Top 100 Contractors in NAICS 2371: Utility System Construction, FY2023

Name: Top 100 Contractors in NAICS 2371: Utility System Construction, FY2023
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2022 – Sep 30, 2023 Code page on GovTribe

The top 10 won 39% of FY2023 NAICS 2371 contract dollars

Contract obligations: $2,381,146,974 Net of deobligations, by contracts coded NAICS 2371 or a code under it
Contractors: 955 Parent companies with an obligation
Largest contractor: Stronghold Engineering Inc. $212 million, 8.7% 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	Stronghold Engineering Inc. Top agencies DOI (Department of the Interior)	$212,262,277	8.7%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #83 in FY2025; new.
2	Black Micro Corporation Top agencies Navy (Department of the Navy)	$201,801,348	8.3%	Rank history: not on the FY2021–FY2022 lists, #29 in FY2024 and not on the FY2025 list; new.
3	A&R Pacific-Garney Federal JV Top agencies Navy (Department of the Navy)	$154,880,880	6.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
4	Aptim Federal Services LLC 2 awardees Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) Army (Department of the Army)	$70,947,525	2.9%	Rank history: #7 in FY2021, not on the FY2022 list, #15 in FY2024 and not on the FY2025 list; returned.
5	S.j. Louis Construction, Inc. Top agencies DOI (Department of the Interior)	$67,314,613	2.8%	Rank history: not on the FY2021 list, #3 in FY2022, #76 in FY2024 and not on the FY2025 list; down 2 since FY2022.
6	Nova Constructors-Obayashi JV Top agencies Army (Department of the Army)	$60,516,346	2.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
7	Bristol Bay Native Corporation 3 awardees, including Panhandle Power Solutions LLC, Bristol Engineering Services Company, LLC and CCI Group LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$48,834,646	2.0%	Rank history: #33 in FY2021, not on the FY2022 list, #13 in FY2024 and #33 in FY2025; up 111 since FY2022.
8	Nova Group Inc. 3 awardees, including Northern Powerline Constructors, Inc. and Summit Line Construction, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$47,893,835	2.0%	Rank history: #17 in FY2021, #7 in FY2022, #81 in FY2024 and not on the FY2025 list; down 1 since FY2022.
9	Sgjv2, LLC Top agencies VA (Department of Veterans Affairs)	$41,290,000	1.7%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
10	Reliable Contracting Group, LLC Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) Navy (Department of the Navy)	$38,924,091	1.6%	Rank history: #6 in FY2021, #16 in FY2022, #20 in FY2024 and #8 in FY2025; up 6 since FY2022.
11	Wood Environment & Infrastructure Solutions Inc. Through WSP USA Environment & Infrastructure Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$38,359,719	1.6%	Rank history: #5 in FY2021, #20 in FY2022 and not on the FY2024–FY2025 lists; up 9 since FY2022.
12	Tybe-Garney Federal JV LLC Top agencies Navy (Department of the Navy)	$38,134,761	1.6%	Rank history: not on the FY2021 list, #5 in FY2022, not on the FY2024 list and #61 in FY2025; down 7 since FY2022.
13	Sealaska Corporation Through Sealaska Construction Solutions, LLC Top agencies Army (Department of the Army)	$37,522,928	1.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
14	Derian / Occ, A Joint Venture Top agencies Army (Department of the Army)	$35,798,190	1.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 116 since FY2022.
15	The Walsh Group Through Archer Western Construction, LLC Top agencies DOI (Department of the Interior)	$35,562,597	1.5%	Rank history: #13 in FY2021, #4 in FY2022 and not on the FY2024–FY2025 lists; down 11 since FY2022.
16	Winnebago Tribe of Nebraska Through HCI Management Services Company Top agencies DOS (Department of State)	$35,500,000	1.5%	Rank history: #8 in FY2021, #33 in FY2022, #87 in FY2024 and not on the FY2025 list; up 17 since FY2022.
17	TOA Corporation Top agencies Army (Department of the Army)	$31,970,444	1.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
