Top 100 Contractors in PSC Z1NZ: Maintenance of Other Utilities, FY2021

Name: Top 100 Contractors in PSC Z1NZ: Maintenance of Other Utilities, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 71% of FY2021 PSC Z1NZ contract dollars

Contract obligations: $53,387,383 Net of deobligations, by contracts coded PSC Z1NZ
Contractors: 119 Parent companies with an obligation
Largest contractor: American Electric Power Company, Inc. $12.9 million, 23.4% 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	American Electric Power Company, Inc. Through Public Service Company of Oklahoma Top agencies Army (Department of the Army)	$12,875,000	23.4%	Rank history: not on the FY2022–FY2024 lists and #21 in FY2025; new, not ranked in FY2020.
2	Innovative Support Solutions, Inc. Top agencies VA (Department of Veterans Affairs)	$5,798,000	10.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
3	Fuji Construction Co.,Ltd. Top agencies Navy (Department of the Navy)	$4,864,639	8.9%	Rank history: #8 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
4	Swan Contracting LLC Top agencies USAF (Department of the Air Force)	$3,826,461	7.0%	Rank history: #63 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
5	American Vet Industries, LLC Top agencies VA (Department of Veterans Affairs)	$2,869,007	5.2%	Rank history: not on the FY2022 list, #30 in FY2023, #33 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
6	American Engineering Corporation Top agencies Navy (Department of the Navy)	$2,570,981	4.7%	Rank history: #51 in FY2022, #20 in FY2023 and not on the FY2024–FY2025 lists; up 34 since FY2020.
7	Exelon Corporation Through Potomac Electric Power Co Top agencies NASA (National Aeronautics and Space Administration)	$1,809,105	3.3%	Rank history: #3 in FY2022, not on the FY2023 list, #2 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
8	JX Holdings Inc. Through Nippo Corporation Top agencies USAF (Department of the Air Force)	$1,621,701	3.0%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
9	QA & SW Construction LLC Top agencies Navy (Department of the Navy)	$1,595,709	2.9%	Rank history: #44 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
10	Valdez WA Patriot Joint Venture Top agencies Navy (Department of the Navy)	$987,383	1.8%	Rank history: #10 in FY2022, not on the FY2023 list, #8 in FY2024 and #30 in FY2025; new, not ranked in FY2020.
11	Paradigm Mechanical Corp. Top agencies Navy (Department of the Navy)	$777,877	1.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
12	Flatwater Solutions Company Top agencies USAF (Department of the Air Force)	$710,452	1.3%	Rank history: #12 in FY2022, #22 in FY2023, #12 in FY2024 and not on the FY2025 list; up 21 since FY2020.
13	Evoqua Water Technologies LLC 2 awardees Top agencies Navy (Department of the Navy)	$645,360	1.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
14	Siemens Aktiengesellschaft 2 awardees, including Siemens Industry Inc. and Siemens Government Technologies Inc. Top agencies DOJ (Department of Justice) DOS (Department of State) USDA (Department of Agriculture)	$584,814	1.1%	Rank history: #33 in FY2022, #24 in FY2023 and not on the FY2024–FY2025 lists; up 20 since FY2020.
15	Toshiba Corporation Through Toshiba Infrastructure Systems & Solutions Corporation Top agencies Navy (Department of the Navy)	$578,252	1.1%	Rank history: #17 in FY2022, #23 in FY2023, #4 in FY2024 and not on the FY2025 list; unchanged since FY2020.
16	Jett's Specialty Contracting, LLC Top agencies VA (Department of Veterans Affairs)	$569,947	1.0%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
17	Hampton Roads Mechanical of Virginia, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$556,497	1.0%	Rank history: #20 in FY2022, #27 in FY2023, not on the FY2024 list and #48 in FY2025; down 10 since FY2020.
18	Natives of Kodiak, Incorporated Through Koman Construction, LLC Top agencies Navy (Department of the Navy)	$465,439	0.8%	Rank history: #13 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
19	Chugach Alaska Corporation 2 awardees, including Defense Base Services, LLC and Chugach Consolidated Solutions, LLC Top agencies Navy (Department of the Navy)	$458,463	0.8%	Rank history: #15 in FY2022, #16 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
20	Pumping Services, Inc. Top agencies Navy (Department of the Navy)	$434,202	0.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
21	Advanced Construction Services Inc. Top agencies USAF (Department of the Air Force)	$420,447	0.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
