Top 100 Contractors in PSC S1: Utilities, Jul 2025–Jun 2026

Name: Top 100 Contractors in PSC S1: Utilities, Jul 2025–Jun 2026
Creator: GovTribe

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 43% of PSC S1 contract dollars from July 2025 through June 2026

Contract obligations: $3,069,416,933 Net of deobligations, by contracts coded PSC S1 or a code under it
Contractors: 754 Parent companies with an obligation
Largest contractor: L3Harris Technologies, Inc. $247 million, 7.7% 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	L3Harris Technologies, Inc. Through Harris Corporation Top agencies DOT (Department of Transportation)	$247,364,303	7.7%	Rank history: #4 in FY2021, #5 in FY2022, #3 in FY2023, #3 in FY2024 and #3 in FY2025; up 3 since Jul 2024–Jun 2025.
2	American Water Works Company Inc. 4 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)	$219,386,912	6.8%	Rank history: #2 in FY2021, #1 in FY2022, #2 in FY2023, #1 in FY2024 and #2 in FY2025; down 1 since Jul 2024–Jun 2025.
3	Dominion Resources Inc. 11 awardees, including Virginia Electric and Power Company, Dominion Privatization Texas, LLC and Dominion Privatization Virginia, LLC Top agencies DOJ (Department of Justice) Army (Department of the Army) Navy (Department of the Navy)	$184,325,878	5.7%	Rank history: #6 in FY2021, #4 in FY2022, #5 in FY2023, #6 in FY2024 and #4 in FY2025; up 5 since Jul 2024–Jun 2025.
4	Foreign Utility Consolidated Reporting Top agencies Army (Department of the Army)	$142,731,565	4.4%	Rank history: #1 in FY2021, #2 in FY2022, #1 in FY2023, #2 in FY2024 and #1 in FY2025; down 2 since Jul 2024–Jun 2025.
5	Georgia Power Company 10 awardees, including Atlanta Gas Light Company, Mississippi Power Co and Alabama Power Company Top agencies DHS (Department of Homeland Security) NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$112,463,504	3.5%	Rank history: #15 in FY2021, #10 in FY2022, #16 in FY2023, #15 in FY2024 and #13 in FY2025; up 6 since Jul 2024–Jun 2025.
6	Amber Infrastructure LLC 6 awardees, including City Light & Power Aberdeen, LLC, City Light & Power Jblm LLC and City Light & Power, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$112,332,189	3.5%	Rank history: not on the FY2021–FY2023 lists, #8 in FY2024 and #6 in FY2025; unchanged since Jul 2024–Jun 2025.
7	Potomac Electric Power Co Top agencies HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration) Treasury (Department of the Treasury)	$104,357,250	3.3%	Rank history: not on the FY2021 list, #83 in FY2022, not on the FY2023 list, #5 in FY2024 and #9 in FY2025; down 4 since Jul 2024–Jun 2025.
8	WGL Energy Services Inc. 2 awardees, including Washington Gas Light Company Top agencies GSA (General Services Administration) HHS (Department of Health and Human Services) Army (Department of the Army)	$93,581,953	2.9%	Rank history: #8 in FY2021, #9 in FY2022, #6 in FY2023, #9 in FY2024 and #10 in FY2025; up 4 since Jul 2024–Jun 2025.
9	Constellation Newenergy Inc 8 awardees, including Baltimore Gas & Electric Company, Peco Energy Company and Commonwealth Edison Co Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security) DOJ (Department of Justice)	$86,986,662	2.7%	Rank history: not on the FY2021–FY2023 lists, #29 in FY2024 and #7 in FY2025; unchanged since Jul 2024–Jun 2025.
10	Fort Bliss Water Services Company 6 awardees, including Old North Utility Services, Inc., American States Utility Services Inc. and Old Dominion Utility Services, Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$84,987,015	2.6%	Rank history: not on the FY2021 list, #86 in FY2022, #35 in FY2023, #7 in FY2024 and #8 in FY2025; down 5 since Jul 2024–Jun 2025.
