Top 30 Contractors in PSC B543: Energy Studies, FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Johnson Controls Security Solutions LLC Through Johnson Controls Government Systems, LLC Top agencies USAF (Department of the Air Force) GSA (General Services Administration)	$4,278,065	20.4%	Rank history: #1 in FY2022, #1 in FY2023 and #2 in FY2024; up 4 since FY2020.
2	RTX Corporation Through Noresco, LLC Top agencies DHS (Department of Homeland Security) Treasury (Department of the Treasury)	$2,971,527	14.2%	Rank history: not on the FY2022 list, #5 in FY2023 and #7 in FY2024; up 4 since FY2020.
3	AOC Petroleum Support Services LLC Top agencies DOE (Department of Energy)	$2,829,027	13.5%	Rank history: #2 in FY2022, #4 in FY2023 and #6 in FY2024; up 1 since FY2020.
4	Salas O'brien Federal, LLC Top agencies USAF (Department of the Air Force)	$2,504,564	11.9%	Rank history: #4 in FY2022, #2 in FY2023 and #1 in FY2024; down 1 since FY2020.
5	Exeter Associates, Inc. Top agencies DOE (Department of Energy) Army (Department of the Army)	$1,482,220	7.1%	Rank history: #11 in FY2022, #6 in FY2023 and #3 in FY2024; up 3 since FY2020.
6	Antares Group Incorporated Top agencies DHS (Department of Homeland Security)	$1,340,200	6.4%	Rank history: #6 in FY2022, #7 in FY2023 and #19 in FY2024; up 3 since FY2020.
7	Electric Power Research Institute Inc. Top agencies DOE (Department of Energy)	$765,000	3.6%	Rank history: #12 in FY2022, #10 in FY2023 and #11 in FY2024; new, not ranked in FY2020.
8	Honeywell International Inc. Top agencies DOS (Department of State)	$705,704	3.4%	Rank history: #8 in FY2022, #3 in FY2023 and #5 in FY2024; new, not ranked in FY2020.
9	Enverus, Inc. Top agencies DOE (Department of Energy)	$544,620	2.6%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
10	Brubaker & Associates, Inc. Top agencies Army (Department of the Army)	$485,331	2.3%	Rank history: #17 in FY2022, #11 in FY2023 and #23 in FY2024; unchanged since FY2020.
11	Ameresco Inc. Through Ameresco Federal Solutions, Inc. Top agencies National Gallery of Art	$279,202	1.3%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
12	The Building People LLC Top agencies GSA (General Services Administration)	$249,479	1.2%	Rank history: not on the FY2022–FY2024 lists; unchanged since FY2020.
13	Oil Price Information Service LLC Through IHS Global Inc. Top agencies DOE (Department of Energy)	$217,634	1.0%	Rank history: #24 in FY2022, #16 in FY2023 and not on the FY2024 list; new, not ranked in FY2020.
14	Hydropower Research Institute Top agencies DOI (Department of the Interior)	$200,000	1.0%	Rank history: #13 in FY2022, #12 in FY2023 and #35 in FY2024; unchanged since FY2020.
15	Acme Utility Consultants LLC Top agencies Army (Department of the Army)	$185,270	0.9%	Rank history: not on the FY2022–FY2024 lists; down 8 since FY2020.
16	Ceati International Inc. Top agencies DOI (Department of the Interior)	$179,500	0.9%	Rank history: #26 in FY2022, #20 in FY2023 and #17 in FY2024; down 1 since FY2020.
17	Feditc, LLC Top agencies USAF (Department of the Air Force)	$172,339	0.8%	Rank history: #21 in FY2022, #17 in FY2023 and #12 in FY2024; up 7 since FY2020.
18	DET Norske Veritas Holding (USA), Inc Through DNV Energy USA Inc. Top agencies DOI (Department of the Interior)	$162,745	0.8%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
19	Moffatt & Nichol Top agencies DOI (Department of the Interior)	$149,508	0.7%	Rank history: #28 in FY2022, #13 in FY2023 and not on the FY2024 list; new, not ranked in FY2020.
20	Sc-B Consulting Incorporated Top agencies Army (Department of the Army)	$89,930	0.4%	Rank history: #3 in FY2022 and not on the FY2023–FY2024 lists; new, not ranked in FY2020.
21	Centerpoint Energy, Inc. Through Energy Systems Group, LLC Top agencies USDA (Department of Agriculture)	$89,480	0.4%	Rank history: #30 in FY2022, #23 in FY2023 and not on the FY2024 list; new, not ranked in FY2020.
22	Capital Brand Group LLC Top agencies Navy (Department of the Navy)	$81,090	0.4%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
23	State of California Controllers Office Through University of California Irvine Top agencies DOE (Department of Energy)	$25,000	0.1%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
24	Energy Resources International Inc. Top agencies DOE (Department of Energy)	$24,474	0.1%	Rank history: #25 in FY2022, not on the FY2023 list and #27 in FY2024; down 7 since FY2020.
25	Eaton Corporation Top agencies USAF (Department of the Air Force)	$15,919	0.1%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
26	Cedigaz Top agencies DOE (Department of Energy)	$13,189	0.1%	Rank history: #32 in FY2022, #31 in FY2023 and not on the FY2024 list; up 4 since FY2020.
27	Nuenergen, LLC Top agencies National Gallery of Art	$10,280	<0.1%	Rank history: not on the FY2022 list, #34 in FY2023 and #36 in FY2024; new, not ranked in FY2020.
28	Energy and Environment, LLC Top agencies DHS (Department of Homeland Security)	$7,425	<0.1%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
29	3Degrees Group, Inc. Top agencies DHS (Department of Homeland Security)	$6,679	<0.1%	Rank history: not on the FY2022–FY2024 lists; new, not ranked in FY2020.
30	RBA Group the Through NV5 Consultants, Inc. Top agencies National Gallery of Art	$4,857	<0.1%	Rank history: #27 in FY2022, #28 in FY2023 and not on the FY2024 list; down 3 since FY2020.

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 $21 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 2021 ran Oct 1, 2020 – Sep 30, 2021. 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 FY2020. "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 FY2020 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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