Top 100 Contractors in NAICS 221: Utilities, FY2025

Name: Top 100 Contractors in NAICS 221: Utilities, FY2025
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe

The top 10 won 41% of FY2025 NAICS 221 contract dollars

Contract obligations: $3,282,932,143 Net of deobligations, by contracts coded NAICS 221 or a code under it
Contractors: 1,347 Parent companies with an obligation
Largest contractor: American Water Works Company Inc. $208 million, 6.1% of obligations
Data as of: Oct 23, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	American Water Works Company Inc. 3 awardees, including American Water Operations and Maintenance, LLC, American Water Military Services, LLC and Kentucky-American Water Company Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$207,814,259	6.1%	Rank history: #2 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2024; unchanged since FY2024.
2	American Centrifuge Operating, LLC Top agencies DOE (Department of Energy)	$197,816,150	5.8%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2024; up 8 since FY2024.
3	Foreign Utility Consolidated Reporting Top agencies Army (Department of the Army)	$177,491,187	5.2%	Rank history: #3 in FY2021, #3 in FY2022, #2 in FY2023 and #2 in FY2024; down 1 since FY2024.
4	Dominion Energy, Inc. 15 awardees, including Virginia Electric and Power Company, Dominion Privatization Texas, LLC and Dominion Privatization Virginia, LLC Top agencies Army (Department of the Army) DOJ (Department of Justice) NASA (National Aeronautics and Space Administration)	$161,941,976	4.7%	Rank history: #5 in FY2021, #4 in FY2022, #4 in FY2023 and #5 in FY2024; up 1 since FY2024.
5	American States Water Company 9 awardees, including Old North Utility Services, Inc., Fort Bliss Water Services Company and Emerald Coast Utility Services Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$138,599,275	4.0%	Rank history: not on the FY2021 list, #78 in FY2022, #34 in FY2023 and #6 in FY2024; up 1 since FY2024.
6	Doyon Utilities, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$117,310,258	3.4%	Rank history: #4 in FY2021, #5 in FY2022, #5 in FY2023 and #3 in FY2024; down 3 since FY2024.
7	City Light & Power FTC LLC 6 awardees, including City Light & Power Aberdeen, LLC, City Light & Power, Inc. and City Light & Power Jblm LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$116,132,560	3.4%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2024; unchanged since FY2024.
8	Exelon Corporation 6 awardees, including Potomac Electric Power Co, Baltimore Gas and Electric Company and Peco Energy Company Top agencies HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration) Smithsonian (Smithsonian Institution)	$104,413,078	3.0%	Rank history: not on the FY2021–FY2023 lists and #28 in FY2024; up 20 since FY2024.
9	Constellation Newenergy, Inc. Top agencies GSA (General Services Administration) VA (Department of Veterans Affairs) SSA (Social Security Administration)	$104,021,066	3.0%	Rank history: not on the FY2021–FY2023 lists and #28 in FY2024; up 19 since FY2024.
10	WGL Holdings Inc. 2 awardees, including WGL Energy Services, Inc. and Washington Gas Light Company Top agencies GSA (General Services Administration) HHS (Department of Health and Human Services) DOT (Department of Transportation)	$79,211,573	2.3%	Rank history: #7 in FY2021, #8 in FY2022, #6 in FY2023 and #8 in FY2024; down 2 since FY2024.
11	Korea Electric Power Corporation 2 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$79,114,090	2.3%	Rank history: #8 in FY2021, #12 in FY2022, #8 in FY2023 and #11 in FY2024; unchanged since FY2024.
12	American Electric Power Company, Inc. 5 awardees, including AEP Energy Inc., Public Service Company of Oklahoma and AEP Texas Inc. Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice) DOL (Department of Labor)	$61,383,974	1.8%	Rank history: #11 in FY2021, #19 in FY2022, #9 in FY2023 and #12 in FY2024; unchanged since FY2024.
13	Cordia LLC 5 awardees, including Direct Energy Business LLC, NRG Business Marketing LLC and NRG Energy, Inc. Top agencies VA (Department of Veterans Affairs) GSA (General Services Administration) DOJ (Department of Justice)	$60,859,206	1.8%	Rank history: #49 in FY2021, #14 in FY2022 and not on the FY2023–FY2024 lists; returned.
