Top 43 Contractors in PSC AG: Energy R&D Services, FY2023

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	BWX Technologies, Inc. 2 awardees, including Bwxt Advanced Technologies LLC Top agencies OSD (Office of the Secretary of Defense)	$103,624,628	61.3%	Rank history: not on the FY2021 list, #1 in FY2022, #2 in FY2024 and not on the FY2025 list; unchanged since FY2022.
2	X Energy, LLC Top agencies OSD (Office of the Secretary of Defense)	$17,493,552	10.4%	Rank history: #2 in FY2021, #4 in FY2022, #17 in FY2024 and #9 in FY2025; up 2 since FY2022.
3	Analytic Services Inc. Through Advanced Technology International Top agencies OSD (Office of the Secretary of Defense)	$15,525,000	9.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
4	CEG Solutions LLC Top agencies OPM (Office of Personnel Management)	$4,558,511	2.7%	Rank history: not on the FY2021–FY2022 lists, #6 in FY2024 and #4 in FY2025; new.
5	PC Krause & Associates Inc. Top agencies USAF (Department of the Air Force)	$4,378,782	2.6%	Rank history: #5 in FY2021, #8 in FY2022, #4 in FY2024 and not on the FY2025 list; up 3 since FY2022.
6	Electric Power Research Institute Inc. Top agencies DOE (Department of Energy) DOI (Department of the Interior)	$2,963,956	1.8%	Rank history: #12 in FY2021, #20 in FY2022, #10 in FY2024 and #3 in FY2025; up 14 since FY2022.
7	Techflow, Inc. Top agencies USAF (Department of the Air Force)	$2,813,962	1.7%	Rank history: not on the FY2021 list, #2 in FY2022, #15 in FY2024 and not on the FY2025 list; down 5 since FY2022.
8	Coastal Frontiers Corporation Top agencies DOI (Department of the Interior)	$1,618,618	1.0%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #13 in FY2025; new.
9	Ametek Inc. Through Sunpower, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$1,548,745	0.9%	Rank history: #16 in FY2021, #45 in FY2022, #12 in FY2024 and #19 in FY2025; up 36 since FY2022.
10	Noresco, LLC Top agencies DOJ (Department of Justice) HHS (Department of Health and Human Services)	$1,371,002	0.8%	Rank history: #19 in FY2021, #10 in FY2022, #20 in FY2024 and #6 in FY2025; unchanged since FY2022.
11	RTX Corporation Through Noresco, LLC Top agencies HHS (Department of Health and Human Services)	$1,320,584	0.8%	Rank history: #10 in FY2021, not on the FY2022 list, #8 in FY2024 and not on the FY2025 list; returned.
12	University of Houston System Top agencies DOI (Department of the Interior)	$960,493	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
13	Centerpoint Energy, Inc. Through Energy Systems Group, LLC Top agencies Navy (Department of the Navy)	$940,021	0.6%	Rank history: #13 in FY2021, #25 in FY2022 and not on the FY2024–FY2025 lists; up 12 since FY2022.
14	National Strategic Research Institute Top agencies DOE (Department of Energy)	$800,000	0.5%	Rank history: #24 in FY2021, #61 in FY2022, #11 in FY2024 and #14 in FY2025; up 47 since FY2022.
15	State of California Controllers Office Through The Regents of the University of California Top agencies DOI (Department of the Interior)	$627,837	0.4%	Rank history: #18 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
16	Schneider Electric Buildings Americas Inc. Top agencies GSA (General Services Administration)	$588,367	0.3%	Rank history: #28 in FY2021, #32 in FY2022, #23 in FY2024 and not on the FY2025 list; up 16 since FY2022.
17	Information Systems Laboratories Inc. Top agencies NRC (Nuclear Regulatory Commission)	$516,287	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
18	Mark G. Miller, Inc. Top agencies Army (Department of the Army)	$459,616	0.3%	Rank history: #23 in FY2021, #39 in FY2022, #38 in FY2024 and #18 in FY2025; up 21 since FY2022.
19	The Pennsylvania State University Top agencies NRC (Nuclear Regulatory Commission)	$450,000	0.3%	Rank history: #22 in FY2021, #37 in FY2022 and not on the FY2024–FY2025 lists; up 18 since FY2022.