22	Argus CJW JV LLC Top agencies Navy (Department of the Navy)	$414,035	0.8%	Rank history: not on the FY2022–FY2025 lists; down 17 since FY2020.
23	Mountain Consulting, Inc. Top agencies USAF (Department of the Air Force)	$347,714	0.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
24	Secsol Inc. Top agencies VA (Department of Veterans Affairs)	$345,420	0.6%	Rank history: #31 in FY2022, #34 in FY2023 and not on the FY2024–FY2025 lists; up 6 since FY2020.
25	KJS MP Joint Venture LLC Top agencies Navy (Department of the Navy)	$331,961	0.6%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
26	J & A Electric, Inc. Top agencies Army (Department of the Army)	$330,296	0.6%	Rank history: #77 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
27	B & D Electric, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$328,004	0.6%	Rank history: #47 in FY2022, not on the FY2023 list, #53 in FY2024 and not on the FY2025 list; down 25 since FY2020.
28	D7, LLC Top agencies Army (Department of the Army)	$284,276	0.5%	Rank history: #35 in FY2022, #3 in FY2023, #19 in FY2024 and not on the FY2025 list; up 3 since FY2020.
29	Asturian Group, Inc. Top agencies Navy (Department of the Navy)	$259,636	0.5%	Rank history: not on the FY2022–FY2025 lists; down 1 since FY2020.
30	Pyramid Contracting LLC Top agencies Navy (Department of the Navy)	$258,004	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
31	Otis Elevator Company Top agencies USAF (Department of the Air Force)	$253,585	0.5%	Rank history: #38 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
32	Jacobs Engineering Group Inc. Through Amentum Technology, Inc. Top agencies Navy (Department of the Navy)	$233,009	0.4%	Rank history: not on the FY2022 list, #11 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
33	Desbuild Incorporated Top agencies Navy (Department of the Navy)	$228,667	0.4%	Rank history: not on the FY2022–FY2025 lists; down 30 since FY2020.
34	Meadows Cmpg, Inc. Top agencies Navy (Department of the Navy)	$223,230	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
35	Dunbar Mechanical Contractors, LLC Top agencies VA (Department of Veterans Affairs)	$222,015	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
36	Pittman Consulting Group, LLC Top agencies Army (Department of the Army)	$209,950	0.4%	Rank history: #45 in FY2022, #42 in FY2023, #42 in FY2024 and #18 in FY2025; up 1 since FY2020.
37	Barnhart Crane and Rigging Co. Through Barnhart Northeast, Inc. Top agencies Navy (Department of the Navy)	$200,640	0.4%	Rank history: not on the FY2022 list, #54 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
38	CCI Facility Support Services, LLC Top agencies DHS (Department of Homeland Security)	$195,592	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
39	Refcon Services Inc. Top agencies Navy (Department of the Navy)	$192,439	0.4%	Rank history: #39 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
40	Mac Gc-Electric, Inc. Top agencies Navy (Department of the Navy)	$182,525	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
41	Freedom Contracting Group, LLC Top agencies VA (Department of Veterans Affairs)	$181,727	0.3%	Rank history: #41 in FY2022, #60 in FY2023 and not on the FY2024–FY2025 lists; down 37 since FY2020.
42	Eagle Fire Inc. Top agencies Navy (Department of the Navy)	$137,544	0.3%	Rank history: #27 in FY2022, #68 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2020.
43	Afognak Native Corporation Through Alutiiq Pacific, LLC Top agencies Army (Department of the Army)	$130,488	0.2%	Rank history: not on the FY2022–FY2025 lists; down 18 since FY2020.
44	Timco Blasting & Coatings, Inc. Top agencies Army (Department of the Army)	$129,862	0.2%	Rank history: not on the FY2022 list, #99 in FY2023 and not on the FY2024–FY2025 lists; down 36 since FY2020.
45	Ezust Kameleon Kereskedelmi Es Szolgaltato Korlatolt Felelossegu Tarsasag Top agencies DOS (Department of State)	$118,192	0.2%	Rank history: #85 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
46	Henron Electrical Resources LLC Top agencies Army (Department of the Army)	$115,511	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
47	Wadsworth Service, Inc. Top agencies DHS (Department of Homeland Security)	$105,500	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
48	Intergrated Power & Control Solutions Ltd Top agencies DOS (Department of State)	$100,453	0.2%	Rank history: #54 in FY2022, #56 in FY2023, #43 in FY2024 and not on the FY2025 list; up 6 since FY2020.