14	Pacific Gas and Electric Company Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) DOI (Department of the Interior)	$60,159,209	1.8%	Rank history: not on the FY2021–FY2023 lists and #13 in FY2024; down 1 since FY2024.
15	Keenan FT Detrick Energy LLC Top agencies Army (Department of the Army)	$51,592,993	1.5%	Rank history: #9 in FY2021, #11 in FY2022, #17 in FY2023 and #14 in FY2024; down 1 since FY2024.
16	Ahtna Usa-Cdm JV Top agencies Army (Department of the Army)	$50,954,126	1.5%	Rank history: not on the FY2021–FY2024 lists; new.
17	The Southern Company 7 awardees, including Alabama Power Company, Georgia Power Company and Southern Company Gas Top agencies Army (Department of the Army) DOJ (Department of Justice) GSA (General Services Administration)	$50,545,798	1.5%	Rank history: #12 in FY2021, #10 in FY2022, #15 in FY2023 and #16 in FY2024; down 1 since FY2024.
18	Vicinity Energy Inc. 2 awardees, including Vicinity Energy Philadelphia Inc. Top agencies VA (Department of Veterans Affairs) Treasury (Department of the Treasury) GSA (General Services Administration)	$43,693,371	1.3%	Rank history: not on the FY2021–FY2024 lists; up 169 since FY2024.
19	Jacobs Engineering Group Inc. 2 awardees, including Ch2M Hill Constructors, Inc. and Jacobs Project Management Co Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$41,296,953	1.2%	Rank history: not on the FY2021–FY2022 lists, #46 in FY2023 and #19 in FY2024; unchanged since FY2024.
20	Veolia Water West Operating Services Inc. Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico)	$35,091,067	1.0%	Rank history: not on the FY2021–FY2023 lists and #36 in FY2024; up 16 since FY2024.
21	Tokyo Gas Co.,Ltd. Top agencies Navy (Department of the Navy)	$32,663,599	1.0%	Rank history: not on the FY2021 list, #13 in FY2022, #13 in FY2023 and #37 in FY2024; up 16 since FY2024.
22	Oklahoma City Water Utilities Trust 2 awardees Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$31,838,348	0.9%	Rank history: not on the FY2021 list, #48 in FY2022, #22 in FY2023 and #17 in FY2024; down 5 since FY2024.
23	Engie Resources LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) DOJ (Department of Justice)	$30,162,703	0.9%	Rank history: #60 in FY2021, #17 in FY2022, #36 in FY2023 and #25 in FY2024; up 2 since FY2024.
24	Bering-Weston JV, LLC Top agencies Army (Department of the Army)	$28,482,728	0.8%	Rank history: not on the FY2021–FY2024 lists; new.
25	Aqua Engineers Inc. Top agencies Army (Department of the Army)	$28,141,640	0.8%	Rank history: #14 in FY2021, #18 in FY2022, #20 in FY2023 and #20 in FY2024; down 5 since FY2024.
26	Duke Energy Corporation 3 awardees, including Duke Energy Progress, LLC, Piedmont Natural Gas Company, Inc. and Duke Energy Carolinas, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DOJ (Department of Justice)	$27,944,806	0.8%	Rank history: #26 in FY2021, #9 in FY2022, #10 in FY2023 and #24 in FY2024; down 2 since FY2024.
27	Puget Sound Energy Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DOI (Department of the Interior)	$25,978,910	0.8%	Rank history: not on the FY2021–FY2024 lists; up 140 since FY2024.
28	OGE Energy Corp 3 awardees, including Oklahoma Gas and Electric Company and Arkansas Oklahoma Gas Corporation Top agencies USAF (Department of the Air Force) DOJ (Department of Justice) GSA (General Services Administration)	$24,764,242	0.7%	Rank history: #37 in FY2021, #34 in FY2022, #35 in FY2023 and #27 in FY2024; down 1 since FY2024.
29	Nextera Energy Inc. 2 awardees, including Gexa Energy, LP and Pivotal Utility Holdings Inc. Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$23,903,962	0.7%	Rank history: #13 in FY2021, #15 in FY2022, #11 in FY2023 and #18 in FY2024; down 11 since FY2024.
30	Consolidated Edison Inc. 2 awardees, including Consolidated Edison Company of New York, Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) Smithsonian (Smithsonian Institution)	$23,638,967	0.7%	Rank history: not on the FY2021–FY2022 lists, #12 in FY2023 and #45 in FY2024; up 15 since FY2024.
