PSC codes › AH51 PSC AH51 — Natural Resources and Environment R&D Services; Other Natural Resources; Basic Research: federal contracts $4.8M obligated in FY2025
-66.6% change FY2024→FY2025
0 open solicitations
11 new awards, last 12 months
Buyers by office, new entrants and recompetes in FedSift →
Open solicitations No open solicitations carry this PSC right now.
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What PSC AH51 covers Official definition: GSA PSC Manual (PSC April 2025.xlsx), acquisition.gov/psc-manual. Category: Research and Development.
FY2022 $10.1M
FY2023 $14.6M
FY2024 $14.3M
FY2025 $4.8M
FY2026* $4.7M
FY2027* $625K
USASpending.gov contract obligations by federal fiscal year of the action. * A year that ended under 120 days ago is still filling in.
Who is winning new PSC AH51 work Contractors ranked by obligations on awards that started FY2024–FY2027 to date.
How competitive is PSC AH51? 98.0% of obligations on these awards were competed. 13.6% of competed awards that report offers drew a single offer (n=22). 28.6% went to small businesses. The five largest contractors hold 65.4% across 28 contractors. NAICS codes used on PSC AH51 awards NAICS Industry Share 541715 Research and Development in the Physical, Engineering, and Life Sciences (Except Nanotechnology and Biotechnology) 92.8% 611310 Colleges, Universities, and Professional Schools 4.9% 334513 Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables 0.9% 541620 Environmental Consulting Services 0.5% 813312 Environment, Conservation and Wildlife Organizations 0.5% 541720 Research and Development in the Social Sciences and Humanities 0.3%
Related PSC codes AJ11 General Science and Technology R&D Services; General Science and Technology; Basic Research · R499 Other Professional Services · AJ12 General Science and Technology R&D Services; General Science and Technology; Applied Research · U005 Tuition, Registration, and Membership Fees · F999 Other Environmental Services, Studies, and Analytical Support · AC12 National Defense R&D Services; Department of Defense - Military; Applied Research · R799 Other Management Support Services · U099 Other Education and Training Services
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