18	Hsgs-Ameresco, LLC Top agencies USAF (Department of the Air Force)	$31,546,692	1.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
19	Blue World Construction Inc. Top agencies DOI (Department of the Interior) USDA (Department of Agriculture)	$30,706,421	1.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
20	Hawk-Niking LLC Top agencies Army (Department of the Army)	$29,773,322	1.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
21	Aptim-North Wind Construction JV LLC Top agencies DOE (Department of Energy)	$29,356,803	1.2%	Rank history: #62 in FY2021, #52 in FY2022 and not on the FY2024–FY2025 lists; up 31 since FY2022.
22	Red Point Construction LLC Top agencies DLA (Defense Logistics Agency) Army (Department of the Army) Commerce (Department of Commerce)	$27,938,087	1.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
23	Pate Construction Co., Inc. Top agencies DOI (Department of the Interior)	$27,216,950	1.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
24	Goshawk, LLC 2 awardees Top agencies DOI (Department of the Interior) DLA (Defense Logistics Agency) Army (Department of the Army)	$26,172,560	1.1%	Rank history: #41 in FY2021, #24 in FY2022, #19 in FY2024 and #62 in FY2025; unchanged since FY2022.
25	Dawson Enterprises, Inc. Top agencies DLA (Defense Logistics Agency)	$22,795,494	0.9%	Rank history: #32 in FY2021, #17 in FY2022, #39 in FY2024 and #13 in FY2025; down 8 since FY2022.
26	Structural Group, Inc. Through Structural Preservation Systems, LLC Top agencies Army (Department of the Army)	$22,522,854	0.9%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
27	W.m. Schlosser Co., Inc. Top agencies Army (Department of the Army)	$20,777,000	0.8%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
28	Cape-Burns & Mcdonnell JV Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$20,164,659	0.8%	Rank history: #29 in FY2021, #46 in FY2022 and not on the FY2024–FY2025 lists; up 18 since FY2022.
29	Gsi-Pond JV LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$19,235,813	0.8%	Rank history: not on the FY2021–FY2022 lists, #10 in FY2024 and #28 in FY2025; up 121 since FY2022.
30	Brice Civil Constructors, Inc. Top agencies Army (Department of the Army)	$19,138,524	0.8%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 109 since FY2022.
31	Mem Contracting, Inc. Top agencies VA (Department of Veterans Affairs)	$18,960,842	0.8%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
32	Koontz Electric Company, Incorporated Top agencies Army (Department of the Army) DOE (Department of Energy)	$17,579,892	0.7%	Rank history: #37 in FY2021, #83 in FY2022, #78 in FY2024 and not on the FY2025 list; up 51 since FY2022.
33	Souza Construction, Inc. 2 awardees Top agencies Navy (Department of the Navy)	$16,712,462	0.7%	Rank history: #57 in FY2021, #94 in FY2022, #26 in FY2024 and not on the FY2025 list; up 61 since FY2022.
34	Weston Solutions Holdings, Inc. 2 awardees, including Weston Solutions Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) Army (Department of the Army)	$16,674,310	0.7%	Rank history: #3 in FY2021, #13 in FY2022, #2 in FY2024 and #6 in FY2025; down 21 since FY2022.
35	Synergy Electric Company, Inc. Top agencies Navy (Department of the Navy)	$15,753,834	0.6%	Rank history: #4 in FY2021, #30 in FY2022, #8 in FY2024 and #54 in FY2025; down 5 since FY2022.
36	TDX Power Services LLC Top agencies DOI (Department of the Interior)	$15,521,800	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
37	CCI Facility Contractors, LLC Top agencies DOJ (Department of Justice) VA (Department of Veterans Affairs)	$15,381,942	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
38	East Coast Powerline LLC Top agencies DOE (Department of Energy)	$15,063,374	0.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
39	Transtar Pipeline and Orion Construction JV Top agencies Navy (Department of the Navy)	$14,700,944	0.6%	Rank history: #89 in FY2021, #86 in FY2022 and not on the FY2024–FY2025 lists; up 47 since FY2022.