31	Augusta-Richmond County Government Top agencies Army (Department of the Army)	$22,613,682	0.7%	Rank history: #36 in FY2021, #40 in FY2022, #60 in FY2023 and #41 in FY2024; up 10 since FY2024.
32	American Water Enterprises, LLC Top agencies Army (Department of the Army)	$22,170,525	0.6%	Rank history: #19 in FY2021, #27 in FY2022, #25 in FY2023 and #32 in FY2024; unchanged since FY2024.
33	County of Hardin Through Hardin County Water District NO. 1 Top agencies Army (Department of the Army)	$21,790,023	0.6%	Rank history: not on the FY2021–FY2024 lists; up 68 since FY2024.
34	Washington Suburban Sanitary Commission Top agencies HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration) Smithsonian (Smithsonian Institution)	$19,691,336	0.6%	Rank history: #32 in FY2021, #37 in FY2022, #39 in FY2023 and #34 in FY2024; unchanged since FY2024.
35	RIO Grande Electric Cooperative, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$19,489,301	0.6%	Rank history: #15 in FY2021, #25 in FY2022, #32 in FY2023 and #29 in FY2024; down 6 since FY2024.
36	Sho-Me Power Electric Cooperative Top agencies Army (Department of the Army)	$19,091,045	0.6%	Rank history: #25 in FY2021, #33 in FY2022, #38 in FY2023 and #31 in FY2024; down 5 since FY2024.
37	Schuyler Line Navigation Company LLC Top agencies Navy (Department of the Navy)	$18,291,864	0.5%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2024; up 2 since FY2024.
38	United Energy Corporation Through United Energy Trading, LLC Top agencies GSA (General Services Administration) NASA (National Aeronautics and Space Administration) VA (Department of Veterans Affairs)	$18,189,080	0.5%	Rank history: not on the FY2021–FY2024 lists; up 100 since FY2024.
39	Black Hills Service Company LLC 3 awardees, including Black Hills Wyoming Gas, LLC and Black Hills Utility Holdings Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) DOI (Department of the Interior)	$17,593,863	0.5%	Rank history: not on the FY2021–FY2023 lists and #72 in FY2024; up 33 since FY2024.
40	Sunstate Environmental Services Inc. Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico)	$17,520,666	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
41	Florida Power & Light Company 4 awardees, including Gulf Power Company Top agencies NASA (National Aeronautics and Space Administration) DOJ (Department of Justice) DECA (Defense Commissary Agency)	$17,237,482	0.5%	Rank history: #13 in FY2021, #15 in FY2022, #11 in FY2023 and #18 in FY2024; down 23 since FY2024.
42	Choctawhatchee Electric Cooperative Inc. Top agencies USAF (Department of the Air Force)	$16,622,502	0.5%	Rank history: not on the FY2021–FY2023 lists and #48 in FY2024; up 6 since FY2024.
43	The Potomac Edison Co 6 awardees, including The Cleveland Electric Illuminating Co, Ohio Edison Company and Jersey Central Power & Light Co Top agencies DOJ (Department of Justice) NASA (National Aeronautics and Space Administration) Treasury (Department of the Treasury)	$16,453,209	0.5%	Rank history: #18 in FY2021, #22 in FY2022, #21 in FY2023 and #38 in FY2024; down 5 since FY2024.
44	Buyo Gas Co.,Ltd. 2 awardees, including Buyo Ekika Gas Co., Ltd. Top agencies USAF (Department of the Air Force)	$16,196,918	0.5%	Rank history: #66 in FY2021, #36 in FY2022, #37 in FY2023 and #44 in FY2024; unchanged since FY2024.
45	Canoochee Electric Membership Corp Top agencies Army (Department of the Army)	$14,915,981	0.4%	Rank history: #43 in FY2021, #46 in FY2022, #50 in FY2023 and #46 in FY2024; up 1 since FY2024.
46	Enstar Natural Gas Company, LLC Top agencies USAF (Department of the Air Force) DOI (Department of the Interior)	$14,783,923	0.4%	Rank history: not on the FY2021–FY2023 lists and #78 in FY2024; up 32 since FY2024.
