Top 100 Contractors in NAICS 335311: Power, Distribution, and Specialty Transformer Manufacturing, FY2024

Name: Top 100 Contractors in NAICS 335311: Power, Distribution, and Specialty Transformer Manufacturing, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 55% of FY2024 NAICS 335311 contract dollars

Contract obligations: $300,941,432 Net of deobligations, by contracts coded NAICS 335311
Contractors: 756 Parent companies with an obligation
Largest contractor: Tepco Energy Partner, Incorporated $53.9 million, 17.1% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Tepco Energy Partner, Incorporated 2 awardees Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$53,874,807	17.1%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2025; unchanged since FY2023.
2	Jenoptik Aktiengesellschaft Through Vincorion LLC Top agencies Army (Department of the Army)	$25,398,475	8.0%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023 and not on the FY2025 list; up 45 since FY2023.
3	The Chugoku Electric Power Company, Incorporated Top agencies Navy (Department of the Navy)	$23,486,492	7.4%	Rank history: #5 in FY2021, #2 in FY2022, #2 in FY2023 and #3 in FY2025; down 1 since FY2023.
4	Tohoku Electric Power Company Incorporated Top agencies USAF (Department of the Air Force)	$14,667,533	4.6%	Rank history: #7 in FY2021, #3 in FY2022, #3 in FY2023 and #6 in FY2025; down 1 since FY2023.
5	Lithion Battery Inc. Top agencies Navy (Department of the Navy)	$13,434,490	4.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
6	RCT Systems, Inc. Top agencies Navy (Department of the Navy)	$11,388,615	3.6%	Rank history: #2 in FY2021, not on the FY2022–FY2023 lists and #60 in FY2025; returned.
7	Siemens Aktiengesellschaft 2 awardees, including Siemens Industry Inc. Top agencies USAF (Department of the Air Force)	$8,478,121	2.7%	Rank history: #3 in FY2021, #7 in FY2022, #5 in FY2023 and not on the FY2025 list; down 2 since FY2023.
8	Teledyne Technologies Incorporated Through Teledyne Instruments Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$8,150,057	2.6%	Rank history: #22 in FY2021, #6 in FY2022, #9 in FY2023 and not on the FY2025 list; up 1 since FY2023.
9	Scioteq LLC 5 awardees, including Champion Aerospace LLC, Harcosemco LLC and Electromech Technologies LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$7,570,109	2.4%	Rank history: not on the FY2021–FY2023 lists and #59 in FY2025; new.
10	Leonardo S.p.A. 6 awardees, including DRS Naval Power Systems Inc., DRS Network & Imaging Systems LLC and Pivotal Power Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DLA (Defense Logistics Agency)	$7,092,380	2.2%	Rank history: #19 in FY2021, #4 in FY2022, #51 in FY2023 and #5 in FY2025; up 41 since FY2023.
11	Board of Governers State University System of Florida Through Florida State University Top agencies Navy (Department of the Navy)	$7,028,515	2.2%	Rank history: #14 in FY2021, #8 in FY2022, #26 in FY2023 and not on the FY2025 list; up 15 since FY2023.
12	Tti, Inc. Top agencies DLA (Defense Logistics Agency)	$5,421,021	1.7%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2025; new.
13	P.a.r. Products Co Top agencies DLA (Defense Logistics Agency)	$4,915,770	1.6%	Rank history: not on the FY2021 list, #10 in FY2022, not on the FY2023 list and #14 in FY2025; up 101 since FY2023.
14	Asco Power Services Inc Through Schneider Electric Usa, Inc. Top agencies DOT (Department of Transportation)	$4,411,093	1.4%	Rank history: not on the FY2021–FY2023 lists and #13 in FY2025; new.
15	ADI American Distributors, LLC 2 awardees, including Newvac, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$3,921,436	1.2%	Rank history: #57 in FY2021, #29 in FY2022, #52 in FY2023 and not on the FY2025 list; up 37 since FY2023.
16	Phillip Cable Manufacturing, Inc. Top agencies DLA (Defense Logistics Agency)	$3,472,099	1.1%	Rank history: #31 in FY2021, #23 in FY2022, #16 in FY2023 and #10 in FY2025; unchanged since FY2023.