40	D7, LLC 2 awardees Top agencies Army (Department of the Army)	$14,564,273	0.6%	Rank history: #99 in FY2021, #57 in FY2022 and not on the FY2024–FY2025 lists; up 17 since FY2022.
41	Kajima Corporation 2 awardees, including Hawaiian Dredging Construction Company, Inc. and Icon Si (Aust) PTY Ltd Top agencies Navy (Department of the Navy)	$14,064,780	0.6%	Rank history: #30 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
42	A. West Enterprise, LLC Top agencies NASA (National Aeronautics and Space Administration)	$13,948,360	0.6%	Rank history: #90 in FY2021, not on the FY2022 list, not on the FY2024 list and #53 in FY2025; returned.
43	Weeminuche Construction Authority Through WCA Construction, LLC Top agencies DOI (Department of the Interior)	$13,237,100	0.5%	Rank history: not on the FY2021 list, #11 in FY2022 and not on the FY2024–FY2025 lists; down 32 since FY2022.
44	Asrc Prime Constructors, LLC Top agencies Army (Department of the Army)	$12,934,400	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
45	CMP Commercial Construction Inc. Top agencies DOT (Department of Transportation)	$12,795,774	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
46	JMG Constructors LLC Top agencies DOI (Department of the Interior)	$12,689,632	0.5%	Rank history: #68 in FY2021, #76 in FY2022 and not on the FY2024–FY2025 lists; up 30 since FY2022.
47	SES Energy Services LLC Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$12,369,426	0.5%	Rank history: not on the FY2021 list, #32 in FY2022, #80 in FY2024 and not on the FY2025 list; down 15 since FY2022.
48	Berger Cummins J V Top agencies Army (Department of the Army)	$11,537,785	0.5%	Rank history: not on the FY2021–FY2022 lists, #85 in FY2024 and #16 in FY2025; up 129 since FY2022.
49	Hbhansen Construction Inc Through HB Hansen Construction, Inc. Top agencies DOI (Department of the Interior)	$11,481,050	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
50	Tri-Technic Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$10,729,750	0.4%	Rank history: #58 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 252 since FY2022.
51	Mitomo Denki Service Co. Ltd. Through Mitomo Co., Ltd. Top agencies Navy (Department of the Navy)	$10,706,931	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
52	Renova Environmental Company Top agencies DOI (Department of the Interior)	$10,383,206	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
53	Hampton Roads Mechanical of Virginia LLC Top agencies Navy (Department of the Navy)	$10,331,527	0.4%	Rank history: not on the FY2021–FY2022 lists, #27 in FY2024 and #23 in FY2025; new.
54	San Juan Construction, Inc. Top agencies Army (Department of the Army)	$10,151,892	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 102 since FY2022.
55	MX Construction, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$9,724,782	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 380 since FY2022.
56	Midwest Electrical Construction Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$9,665,577	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
57	Nora Contracting & Hagerman LLC Top agencies VA (Department of Veterans Affairs)	$9,625,811	0.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
58	Grimmer Construction Inc. Top agencies Army (Department of the Army) DOI (Department of the Interior)	$8,701,573	0.4%	Rank history: #48 in FY2021, #89 in FY2022, #97 in FY2024 and not on the FY2025 list; up 31 since FY2022.
59	Hartman-Walsh Corp Through Hartman-Walsh Painting Company Top agencies DOI (Department of the Interior)	$8,253,395	0.3%	Rank history: not on the FY2021 list, #60 in FY2022, #68 in FY2024 and #64 in FY2025; up 1 since FY2022.
60	Hitachi, Ltd. Through Hitachi Energy USA Inc. Top agencies USAF (Department of the Air Force)	$7,979,221	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
61	Harold Macquinn Inc. Top agencies DOI (Department of the Interior)	$7,800,350	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