47	Schutt Industries of Clintonville, Wis., Inc. Top agencies Army (Department of the Army)	$14,756,436	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
48	The AES Corporation 2 awardees, including The Dayton Power and Light Company Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$14,736,291	0.4%	Rank history: #86 in FY2021, #71 in FY2022, #66 in FY2023 and #82 in FY2024; up 34 since FY2024.
49	Base Utilities Inc. Top agencies USAF (Department of the Air Force)	$13,816,793	0.4%	Rank history: #29 in FY2021, #47 in FY2022, #43 in FY2023 and #43 in FY2024; down 6 since FY2024.
50	Cobb Electric Membership Corporation 4 awardees, including Gas South, LLC, Enspire Energy, LLC and Infinite Energy, LLC Top agencies NASA (National Aeronautics and Space Administration) VA (Department of Veterans Affairs) DOJ (Department of Justice)	$13,317,094	0.4%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2023 and #60 in FY2024; up 10 since FY2024.
51	Gulf Coast Electric Cooperative Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$13,132,141	0.4%	Rank history: #40 in FY2021, #2 in FY2022, #45 in FY2023 and #69 in FY2024; up 18 since FY2024.
52	Hawaiian Electric Company, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DOJ (Department of Justice)	$12,861,023	0.4%	Rank history: not on the FY2021–FY2023 lists and #63 in FY2024; up 11 since FY2024.
53	Nikken Sogyo Co., Ltd. Top agencies Navy (Department of the Navy)	$12,528,634	0.4%	Rank history: #59 in FY2021, #72 in FY2022, #55 in FY2023 and #71 in FY2024; up 18 since FY2024.
54	Eneos Corporation Top agencies USAF (Department of the Air Force)	$12,121,054	0.4%	Rank history: not on the FY2021–FY2023 lists and #52 in FY2024; down 2 since FY2024.
55	Entergy Louisiana LLC Top agencies Army (Department of the Army) DOT (Department of Transportation) DOI (Department of the Interior)	$11,658,099	0.3%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2024; down 6 since FY2024.
56	Monongahela Power Company Top agencies DOJ (Department of Justice) DOE (Department of Energy) Treasury (Department of the Treasury)	$11,656,902	0.3%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2024; down 6 since FY2024.
57	Riverbend Water Resources District Top agencies Army (Department of the Army)	$11,312,863	0.3%	Rank history: #80 in FY2021, #76 in FY2022, #76 in FY2023 and #65 in FY2024; up 8 since FY2024.
58	Nolin Rural Electric Cooperative Corporation Top agencies Army (Department of the Army)	$11,220,809	0.3%	Rank history: #76 in FY2021, #43 in FY2022, #40 in FY2023 and #47 in FY2024; down 11 since FY2024.
59	Samchully Co.,Ltd. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$10,730,953	0.3%	Rank history: not on the FY2021 list, #54 in FY2022, #47 in FY2023 and #64 in FY2024; up 5 since FY2024.
60	The Navajo Nation Tribal Government Through Navajo Tribal Utility Authority Top agencies HHS (Department of Health and Human Services) DOI (Department of the Interior)	$10,643,068	0.3%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2023 and #62 in FY2024; up 2 since FY2024.
61	One Gas, Inc. 4 awardees Top agencies Army (Department of the Army) DOJ (Department of Justice) NARA (National Archives and Records Administration)	$9,562,032	0.3%	Rank history: not on the FY2021–FY2023 lists and #88 in FY2024; up 27 since FY2024.
62	Omega Pipeline Company, LLC Top agencies Army (Department of the Army)	$9,467,516	0.3%	Rank history: #47 in FY2021, #53 in FY2022, #58 in FY2023 and #68 in FY2024; up 6 since FY2024.
63	Teco Energy Inc. 2 awardees, including New Mexico Gas Company, Inc. and Peoples Gas System, Inc. Top agencies GSA (General Services Administration) USAF (Department of the Air Force) DOI (Department of the Interior)	$9,113,934	0.3%	Rank history: not on the FY2021–FY2024 lists; up 136 since FY2024.
64	Brunswick Electric Membership Corporation Top agencies Army (Department of the Army)	$8,855,344	0.3%	Rank history: not on the FY2021–FY2023 lists and #74 in FY2024; up 10 since FY2024.