17	Brantner & Associates Inc Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$3,471,884	1.1%	Rank history: not on the FY2021–FY2022 lists, #13 in FY2023 and not on the FY2025 list; down 4 since FY2023.
18	Mavich, LLC Top agencies DLA (Defense Logistics Agency)	$2,439,634	0.8%	Rank history: not on the FY2021–FY2022 lists, #43 in FY2023 and #40 in FY2025; up 25 since FY2023.
19	Golden Star Technology Inc. Top agencies Navy (Department of the Navy)	$2,400,000	0.8%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
20	Quarterwave Corp. Top agencies DOT (Department of Transportation)	$2,233,482	0.7%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2025; new.
21	Carter Machinery Company, Incorporated 2 awardees Top agencies DOS (Department of State)	$2,141,488	0.7%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
22	Ockerman Automation Consulting Inc. Top agencies Army (Department of the Army)	$2,035,284	0.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
23	Hansome Energy Systems Inc. Top agencies Navy (Department of the Navy)	$1,804,962	0.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
24	Pioneer Industries, LLC Top agencies DLA (Defense Logistics Agency)	$1,794,032	0.6%	Rank history: #65 in FY2021, #45 in FY2022, #46 in FY2023 and #44 in FY2025; up 22 since FY2023.
25	Northrop Grumman Corporation 6 awardees, including Northrop Grumman Systems Corporation Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,745,373	0.6%	Rank history: not on the FY2021–FY2022 lists, #35 in FY2023 and not on the FY2025 list; up 10 since FY2023.
26	Aponte Power Services LLC Top agencies Army (Department of the Army)	$1,642,087	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
27	Jo-Kell Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) DHS (Department of Homeland Security)	$1,595,346	0.5%	Rank history: #47 in FY2021, #27 in FY2022, #23 in FY2023 and #20 in FY2025; down 4 since FY2023.
28	Allied Defense Industries, LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,595,125	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
29	Eaton Corporation Top agencies Army (Department of the Army) Navy (Department of the Navy) DOT (Department of Transportation)	$1,547,922	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
30	G & RK Consulting Associates LLC Top agencies DOE (Department of Energy)	$1,534,968	0.5%	Rank history: not on the FY2021 list, #39 in FY2022, #21 in FY2023 and #15 in FY2025; down 9 since FY2023.
31	Ametek SCP Inc. Top agencies DLA (Defense Logistics Agency)	$1,469,661	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
32	L3Harris Technologies, Inc. 6 awardees, including L3Harris Global Communications, Inc., L3 Technologies, Inc. and L3Harris Maritime Power & Energy Solutions, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,427,275	0.5%	Rank history: #24 in FY2021, #15 in FY2022, #30 in FY2023 and #4 in FY2025; down 2 since FY2023.
33	Chester Supply, LLC Top agencies Navy (Department of the Navy)	$1,308,000	0.4%	Rank history: not on the FY2021–FY2022 lists, #33 in FY2023 and not on the FY2025 list; unchanged since FY2023.
34	PAF Electrical, Inc. Top agencies DOI (Department of the Interior)	$1,275,976	0.4%	Rank history: #77 in FY2021, #32 in FY2022, #83 in FY2023 and not on the FY2025 list; up 49 since FY2023.
35	Triman Industries Inc. 2 awardees Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,183,278	0.4%	Rank history: #43 in FY2021, #47 in FY2022, #20 in FY2023 and #31 in FY2025; down 15 since FY2023.
36	L3Harris Maritime Power & Energy Solutions, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,180,752	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
37	Prysmian Cables and Systems Usa, LLC Top agencies DLA (Defense Logistics Agency)	$1,074,749	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
38	Legacy Aircraft Services, Inc. Top agencies DLA (Defense Logistics Agency)	$1,058,141	0.3%	Rank history: not on the FY2021 list, #53 in FY2022, not on the FY2023 list and #26 in FY2025; up 79 since FY2023.