62	Mcw-Tmg1 LLC Top agencies DOJ (Department of Justice)	$7,777,810	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
63	HCI Management Services Company Top agencies DOS (Department of State)	$7,750,000	0.3%	Rank history: not on the FY2021 list, #15 in FY2022, #31 in FY2024 and not on the FY2025 list; down 48 since FY2022.
64	Government of Canada Through Canadian Commercial Corporation Top agencies Army (Department of the Army)	$7,566,758	0.3%	Rank history: not on the FY2021 list, #90 in FY2022 and not on the FY2024–FY2025 lists; up 26 since FY2022.
65	Granite-Obayashi A Joint Venture Top agencies Navy (Department of the Navy)	$7,500,000	0.3%	Rank history: #11 in FY2021, not on the FY2022 list, #64 in FY2024 and not on the FY2025 list; returned.
66	Yerkes South - Advanced Roofing JV1 LLC Top agencies VA (Department of Veterans Affairs)	$7,300,882	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
67	Aytekin Serol Insaat Taahhut Muhendislik Anonim Sirketi Top agencies DLA (Defense Logistics Agency)	$7,154,271	0.3%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #50 in FY2025; new.
68	Prospect Construction, Inc. Top agencies Commerce (Department of Commerce)	$7,078,393	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
69	Sygnos Inc. Top agencies Navy (Department of the Navy)	$6,834,968	0.3%	Rank history: #97 in FY2021, #56 in FY2022, #75 in FY2024 and #72 in FY2025; down 13 since FY2022.
70	Rudzik Excavating Inc Top agencies Army (Department of the Army)	$6,526,443	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
71	Maga Mechanical Contractors, Inc. Top agencies Army (Department of the Army)	$6,126,064	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
72	Gemmo Holding SPA Through Gemmo S.P.A. (Societa' Con Unico Socio) Top agencies Navy (Department of the Navy)	$6,022,018	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
73	Techni-Con, Inc. Top agencies USAF (Department of the Air Force)	$6,015,000	0.2%	Rank history: not on the FY2021 list, #66 in FY2022 and not on the FY2024–FY2025 lists; down 7 since FY2022.
74	Silver Mountain Weston SB JV LLC Top agencies DLA (Defense Logistics Agency)	$6,000,994	0.2%	Rank history: not on the FY2021 list, #51 in FY2022, #42 in FY2024 and #79 in FY2025; down 23 since FY2022.
75	Sandry Construction Company, Inc. Top agencies DOI (Department of the Interior)	$5,990,514	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
76	Apex Construction Group, LLC Top agencies USAF (Department of the Air Force)	$5,796,137	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
77	Miami Nation Enterpeises 2 awardees, including Wiipica QRI JV LLC and Miami Tribal Systems Integrators, LLC Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$5,730,591	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 261 since FY2022.
78	Ocean Construction Services Inc. Top agencies Navy (Department of the Navy) DOI (Department of the Interior)	$5,702,666	0.2%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2024 and not on the FY2025 list; up 181 since FY2022.
79	Kobo Utility Construction Corp. Top agencies DOT (Department of Transportation)	$5,631,697	0.2%	Rank history: not on the FY2021 list, #58 in FY2022 and not on the FY2024–FY2025 lists; down 21 since FY2022.
80	Arrow Indian Contractors, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) USDA (Department of Agriculture)	$5,558,296	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
81	Gardner Zemke Company Top agencies Army (Department of the Army) DOI (Department of the Interior)	$5,558,079	0.2%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2024 and not on the FY2025 list; new.
82	Osborne Construction Co Top agencies Army (Department of the Army)	$5,531,437	0.2%	Rank history: #31 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
83	Bairco Construction Inc. Top agencies DOI (Department of the Interior)	$5,310,700	0.2%	Rank history: #52 in FY2021, not on the FY2022 list, #62 in FY2024 and not on the FY2025 list; up 31 since FY2022.
