Top 36 Contractors in PSC B543: Energy Studies, FY2024

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Salas O'brien Federal, LLC Top agencies USAF (Department of the Air Force)	$3,045,422	13.7%	Rank history: #4 in FY2021, #4 in FY2022 and #2 in FY2023; up 1 since FY2023.
2	Johnson Controls Security Solutions LLC Through Johnson Controls Government Systems, LLC Top agencies USAF (Department of the Air Force)	$2,992,883	13.5%	Rank history: #1 in FY2021, #1 in FY2022 and #1 in FY2023; down 1 since FY2023.
3	Exeter Associates, Inc. Top agencies DOE (Department of Energy) Army (Department of the Army)	$1,926,889	8.7%	Rank history: #5 in FY2021, #11 in FY2022 and #6 in FY2023; up 3 since FY2023.
4	KFI Engineers, PC Top agencies GSA (General Services Administration)	$1,779,099	8.0%	Rank history: not on the FY2021 list, #9 in FY2022 and #8 in FY2023; up 4 since FY2023.
5	Honeywell International Inc. 2 awardees Top agencies NASA (National Aeronautics and Space Administration) DOS (Department of State)	$1,744,250	7.9%	Rank history: #8 in FY2021, #8 in FY2022 and #3 in FY2023; down 2 since FY2023.
6	AOC Petroleum Support Services LLC Top agencies DOE (Department of Energy)	$1,698,941	7.7%	Rank history: #3 in FY2021, #2 in FY2022 and #4 in FY2023; down 2 since FY2023.
7	RTX Corporation Through Noresco, LLC Top agencies Treasury (Department of the Treasury)	$1,558,261	7.0%	Rank history: #2 in FY2021, not on the FY2022 list and #5 in FY2023; down 2 since FY2023.
8	Green Powered Technology LLC Top agencies DHS (Department of Homeland Security)	$1,434,582	6.5%	Rank history: not on the FY2021–FY2023 lists; new.
9	Johnson Controls Government Systems, LLC Top agencies GSA (General Services Administration)	$1,206,748	5.4%	Rank history: not on the FY2021 list, #14 in FY2022 and not on the FY2023 list; returned.
10	Cti-Oes JV Top agencies VA (Department of Veterans Affairs)	$648,062	2.9%	Rank history: not on the FY2021–FY2022 lists and #9 in FY2023; down 1 since FY2023.
11	Electric Power Research Institute Inc. Top agencies DOE (Department of Energy)	$554,646	2.5%	Rank history: #7 in FY2021, #12 in FY2022 and #10 in FY2023; down 1 since FY2023.
12	Feditc, LLC Top agencies USAF (Department of the Air Force)	$385,088	1.7%	Rank history: #17 in FY2021, #21 in FY2022 and #17 in FY2023; up 5 since FY2023.
13	Carnegie-Mellon University Top agencies GSA (General Services Administration)	$264,956	1.2%	Rank history: not on the FY2021 list, #15 in FY2022 and #14 in FY2023; up 1 since FY2023.
14	IHS Global Inc Top agencies DOE (Department of Energy)	$250,042	1.1%	Rank history: not on the FY2021–FY2023 lists; new.
15	Siemens Industry Inc. Top agencies USDA (Department of Agriculture)	$200,000	0.9%	Rank history: not on the FY2021–FY2023 lists; new.
16	Dow Mountain LLC Top agencies DOL (Department of Labor)	$180,431	0.8%	Rank history: not on the FY2021–FY2023 lists; new.
17	Ceati International Inc. Top agencies DOI (Department of the Interior)	$164,014	0.7%	Rank history: #16 in FY2021, #26 in FY2022 and #20 in FY2023; up 3 since FY2023.
18	Fesharaki Associates Consulting & Technical Services Inc. Top agencies DOE (Department of Energy)	$155,022	0.7%	Rank history: not on the FY2021–FY2022 lists and #21 in FY2023; up 3 since FY2023.
19	Antares Group Incorporated Top agencies DHS (Department of Homeland Security)	$153,200	0.7%	Rank history: #6 in FY2021, #6 in FY2022 and #7 in FY2023; down 12 since FY2023.
20	DAV Energy Solutions, Inc. Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$151,127	0.7%	Rank history: not on the FY2021–FY2022 lists and #32 in FY2023; up 12 since FY2023.
21	YOY Inc. Top agencies USAF (Department of the Air Force)	$148,026	0.7%	Rank history: not on the FY2021–FY2023 lists; new.
22	Citrine LLC Top agencies SSA (Social Security Administration)	$121,585	0.5%	Rank history: not on the FY2021–FY2023 lists; new.
23	Brubaker & Associates, Inc. Top agencies Army (Department of the Army)	$106,358	0.5%	Rank history: #10 in FY2021, #17 in FY2022 and #11 in FY2023; down 12 since FY2023.
24	The Leland Stanford Junior University Top agencies DOE (Department of Energy)	$100,000	0.5%	Rank history: not on the FY2021 list, #29 in FY2022 and #22 in FY2023; down 2 since FY2023.
25	Vision Building Energy Efficiency LLC Top agencies DOE (Department of Energy)	$99,813	0.5%	Rank history: not on the FY2021–FY2023 lists; new.
26	Chinook Systems Inc. Top agencies Army (Department of the Army)	$86,839	0.4%	Rank history: not on the FY2021–FY2023 lists; new.
27	Energy Resources International Inc. Top agencies DOE (Department of Energy)	$66,065	0.3%	Rank history: #24 in FY2021, #25 in FY2022 and not on the FY2023 list; returned.
28	Greenecosavers LLC Top agencies Navy (Department of the Navy)	$59,243	0.3%	Rank history: not on the FY2021–FY2023 lists; new.
29	Basson Trading LLC Top agencies Army (Department of the Army)	$43,890	0.2%	Rank history: not on the FY2021–FY2023 lists; new.
30	Facility Dynamics Engineering Corporation Top agencies Army (Department of the Army)	$39,932	0.2%	Rank history: not on the FY2021 list, #16 in FY2022 and not on the FY2023 list; returned.
31	Commissioning & Green Building Solutions, Inc. Top agencies USDA (Department of Agriculture)	$33,484	0.2%	Rank history: not on the FY2021–FY2023 lists; new.
32	Muscogee Asset Protection, LLC Top agencies USAF (Department of the Air Force)	$31,668	0.1%	Rank history: not on the FY2021–FY2023 lists; new.
33	Panorama Environmental Inc Top agencies DOI (Department of the Interior)	$25,563	0.1%	Rank history: not on the FY2021–FY2023 lists; new.
34	Rd3, Inc. Top agencies USDA (Department of Agriculture)	$18,334	0.1%	Rank history: not on the FY2021–FY2022 lists and #33 in FY2023; down 1 since FY2023.
35	Hydropower Research Institute Top agencies DOI (Department of the Interior)	$17,000	0.1%	Rank history: #14 in FY2021, #13 in FY2022 and #12 in FY2023; down 23 since FY2023.
36	Nuenergen, LLC Top agencies National Gallery of Art	$10,280	<0.1%	Rank history: #27 in FY2021, not on the FY2022 list and #34 in FY2023; down 2 since FY2023.

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 $22.2 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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