39	Basler Electric Company, LLC Top agencies Navy (Department of the Navy)	$995,027	0.3%	Rank history: not on the FY2021 list, #34 in FY2022, not on the FY2023 list and not on the FY2025 list; up 88 since FY2023.
40	BAE Systems 2 awardees, including BAE Systems Land & Armaments L.P. Top agencies DLA (Defense Logistics Agency)	$994,766	0.3%	Rank history: not on the FY2021–FY2023 lists and #30 in FY2025; new.
41	Oshkosh Corporation 3 awardees, including Oshkosh Defense LLC and JLG Industries, Inc. Top agencies DLA (Defense Logistics Agency)	$984,449	0.3%	Rank history: #70 in FY2021, #58 in FY2022, #58 in FY2023 and #61 in FY2025; up 17 since FY2023.
42	R & D Electronics, Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$980,252	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 359 since FY2023.
43	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$977,736	0.3%	Rank history: #34 in FY2021, #41 in FY2022, #36 in FY2023 and #7 in FY2025; down 7 since FY2023.
44	Statz Corp Top agencies DLA (Defense Logistics Agency)	$975,107	0.3%	Rank history: not on the FY2021–FY2023 lists and #62 in FY2025; up 82 since FY2023.
45	TJR Procurement, LLC Top agencies DLA (Defense Logistics Agency)	$918,651	0.3%	Rank history: not on the FY2021–FY2023 lists and #70 in FY2025; new.
46	Par Defense Industries, LLC Top agencies DLA (Defense Logistics Agency)	$914,989	0.3%	Rank history: #63 in FY2021, #9 in FY2022, #19 in FY2023 and #25 in FY2025; down 27 since FY2023.
47	Rev-Cap Company, Inc. Top agencies DLA (Defense Logistics Agency)	$893,944	0.3%	Rank history: not on the FY2021 list, #11 in FY2022, #28 in FY2023 and #63 in FY2025; down 19 since FY2023.
48	Arctic Slope Regional Corporation 2 awardees, including Asrc Federal Facilities Logistics, LLC Top agencies DLA (Defense Logistics Agency)	$874,900	0.3%	Rank history: not on the FY2021–FY2023 lists and #32 in FY2025; new.
49	Vertiv Corporation Top agencies Army (Department of the Army) USAF (Department of the Air Force) USAGM (US Agency for Global Media)	$855,010	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 86 since FY2023.
50	Herren Associates Inc. Top agencies Navy (Department of the Navy)	$833,990	0.3%	Rank history: not on the FY2021–FY2023 lists and #66 in FY2025; new.
51	J & N Marketing, Inc. Top agencies DOI (Department of the Interior)	$829,420	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
52	Transaero, Inc. Top agencies DLA (Defense Logistics Agency)	$828,449	0.3%	Rank history: not on the FY2021–FY2023 lists and #71 in FY2025; up 251 since FY2023.
53	Bright Lights Usa, Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$797,274	0.3%	Rank history: #25 in FY2021, #67 in FY2022, #34 in FY2023 and not on the FY2025 list; down 19 since FY2023.
54	Massa Products Corporation Top agencies DLA (Defense Logistics Agency)	$793,072	0.3%	Rank history: not on the FY2021–FY2022 lists, #29 in FY2023 and not on the FY2025 list; down 25 since FY2023.
55	Sailplan Maritime, Inc. Top agencies Navy (Department of the Navy)	$782,000	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
56	General Micro Systems, Inc. Top agencies Navy (Department of the Navy)	$755,722	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
57	Gate Industries Top agencies DLA (Defense Logistics Agency)	$749,089	0.2%	Rank history: not on the FY2021–FY2023 lists and #48 in FY2025; up 217 since FY2023.
58	ATI Government Solutions LLC Top agencies DOE (Department of Energy)	$745,721	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
59	C E Niehoff & Co Top agencies DLA (Defense Logistics Agency)	$735,836	0.2%	Rank history: #46 in FY2021, #35 in FY2022, #40 in FY2023 and #58 in FY2025; down 19 since FY2023.