84	Four Tribes Enterprises, LLC Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$5,207,668	0.2%	Rank history: #24 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
85	Ameresco Inc. Top agencies Army (Department of the Army)	$5,113,667	0.2%	Rank history: not on the FY2021 list, #38 in FY2022 and not on the FY2024–FY2025 lists; down 47 since FY2022.
86	Tepa Construction Solutions, LLC Top agencies DLA (Defense Logistics Agency)	$4,902,118	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
87	J29 Enterprises LLC Top agencies Army (Department of the Army)	$4,687,108	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
88	Iceland Prime Contractor Ltd Top agencies Navy (Department of the Navy)	$4,586,651	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
89	Pick Electric Inc. Top agencies Army (Department of the Army)	$4,558,206	0.2%	Rank history: not on the FY2021–FY2022 lists, #90 in FY2024 and not on the FY2025 list; new.
90	Jimenez Engineering Solutions, LLC 2 awardees Top agencies USDA (Department of Agriculture) Navy (Department of the Navy)	$4,554,618	0.2%	Rank history: not on the FY2021 list, #31 in FY2022 and not on the FY2024–FY2025 lists; down 59 since FY2022.
91	Miller Electric Company Inc. Top agencies Navy (Department of the Navy)	$4,410,842	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
92	Alabama Gas Corporation Through Spire Missouri Inc. Top agencies Army (Department of the Army)	$4,358,924	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
93	Inglett & Stubbs International LLC Top agencies Army (Department of the Army)	$4,239,411	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 45 since FY2022.
94	MV7 Inc Top agencies USAF (Department of the Air Force)	$4,216,770	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
95	Dvorak, LLC Top agencies USDA (Department of Agriculture) NASA (National Aeronautics and Space Administration)	$4,105,744	0.2%	Rank history: #61 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 140 since FY2022.
96	Industrial Maintenance Services Inc. Top agencies Army (Department of the Army)	$4,057,433	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
97	Central Environmental Inc. Top agencies Navy (Department of the Navy)	$4,038,174	0.2%	Rank history: #77 in FY2021, #40 in FY2022, #53 in FY2024 and not on the FY2025 list; down 57 since FY2022.
98	Power Pro Plus Inc. Top agencies Navy (Department of the Navy)	$4,031,990	0.2%	Rank history: not on the FY2021–FY2022 lists, #18 in FY2024 and #84 in FY2025; new.
99	Native Hawaiian Community Development Corporation 2 awardees, including GSI North America Inc. and GSI Pacific Inc. Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$3,890,017	0.2%	Rank history: #82 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 34 since FY2022.
100	AAA General Contractors LLC Top agencies Army (Department of the Army)	$3,845,415	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.

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100 of 955 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 2371

Code	Net obligations	Largest contractor
23711 Water and Sewer Line and Related Structures Construction	$1,169,219,785	Stronghold Engineering Inc.
23712 Oil and Gas Pipeline and Related Structures Construction	$706,611,575	Black Micro Corporation
23713 Power and Communication Line and Related Structures Construction	$505,315,615	Sgjv2, LLC

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 $2.45 billion 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.

Quick answers

Who were the top 10 NAICS 2371 contractors in FY2023?

1. Stronghold Engineering Inc. ($212M), 2. Black Micro Corporation ($202M), 3. A&R Pacific-Garney Federal JV ($155M), 4. Aptim Federal Services LLC ($70.9M), 5. S.j. Louis Construction, Inc. ($67.3M), 6. Nova Constructors-Obayashi JV ($60.5M), 7. Bristol Bay Native Corporation ($48.8M), 8. Nova Group Inc. ($47.9M), 9. Sgjv2, LLC ($41.3M), 10. Reliable Contracting Group, LLC ($38.9M).

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