Top 57 Contractors in PSC AG: Energy R&D Services, FY2024

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Bwxt Advanced Technologies LLC Top agencies OSD (Office of the Secretary of Defense)	$56,030,498	37.9%	Rank history: #1 in FY2021, not on the FY2022–FY2023 lists and #1 in FY2025; returned.
2	BWX Technologies, Inc. Through Bwxt Advanced Technologies LLC Top agencies OSD (Office of the Secretary of Defense)	$43,392,700	29.3%	Rank history: not on the FY2021 list, #1 in FY2022, #1 in FY2023 and not on the FY2025 list; down 1 since FY2023.
3	Advanced Technology International Top agencies OSD (Office of the Secretary of Defense)	$10,000,000	6.8%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
4	PC Krause & Associates Inc. Top agencies USAF (Department of the Air Force)	$4,369,740	3.0%	Rank history: #5 in FY2021, #8 in FY2022, #5 in FY2023 and not on the FY2025 list; up 1 since FY2023.
5	Diakon Solutions LLC Top agencies DOT (Department of Transportation)	$4,343,089	2.9%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2025; new.
6	CEG Solutions LLC Top agencies OPM (Office of Personnel Management)	$2,803,343	1.9%	Rank history: not on the FY2021–FY2022 lists, #4 in FY2023 and #4 in FY2025; down 2 since FY2023.
7	Sage Geosystems Inc. Top agencies USAF (Department of the Air Force)	$1,900,000	1.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
8	RTX Corporation Through Noresco, LLC Top agencies DOJ (Department of Justice) HHS (Department of Health and Human Services)	$1,893,047	1.3%	Rank history: #10 in FY2021, not on the FY2022 list, #11 in FY2023 and not on the FY2025 list; up 3 since FY2023.
9	State of Rhode Island Through Natural Resources Rhode Island Bureau Of Top agencies DOI (Department of the Interior)	$1,800,000	1.2%	Rank history: not on the FY2021 list, #28 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
10	Electric Power Research Institute Inc. Top agencies DOE (Department of Energy)	$1,738,962	1.2%	Rank history: #12 in FY2021, #20 in FY2022, #6 in FY2023 and #3 in FY2025; down 4 since FY2023.
11	National Strategic Research Institute Top agencies DOE (Department of Energy)	$1,597,320	1.1%	Rank history: #24 in FY2021, #61 in FY2022, #14 in FY2023 and #14 in FY2025; up 3 since FY2023.
12	Ametek Inc. Through Sunpower, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$1,370,592	0.9%	Rank history: #16 in FY2021, #45 in FY2022, #9 in FY2023 and #19 in FY2025; down 3 since FY2023.
13	Huntington Ingalls Industries, Inc. Through HII Mission Technologies Corp Top agencies Navy (Department of the Navy)	$1,313,873	0.9%	Rank history: not on the FY2021 list, #46 in FY2022, not on the FY2023 list and #16 in FY2025; returned.
14	Exelon Corporation Through De Asset Operations, LLC Top agencies Army (Department of the Army)	$1,288,948	0.9%	Rank history: #8 in FY2021, #6 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
15	Techflow, Inc. Top agencies Navy (Department of the Navy)	$1,145,167	0.8%	Rank history: not on the FY2021 list, #2 in FY2022, #7 in FY2023 and not on the FY2025 list; down 8 since FY2023.
16	Cornerstone Research Group Inc Top agencies USAF (Department of the Air Force)	$1,019,529	0.7%	Rank history: not on the FY2021–FY2023 lists and #15 in FY2025; new.
17	X Energy, LLC Top agencies OSD (Office of the Secretary of Defense)	$1,006,439	0.7%	Rank history: #2 in FY2021, #4 in FY2022, #2 in FY2023 and #9 in FY2025; down 15 since FY2023.
18	Energy Systems Group, LLC Top agencies Navy (Department of the Navy)	$964,903	0.7%	Rank history: not on the FY2021–FY2023 lists and #11 in FY2025; new.
19	Berkeley Building Company Top agencies Army (Department of the Army)	$940,020	0.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
20	Noresco, LLC Top agencies HHS (Department of Health and Human Services)	$918,242	0.6%	Rank history: #19 in FY2021, #10 in FY2022, #10 in FY2023 and #6 in FY2025; down 10 since FY2023.
21	Asco Power Services Inc Through Schneider Electric Buildings Americas, Inc. Top agencies GSA (General Services Administration)	$823,589	0.6%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2025; new.
22	Information Systems Laboratories, Inc. Top agencies NRC (Nuclear Regulatory Commission)	$776,000	0.5%	Rank history: not on the FY2021–FY2023 lists and #21 in FY2025; new.
23	Schneider Electric Buildings Americas Inc. Top agencies GSA (General Services Administration)	$647,013	0.4%	Rank history: #28 in FY2021, #32 in FY2022, #16 in FY2023 and not on the FY2025 list; down 7 since FY2023.
24	Sc-B Consulting Incorporated Top agencies Army (Department of the Army) OSD (Office of the Secretary of Defense)	$491,044	0.3%	Rank history: not on the FY2021 list, #53 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
25	Semquest, Inc. Top agencies Army (Department of the Army)	$400,000	0.3%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2025; new.
26	CSA Ocean Sciences Inc. Top agencies DOI (Department of the Interior)	$374,570	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
27	Charles River Analytics, Inc. Top agencies Army (Department of the Army)	$349,982	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
28	De Asset Operations, LLC Top agencies Army (Department of the Army)	$336,960	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
29	Engie Resources LLC Top agencies Smithsonian (Smithsonian Institution)	$314,000	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