65	Florida Governmental Utility Authority Top agencies USAF (Department of the Air Force)	$8,388,632	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
66	Central Coast Water Authority Top agencies USAF (Department of the Air Force)	$7,949,191	0.2%	Rank history: #56 in FY2021, #79 in FY2022, #65 in FY2023 and #66 in FY2024; unchanged since FY2024.
67	H&S Water and Waste Water Design and Consultancy Services Top agencies DOS (Department of State)	$7,794,977	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
68	PD Power Systems, LLC Top agencies Army (Department of the Army)	$7,772,752	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
69	Bairco Construction Inc. Top agencies DOI (Department of the Interior)	$7,738,457	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
70	Perc Water Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$7,645,390	0.2%	Rank history: #87 in FY2021, #84 in FY2022, #92 in FY2023 and #89 in FY2024; up 19 since FY2024.
71	City of Aberdeen Top agencies Army (Department of the Army)	$7,553,816	0.2%	Rank history: #67 in FY2021, #74 in FY2022, #73 in FY2023 and #54 in FY2024; down 17 since FY2024.
72	Flint Electric Membership Corp Top agencies Army (Department of the Army)	$7,493,915	0.2%	Rank history: #72 in FY2021, #51 in FY2022, #67 in FY2023 and #55 in FY2024; down 17 since FY2024.
73	City Public Services Board Top agencies USAF (Department of the Air Force)	$7,377,068	0.2%	Rank history: #51 in FY2021, #60 in FY2022, #77 in FY2023 and #58 in FY2024; down 15 since FY2024.
74	GTA Containers, LLC Top agencies Army (Department of the Army)	$7,027,804	0.2%	Rank history: not on the FY2021–FY2023 lists and #79 in FY2024; up 5 since FY2024.
75	Constellation Newenergy - Gas Division, LLC Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice) RRB (Railroad Retirement Board)	$6,957,800	0.2%	Rank history: not on the FY2021–FY2024 lists; up 83 since FY2024.
76	PG&E Corporation Through Pacific Energy Fuels Company Top agencies Army (Department of the Army)	$6,812,479	0.2%	Rank history: #16 in FY2021, #23 in FY2022, #23 in FY2023 and #42 in FY2024; down 34 since FY2024.
77	Verendrye Electric Cooperative Inc. Top agencies USAF (Department of the Air Force)	$6,632,144	0.2%	Rank history: #91 in FY2021, #99 in FY2022, #96 in FY2023 and #80 in FY2024; up 3 since FY2024.
78	Sulphur Springs Valley Electric Cooperative Inc. Top agencies Army (Department of the Army)	$5,818,574	0.2%	Rank history: #88 in FY2021, #81 in FY2022, #80 in FY2023 and not on the FY2024 list; up 27 since FY2024.
79	El Paso Electric Company Top agencies NASA (National Aeronautics and Space Administration) DOJ (Department of Justice) IBWC (International Boundary and Water Commission U.S.-Mexico)	$5,632,820	0.2%	Rank history: not on the FY2021–FY2024 lists; up 86 since FY2024.
80	Tama City Hall Top agencies USAF (Department of the Air Force)	$5,592,009	0.2%	Rank history: not on the FY2021 list, #70 in FY2022, #87 in FY2023 and #90 in FY2024; up 10 since FY2024.
81	Southern Maryland Electric Cooperative, Inc. Top agencies Navy (Department of the Navy)	$5,573,995	0.2%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023 and not on the FY2024 list; up 161 since FY2024.
82	Pyeongtaek-Si Water and Sewage Business Place Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$5,478,978	0.2%	Rank history: #74 in FY2021 and not on the FY2022–FY2024 lists; up 55 since FY2024.
83	Laclede Electric Cooperative Top agencies Army (Department of the Army)	$5,460,836	0.2%	Rank history: #73 in FY2021, #73 in FY2022, #69 in FY2023 and #97 in FY2024; up 14 since FY2024.
84	Goldbelt, Incorporated Through Goldbelt Global LLC Top agencies Army (Department of the Army)	$5,162,228	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
85	South Granville Water & Sewer Auth Top agencies DOJ (Department of Justice)	$5,014,867	0.1%	Rank history: not on the FY2021–FY2024 lists; up 21 since FY2024.
86	City of Wildwood City Hall Top agencies DOJ (Department of Justice)	$4,888,515	0.1%	Rank history: not on the FY2021–FY2024 lists; up 56 since FY2024.