49	Mjm-Acepex JV Top agencies Navy (Department of the Navy)	$96,584	0.2%	Rank history: not on the FY2022–FY2025 lists; down 37 since FY2020.
50	C Emery Nelson Inc. Top agencies DHS (Department of Homeland Security)	$89,910	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
51	Savimag SRL Through C.e.m.e.s. - S.P.A. Top agencies Army (Department of the Army)	$88,605	0.2%	Rank history: #57 in FY2022 and not on the FY2023–FY2025 lists; up 5 since FY2020.
52	Olympic Electric Co Inc. Top agencies DOI (Department of the Interior)	$80,709	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
53	Dol-Man Electric, Inc. Top agencies Army (Department of the Army)	$76,115	0.1%	Rank history: not on the FY2022–FY2025 lists; up 12 since FY2020.
54	Tidewater, Inc. Top agencies DOS (Department of State)	$75,820	0.1%	Rank history: not on the FY2022–FY2023 lists, #52 in FY2024 and not on the FY2025 list; up 48 since FY2020.
55	Strategic Consulting Alliances, LLC Top agencies Army (Department of the Army)	$72,214	0.1%	Rank history: #82 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
56	Professionals HIR LLC Top agencies Navy (Department of the Navy)	$67,340	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
57	Anderson Place Construction LLC Top agencies Navy (Department of the Navy)	$66,786	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
58	Daeruk Construction Co., Ltd. Top agencies Navy (Department of the Navy)	$59,399	0.1%	Rank history: #59 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
59	Jordan Elevators Overseas Co L TD Top agencies DOS (Department of State)	$57,915	0.1%	Rank history: #65 in FY2022, #67 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
60	Fiorini Impianti Group SRL Top agencies Army (Department of the Army)	$54,355	0.1%	Rank history: #67 in FY2022, #71 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
61	Anchor Pacific Resource Management, Inc. Top agencies Army (Department of the Army)	$51,425	0.1%	Rank history: #52 in FY2022, #48 in FY2023, #30 in FY2024 and not on the FY2025 list; down 11 since FY2020.
62	Neal's Construction, LLC Top agencies Navy (Department of the Navy)	$50,860	0.1%	Rank history: not on the FY2022–FY2025 lists; up 17 since FY2020.
63	Sagelec Top agencies Army (Department of the Army)	$49,431	0.1%	Rank history: not on the FY2022–FY2025 lists; up 3 since FY2020.
64	TECH City S.A. De C.V. Top agencies DOS (Department of State)	$49,350	0.1%	Rank history: #69 in FY2022, #72 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
65	Rand Enterprises, Inc. Top agencies Navy (Department of the Navy)	$49,051	0.1%	Rank history: not on the FY2022–FY2025 lists; down 20 since FY2020.
66	At&T Inc. Through At&T Enterprises, LLC Top agencies DOJ (Department of Justice)	$47,787	0.1%	Rank history: #68 in FY2022 and not on the FY2023–FY2025 lists; up 48 since FY2020.
67	Schindler Holding AG Through Schindler Ltd Top agencies DOS (Department of State)	$44,918	0.1%	Rank history: #71 in FY2022, #94 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
68	Environmental Source Samplers, Inc. Top agencies DOS (Department of State)	$44,575	0.1%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
69	J & S Power Solutions Inc. Top agencies VA (Department of Veterans Affairs)	$41,019	0.1%	Rank history: not on the FY2022–FY2025 lists; up 28 since FY2020.
70	ABB Inc. Top agencies DOJ (Department of Justice)	$39,900	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
71	Mechanical Resources Incorporated Top agencies Navy (Department of the Navy)	$38,024	0.1%	Rank history: not on the FY2022–FY2024 lists and #59 in FY2025; down 32 since FY2020.
72	Resa Power LLC Top agencies VA (Department of Veterans Affairs)	$38,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
73	Fargo Pacific Inc. Top agencies Navy (Department of the Navy)	$37,694	0.1%	Rank history: not on the FY2022–FY2024 lists and #82 in FY2025; new, not ranked in FY2020.
74	Government Contracting Resources, Inc. Top agencies Navy (Department of the Navy)	$34,430	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
75	Initial Saudi Arabia Ltd Top agencies DOS (Department of State)	$33,043	0.1%	Rank history: #76 in FY2022, #78 in FY2023, #73 in FY2024 and not on the FY2025 list; up 5 since FY2020.
76	Noresco LLC Through Automated Logic Corporation Top agencies USAF (Department of the Air Force)	$31,725	0.1%	Rank history: #81 in FY2022, #81 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
