · NAICS 541990 · PSC R499

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$2,899,903,784

State overlap

Top recipients

Visible recipients in the Department of Energy overlap of NAICS 541990 and PSC R499

Chenega Government Consulting, LLC

Chesapeake, VA

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

$170,677,238

Peraton Risk Decision Inc.

Loveland, CO

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

$320,163,986

Akima Systems Engineering LLC

Herndon, VA

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

$38,776,656

Ensco INC

Vienna, VA

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

$347,523,104

Attainx Inc.

Herndon, VA

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

$69,463,169

Chenega Professional & Technical Services LLC

Chesapeake, VA

Chesapeake, VA | 76 awards | Top agency Department of Defense | NAICS 541511

$164,961,987

Parsons Government Services International Inc.

Pasadena, CA

Pasadena, CA | 46 awards | Top agency Department of Defense | NAICS 541990

$444,775,533

Paragon Technical Services, Inc.

Hilliard, OH

Hilliard, OH | 16 awards | Top agency Department of Energy | NAICS 561612

$260,581,228

Old Harbor Solutions LLC

Anchorage, AK

Anchorage, AK | 66 awards | Top agency Department of Defense | NAICS 541611

$12,629,550

Bluepath Labs LLC

Washington, DC

Washington, DC | 104 awards | Top agency Department of Energy | NAICS 541990

$22,514,595

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