20	Jacobs Engineering Group Inc. Through The Keyw Corporation Top agencies Navy (Department of the Navy)	$431,000	0.3%	Rank history: #3 in FY2021, #5 in FY2022 and not on the FY2024–FY2025 lists; down 15 since FY2022.
21	Alion Science and Technology Corporation Through HII Mission Technologies Corp Top agencies Navy (Department of the Navy)	$405,622	0.2%	Rank history: #29 in FY2021, not on the FY2022 list, #49 in FY2024 and not on the FY2025 list; returned.
22	Aptim Federal Services LLC Top agencies Army (Department of the Army)	$350,834	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
23	Biomass Energy Systems Inc. Top agencies Army (Department of the Army)	$344,780	0.2%	Rank history: #25 in FY2021, #24 in FY2022, not on the FY2024 list and #25 in FY2025; up 1 since FY2022.
24	Regents Tennessee Board of Through East Tennessee State University Top agencies Army (Department of the Army)	$301,127	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
25	Coastal Drilling East LLC Top agencies HHS (Department of Health and Human Services)	$249,749	0.1%	Rank history: #47 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
26	Versar Inc. 2 awardees Top agencies DOI (Department of the Interior)	$219,035	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
27	Wood Environment & Infrastructure Solutions Inc. Through WSP USA Environment & Infrastructure Inc. Top agencies DOI (Department of the Interior)	$163,905	0.1%	Rank history: not on the FY2021 list, #40 in FY2022 and not on the FY2024–FY2025 lists; up 13 since FY2022.
28	Scale Measurement LLC Top agencies DOI (Department of the Interior)	$140,557	0.1%	Rank history: #15 in FY2021, #22 in FY2022 and not on the FY2024–FY2025 lists; down 6 since FY2022.
29	Oxeon Energy LLC Top agencies NASA (National Aeronautics and Space Administration)	$99,706	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
30	RPS Group Inc. Top agencies DOI (Department of the Interior)	$78,611	<0.1%	Rank history: #53 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
31	Nexight Group LLC Top agencies NASA (National Aeronautics and Space Administration)	$71,400	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
32	Edward Buiel Consulting LLC Top agencies NASA (National Aeronautics and Space Administration)	$69,000	<0.1%	Rank history: not on the FY2021–FY2022 lists, #43 in FY2024 and not on the FY2025 list; new.
33	Energy Research Inc. Top agencies NRC (Nuclear Regulatory Commission)	$57,934	<0.1%	Rank history: not on the FY2021–FY2022 lists, #35 in FY2024 and not on the FY2025 list; new.
34	IPD Latin America, LLC Top agencies DOE (Department of Energy)	$53,500	<0.1%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2024 and #31 in FY2025; new.
35	Battelle Memorial Institute Top agencies DOI (Department of the Interior)	$51,809	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
36	Nuka Research and Planning Group, LLC Top agencies DOI (Department of the Interior)	$47,659	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
37	Scientific Lightning Solutions LLC Top agencies NASA (National Aeronautics and Space Administration)	$43,453	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
38	Environmental Management Support, Inc. Top agencies DOI (Department of the Interior)	$38,887	<0.1%	Rank history: not on the FY2021–FY2022 lists, #54 in FY2024 and not on the FY2025 list; new.
39	Luminex Corp Top agencies VA (Department of Veterans Affairs)	$35,264	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
40	The Texas A&M University System Through Texas A&M University-Corpus Christi Top agencies DOI (Department of the Interior)	$25,000	<0.1%	Rank history: not on the FY2021 list, #33 in FY2022 and not on the FY2024–FY2025 lists; down 7 since FY2022.
41	Illinois Tool Works Inc. Top agencies NASA (National Aeronautics and Space Administration)	$17,660	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
42	Sterling Planet Inc. Top agencies HHS (Department of Health and Human Services)	$14,600	<0.1%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2024 and not on the FY2025 list; new.
43	S.l. Ross Environmental Research Limited Top agencies DOI (Department of the Interior)	$14,460	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; 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 $169 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 2023 ran Oct 1, 2022 – Sep 30, 2023. 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 FY2022. "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 FY2022 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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