77	Okinawa Sobi Kogyo, K.K. Top agencies Navy (Department of the Navy)	$31,622	0.1%	Rank history: not on the FY2022–FY2024 lists and #27 in FY2025; new, not ranked in FY2020.
78	Andy Ramos Electric LLC Top agencies VA (Department of Veterans Affairs)	$25,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
79	General and Mechanical Services, LLC Top agencies CFTC (Commodity Futures Trading Commission)	$24,679	<0.1%	Rank history: #86 in FY2022, #86 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2020.
80	Interstate Construction LLC Top agencies VA (Department of Veterans Affairs)	$24,247	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
81	Mig Gov, LLC Top agencies Navy (Department of the Navy)	$23,554	<0.1%	Rank history: not on the FY2022 list, #89 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
82	Bassec, LLC Top agencies DOS (Department of State)	$22,650	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
83	Clemons Inc. Top agencies USAF (Department of the Air Force)	$21,600	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
84	Omniverter Inc. Top agencies DOS (Department of State)	$19,925	<0.1%	Rank history: not on the FY2022 list, #98 in FY2023, #82 in FY2024 and #58 in FY2025; up 5 since FY2020.
85	Fire Hydrant Repair & Service LLC Top agencies DHS (Department of Homeland Security)	$19,450	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
86	C.r. Powless & Co LLC Top agencies DHS (Department of Homeland Security)	$19,250	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 2 since FY2020.
87	Dsc-Emi Maintenance Solutions, LLC Top agencies Navy (Department of the Navy)	$19,004	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
88	V. Lopez JR. & Sons General Engineering Contractors, Inc. Top agencies USAF (Department of the Air Force)	$17,400	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
89	Lighting Control Services, LLC Top agencies Smithsonian (Smithsonian Institution)	$15,935	<0.1%	Rank history: #73 in FY2022, #40 in FY2023, #22 in FY2024 and not on the FY2025 list; down 3 since FY2020.
90	KK Pools Private Limited Top agencies DOS (Department of State)	$15,904	<0.1%	Rank history: #90 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
91	Inland Power & Light Co. Top agencies DOI (Department of the Interior)	$13,890	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
92	Otis Top agencies DOS (Department of State)	$12,634	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
93	Tsontos, Michael M., S.A. Top agencies Navy (Department of the Navy)	$11,789	<0.1%	Rank history: #58 in FY2022, #46 in FY2023, not on the FY2024 list and #23 in FY2025; new, not ranked in FY2020.
94	Roper Technologies, Inc. Through Data Innovations LLC Top agencies VA (Department of Veterans Affairs)	$11,671	<0.1%	Rank history: #84 in FY2022, #83 in FY2023, #51 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
95	Capital Lighting & Supply Inc. Top agencies Navy (Department of the Navy)	$11,415	<0.1%	Rank history: #92 in FY2022, #95 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
96	Air FLO Cleaning Systems LLC Top agencies DLA (Defense Logistics Agency)	$10,840	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 11 since FY2020.
97	Horizon Mechanical Services LLC Top agencies DOJ (Department of Justice)	$10,840	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
98	Duthie Electric Service Corporation Top agencies VA (Department of Veterans Affairs)	$10,171	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	Ram Telecom LLC Top agencies DOJ (Department of Justice)	$10,147	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
100	"Petrol" Uzemanyagtolto Allomasokat Tervezo, Epito, Szerelo Es Javito Korlatolt Felelossegu Tarsasag Top agencies DOS (Department of State)	$9,208	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.

Show 75 more

100 of 119 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 $54.9 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.

Quick answers

Who were the top 10 PSC Z1NZ contractors in FY2021?

1. American Electric Power Company, Inc. ($12.9M), 2. Innovative Support Solutions, Inc. ($5.8M), 3. Fuji Construction Co.,Ltd. ($4.86M), 4. Swan Contracting LLC ($3.83M), 5. American Vet Industries, LLC ($2.87M), 6. American Engineering Corporation ($2.57M), 7. Exelon Corporation ($1.81M), 8. JX Holdings Inc. ($1.62M), 9. QA & SW Construction LLC ($1.6M), 10. Valdez WA Patriot Joint Venture ($987K).

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