60	Omniverter Inc. Top agencies DOS (Department of State)	$735,335	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
61	Crane Co Through Crane Electronics, Inc. Top agencies Navy (Department of the Navy)	$730,488	0.2%	Rank history: #17 in FY2021, not on the FY2022 list, #24 in FY2023 and not on the FY2025 list; down 37 since FY2023.
62	The L.c.doane Company Top agencies DLA (Defense Logistics Agency)	$723,974	0.2%	Rank history: #27 in FY2021, #73 in FY2022, #38 in FY2023 and #72 in FY2025; down 24 since FY2023.
63	Coil Winding Specialist, Inc. Top agencies DOI (Department of the Interior) USAF (Department of the Air Force) Army (Department of the Army)	$721,375	0.2%	Rank history: #38 in FY2021, #21 in FY2022, #22 in FY2023 and #43 in FY2025; down 41 since FY2023.
64	Newvac LLC Top agencies DLA (Defense Logistics Agency)	$665,725	0.2%	Rank history: not on the FY2021–FY2023 lists and #28 in FY2025; new.
65	Elemco Services, Inc. Top agencies VA (Department of Veterans Affairs)	$663,000	0.2%	Rank history: #32 in FY2021, not on the FY2022 list, #44 in FY2023 and #64 in FY2025; down 21 since FY2023.
66	Aantilia LLC Top agencies Navy (Department of the Navy)	$649,302	0.2%	Rank history: not on the FY2021 list, #62 in FY2022, not on the FY2023 list and not on the FY2025 list; up 99 since FY2023.
67	The Boeing Company 3 awardees, including Boeing Distribution, Inc. and Insitu, Inc. Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$602,637	0.2%	Rank history: not on the FY2021 list, #84 in FY2022, not on the FY2023 list and #69 in FY2025; returned.
68	Data Connect Enterprise Inc. Top agencies Navy (Department of the Navy)	$535,500	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
69	Energy By Native American Design Corp Top agencies Army (Department of the Army)	$534,100	0.2%	Rank history: not on the FY2021 list, #69 in FY2022, not on the FY2023 list and not on the FY2025 list; up 286 since FY2023.
70	2Lyons Aerospace LLC Top agencies DLA (Defense Logistics Agency)	$512,948	0.2%	Rank history: not on the FY2021–FY2023 lists and #24 in FY2025; up 231 since FY2023.
71	Wright Source Inc. Top agencies DLA (Defense Logistics Agency)	$511,946	0.2%	Rank history: #85 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 99 since FY2023.
72	Richard Manufacturing Company Top agencies DLA (Defense Logistics Agency)	$510,554	0.2%	Rank history: not on the FY2021 list, #81 in FY2022, #63 in FY2023 and #33 in FY2025; down 9 since FY2023.
73	Projects Unlimited Inc. Top agencies Navy (Department of the Navy)	$509,390	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
74	Phoenix Trading Inc. Top agencies DLA (Defense Logistics Agency)	$497,731	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
75	General Electric Company 2 awardees, including GE Grid Solutions LLC Top agencies Army (Department of the Army)	$490,372	0.2%	Rank history: #20 in FY2021, #65 in FY2022, not on the FY2023 list and not on the FY2025 list; up 69 since FY2023.
76	Suncore Distribution LLC Top agencies Navy (Department of the Navy)	$482,089	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
77	Ensign Power Systems, Inc. Top agencies Army (Department of the Army)	$480,802	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
78	YKC Distribution, LLC Top agencies DLA (Defense Logistics Agency)	$472,762	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
79	Northern Defense Industries, LLC Top agencies Navy (Department of the Navy)	$465,813	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
80	ECI Defense Group, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$451,927	0.1%	Rank history: #41 in FY2021, #51 in FY2022, #60 in FY2023 and not on the FY2025 list; down 20 since FY2023.
81	MDF Technologies Inc. Top agencies DHS (Department of Homeland Security) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$438,089	0.1%	Rank history: #30 in FY2021, #49 in FY2022, #49 in FY2023 and not on the FY2025 list; down 32 since FY2023.
82	H C Merchandisers, Inc. Top agencies DLA (Defense Logistics Agency)	$434,743	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 112 since FY2023.