30	Ocella, Inc. Top agencies Army (Department of the Army)	$296,220	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
31	Galois, Inc. Top agencies NRC (Nuclear Regulatory Commission)	$294,863	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
32	RPM Innovations Inc Top agencies NASA (National Aeronautics and Space Administration)	$249,975	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
33	Honeywell International Inc. Top agencies Navy (Department of the Navy)	$248,898	0.2%	Rank history: #37 in FY2021, #31 in FY2022, not on the FY2023 list and #22 in FY2025; returned.
34	Analysis and Measurement Services Corporation Top agencies NRC (Nuclear Regulatory Commission)	$219,460	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
35	Energy Research Inc. Top agencies NRC (Nuclear Regulatory Commission)	$209,255	0.1%	Rank history: not on the FY2021–FY2022 lists, #33 in FY2023 and not on the FY2025 list; down 2 since FY2023.
36	Leidos Holdings, Inc. Through Leidos, Inc. Top agencies DOE (Department of Energy)	$199,732	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
37	Numark Associates, Inc. Top agencies NRC (Nuclear Regulatory Commission)	$181,741	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
38	Mark G. Miller, Inc. Top agencies Army (Department of the Army)	$174,900	0.1%	Rank history: #23 in FY2021, #39 in FY2022, #18 in FY2023 and #18 in FY2025; down 20 since FY2023.
39	Physical Sciences Inc. Top agencies NASA (National Aeronautics and Space Administration)	$165,453	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
40	The Mitre Corporation Top agencies NASA (National Aeronautics and Space Administration)	$150,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
41	Global Science & Technology, LLC Top agencies NASA (National Aeronautics and Space Administration)	$144,236	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
42	Agile Ultrasonics Corp Top agencies NASA (National Aeronautics and Space Administration)	$117,865	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
43	Edward Buiel Consulting LLC Top agencies NASA (National Aeronautics and Space Administration)	$115,000	0.1%	Rank history: not on the FY2021–FY2022 lists, #32 in FY2023 and not on the FY2025 list; down 11 since FY2023.
44	University of Illinois Top agencies Army (Department of the Army)	$102,936	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
45	IPD Latin America, LLC Top agencies DOE (Department of Energy)	$56,175	<0.1%	Rank history: not on the FY2021–FY2022 lists, #34 in FY2023 and #31 in FY2025; down 11 since FY2023.
46	Vaisala Inc. Top agencies NASA (National Aeronautics and Space Administration)	$52,188	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
47	Tec-Masters, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$51,284	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
48	Batarow Sensorik GMBH Top agencies NASA (National Aeronautics and Space Administration)	$50,716	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
49	Alion Science and Technology Corporation Through HII Mission Technologies Corp Top agencies Navy (Department of the Navy)	$45,000	<0.1%	Rank history: #29 in FY2021, not on the FY2022 list, #21 in FY2023 and not on the FY2025 list; down 28 since FY2023.
50	Concurrent Technologies Corp Top agencies NASA (National Aeronautics and Space Administration)	$41,995	<0.1%	Rank history: #31 in FY2021, #47 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
51	Situation Awareness Systems LLC Top agencies NASA (National Aeronautics and Space Administration)	$40,000	<0.1%	Rank history: not on the FY2021–FY2023 lists and #34 in FY2025; new.
52	Texas A&M University-Corpus Christi Top agencies DOI (Department of the Interior)	$39,013	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
53	Arco Caribe Architects, PSC Top agencies HHS (Department of Health and Human Services)	$36,474	<0.1%	Rank history: #60 in FY2021, #59 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
54	Environmental Management Support, Inc. Top agencies DOI (Department of the Interior)	$30,470	<0.1%	Rank history: not on the FY2021–FY2022 lists, #38 in FY2023 and not on the FY2025 list; down 16 since FY2023.
55	Holtzman Oil Corp Top agencies Smithsonian (Smithsonian Institution)	$30,000	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
56	Sterling Planet Inc. Top agencies HHS (Department of Health and Human Services)	$14,600	<0.1%	Rank history: not on the FY2021–FY2022 lists, #42 in FY2023 and not on the FY2025 list; down 14 since FY2023.
57	Tetra Tech, Inc. Through RPS Group, Inc. Top agencies DOI (Department of the Interior)	$3,801	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.

How this ranking works

• Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
• Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $148 million obligated before deobligations, so they never pass 100%.
• Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
• Fiscal year 2024 ran Oct 1, 2023 – Sep 30, 2024. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
• Rank changes compare with FY2023. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
• Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2023 takes the color of the rank change beside it.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

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