87	Sun Coast Resources Inc. Top agencies VA (Department of Veterans Affairs)	$4,694,240	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
88	Nikken-Metawater JV Top agencies Navy (Department of the Navy)	$4,637,361	0.1%	Rank history: not on the FY2021–FY2024 lists; up 21 since FY2024.
89	Hosei Co., Ltd. Top agencies Navy (Department of the Navy)	$4,503,208	0.1%	Rank history: not on the FY2021–FY2023 lists and #98 in FY2024; up 9 since FY2024.
90	Ohio Valley Electrical Services, LLC Through Ohio Valley Electric Corporation Top agencies DOE (Department of Energy)	$4,503,000	0.1%	Rank history: not on the FY2021–FY2024 lists; up 58 since FY2024.
91	Washington Hospital Center Corporation Top agencies VA (Department of Veterans Affairs)	$4,472,798	0.1%	Rank history: not on the FY2021–FY2024 lists; up 24 since FY2024.
92	Pural Water Specialty Co. , Inc. Top agencies Army (Department of the Army)	$4,407,623	0.1%	Rank history: #55 in FY2021, #94 in FY2022, #64 in FY2023 and #91 in FY2024; down 1 since FY2024.
93	Mansfield Power & Gas LLC Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) GSA (General Services Administration)	$4,360,417	0.1%	Rank history: not on the FY2021–FY2024 lists; up 159 since FY2024.
94	Pinnacle West Capital Corporation 2 awardees, including Arizona Public Service Company and Liberty Utilities (Litchfield Park Water & Sewer) Corp. Top agencies HHS (Department of Health and Human Services) DOI (Department of the Interior) DOJ (Department of Justice)	$4,302,233	0.1%	Rank history: not on the FY2021–FY2022 lists, #27 in FY2023 and #100 in FY2024; up 6 since FY2024.
95	P D R Properties, Inc. Top agencies Army (Department of the Army)	$4,197,641	0.1%	Rank history: not on the FY2021–FY2023 lists and #96 in FY2024; up 1 since FY2024.
96	Freestate Electric Cooperative, Inc. Top agencies Army (Department of the Army)	$4,104,640	0.1%	Rank history: not on the FY2021–FY2022 lists, #78 in FY2023 and #86 in FY2024; down 10 since FY2024.
97	Vandenberg Solar I, LLC Top agencies USAF (Department of the Air Force)	$4,001,602	0.1%	Rank history: #83 in FY2021, #90 in FY2022, #99 in FY2023 and not on the FY2024 list; up 7 since FY2024.
98	Omaha Public Power District Top agencies USAF (Department of the Air Force)	$4,000,014	0.1%	Rank history: not on the FY2021–FY2022 lists, #63 in FY2023 and not on the FY2024 list; up 42 since FY2024.
99	Sumter Electric Cooperative, Inc. Top agencies DOJ (Department of Justice)	$3,921,913	0.1%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2023 and not on the FY2024 list; up 73 since FY2024.
100	Bristol Bay Native Corporation Through SES Energy Services LLC Top agencies Army (Department of the Army)	$3,900,000	0.1%	Rank history: not on the FY2021–FY2024 lists; new.

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100 of 1,347 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 221

Code	Net obligations	Largest contractor
2211 Electric Power Generation, Transmission and Distribution	$1,942,115,220	American Centrifuge Operating, LLC
2213 Water, Sewage and Other Systems	$1,043,116,658	American Water Works Company Inc.
2212 Natural Gas Distribution	$297,700,265	Tokyo Gas Co.,Ltd.

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 $3.42 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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 2025 ran Oct 1, 2024 – Sep 30, 2025. 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 FY2024. "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 FY2024 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 221 contractors in FY2025?

1. American Water Works Company Inc. ($208M), 2. American Centrifuge Operating, LLC ($198M), 3. Foreign Utility Consolidated Reporting ($177M), 4. Dominion Energy, Inc. ($162M), 5. American States Water Company ($139M), 6. Doyon Utilities, LLC ($117M), 7. City Light & Power FTC LLC ($116M), 8. Exelon Corporation ($104M), 9. Constellation Newenergy, Inc. ($104M), 10. WGL Holdings Inc. ($79.2M).

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