83	Aviation Ground Equipment Corp Top agencies DHS (Department of Homeland Security) Army (Department of the Army) DLA (Defense Logistics Agency)	$414,218	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 78 since FY2023.
84	Mary Helen Parkey Top agencies USAF (Department of the Air Force) Army (Department of the Army) DOI (Department of the Interior)	$406,660	0.1%	Rank history: #54 in FY2021, #100 in FY2022, #31 in FY2023 and #97 in FY2025; down 53 since FY2023.
85	Aerocontrolex Group, Inc. Top agencies USAF (Department of the Air Force)	$401,140	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
86	U.s. Pioneer, L.L.C. Top agencies DLA (Defense Logistics Agency)	$394,339	0.1%	Rank history: not on the FY2021 list, #72 in FY2022, not on the FY2023 list and #35 in FY2025; up 174 since FY2023.
87	Woodard Electric Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$390,866	0.1%	Rank history: not on the FY2021 list, #66 in FY2022, not on the FY2023 list and #54 in FY2025; up 73 since FY2023.
88	Jgils, LLC Top agencies DLA (Defense Logistics Agency)	$381,896	0.1%	Rank history: not on the FY2021–FY2023 lists and #79 in FY2025; up 87 since FY2023.
89	S I T Corporation Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$380,335	0.1%	Rank history: not on the FY2021 list, #61 in FY2022, not on the FY2023 list and #92 in FY2025; up 97 since FY2023.
90	Allen Enterprises, Inc. Top agencies USAF (Department of the Air Force)	$364,851	0.1%	Rank history: not on the FY2021–FY2022 lists, #91 in FY2023 and #93 in FY2025; up 1 since FY2023.
91	Space Vector Corporation Top agencies USAF (Department of the Air Force)	$345,338	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
92	Asrc Federal Facilities Logistics LLC Top agencies DLA (Defense Logistics Agency)	$341,307	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
93	Tesla Industries Inc. Top agencies DLA (Defense Logistics Agency)	$327,134	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 198 since FY2023.
94	FBC Enterprises LLC Top agencies DLA (Defense Logistics Agency)	$325,612	0.1%	Rank history: not on the FY2021–FY2023 lists and #84 in FY2025; up 59 since FY2023.
95	Peak Electric, Inc. Top agencies DOE (Department of Energy) Treasury (Department of the Treasury)	$324,170	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
96	Janels Industries Inc. Top agencies DLA (Defense Logistics Agency)	$317,925	0.1%	Rank history: not on the FY2021–FY2023 lists and #68 in FY2025; up 107 since FY2023.
97	Hoosier Industrial Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$314,412	0.1%	Rank history: not on the FY2021 list, #93 in FY2022, #97 in FY2023 and not on the FY2025 list; unchanged since FY2023.
98	Lextm3 Systems, LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$313,826	0.1%	Rank history: not on the FY2021–FY2022 lists, #87 in FY2023 and #29 in FY2025; down 11 since FY2023.
99	Leidos Holdings, Inc. Through Leidos, Inc. Top agencies DLA (Defense Logistics Agency)	$302,820	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 124 since FY2023.
100	R & M Government Services Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$302,531	0.1%	Rank history: #67 in FY2021, not on the FY2022 list, #64 in FY2023 and not on the FY2025 list; down 36 since FY2023.

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100 of 756 contractors listed here. See the rest on GovTribe.

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 $316 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.

Quick answers

Who were the top 10 NAICS 335311 contractors in FY2024?

1. Tepco Energy Partner, Incorporated ($53.9M), 2. Jenoptik Aktiengesellschaft ($25.4M), 3. The Chugoku Electric Power Company, Incorporated ($23.5M), 4. Tohoku Electric Power Company Incorporated ($14.7M), 5. Lithion Battery Inc. ($13.4M), 6. RCT Systems, Inc. ($11.4M), 7. Siemens Aktiengesellschaft ($8.48M), 8. Teledyne Technologies Incorporated ($8.15M), 9. Scioteq LLC ($7.57M), 10. Leonardo S.p.A. ($7.09M).

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