11	Korea Electric Power Corporation Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$78,575,103	2.4%	Rank history: #36 in FY2021, not on the FY2022–FY2024 lists and #14 in FY2025; up 22 since Jul 2024–Jun 2025.
12	Doyon Utilities, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$63,830,486	2.0%	Rank history: #5 in FY2021, #6 in FY2022, #7 in FY2023, #4 in FY2024 and #5 in FY2025; down 5 since Jul 2024–Jun 2025.
13	Pacific Gas and Electric Company Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) DOI (Department of the Interior)	$58,089,299	1.8%	Rank history: not on the FY2021–FY2023 lists, #10 in FY2024 and #11 in FY2025; down 3 since Jul 2024–Jun 2025.
14	Keenan FT Detrick Energy LLC Top agencies Army (Department of the Army)	$53,392,567	1.7%	Rank history: #10 in FY2021, #12 in FY2022, #18 in FY2023, #14 in FY2024 and #15 in FY2025; up 8 since Jul 2024–Jun 2025.
15	AEP Energy Inc. Top agencies HHS (Department of Health and Human Services)	$52,740,637	1.6%	Rank history: not on the FY2021 list, #100 in FY2022, not on the FY2023 list, #59 in FY2024 and #12 in FY2025; up 8 since Jul 2024–Jun 2025.
16	Direct Energy Business LLC Top agencies GSA (General Services Administration) VA (Department of Veterans Affairs) DOJ (Department of Justice)	$50,600,259	1.6%	Rank history: not on the FY2021 list, #99 in FY2022, #71 in FY2023, #40 in FY2024 and #18 in FY2025; down 3 since Jul 2024–Jun 2025.
17	Black Hills Corporation 2 awardees, including Black Hills Service Company, LLC Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) DOI (Department of the Interior)	$44,848,330	1.4%	Rank history: not on the FY2021–FY2023 lists, #71 in FY2024 and #40 in FY2025; up 47 since Jul 2024–Jun 2025.
18	Vicinity Energy Inc. Top agencies VA (Department of Veterans Affairs)	$42,835,373	1.3%	Rank history: not on the FY2021–FY2024 lists and #16 in FY2025; up 130 since Jul 2024–Jun 2025.
19	Jacobs Government Services Company Through Ch2M Hill Constructors, Inc. Top agencies Army (Department of the Army)	$38,162,549	1.2%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023, #20 in FY2024 and #17 in FY2025; down 4 since Jul 2024–Jun 2025.
20	General Dynamics Corporation Through General Dynamics Information Technology, Inc. Top agencies DOT (Department of Transportation)	$35,304,070	1.1%	Rank history: #17 in FY2021, #50 in FY2022, #27 in FY2023, #17 in FY2024 and #22 in FY2025; down 3 since Jul 2024–Jun 2025.
21	Duke Energy Corporation 4 awardees, including Duke Energy Progress, LLC, Piedmont Natural Gas Company, Inc. and Duke Energy Ohio, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DOJ (Department of Justice)	$34,263,557	1.1%	Rank history: #30 in FY2021, #11 in FY2022, #11 in FY2023, #24 in FY2024 and #24 in FY2025; unchanged since Jul 2024–Jun 2025.
22	Consolidated Edison Inc. Through Consolidated Edison Company of New York, Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) SSA (Social Security Administration)	$29,804,308	0.9%	Rank history: not on the FY2021–FY2022 lists, #14 in FY2023, #45 in FY2024 and #28 in FY2025; up 16 since Jul 2024–Jun 2025.
23	Oklahoma City Water Utilities Trust Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$29,593,152	0.9%	Rank history: not on the FY2021 list, #51 in FY2022, #24 in FY2023, #18 in FY2024 and #20 in FY2025; up 230 since Jul 2024–Jun 2025.
24	Aqua Engineers Inc. Top agencies Army (Department of the Army)	$29,394,464	0.9%	Rank history: #14 in FY2021, #19 in FY2022, #21 in FY2023, #21 in FY2024 and #23 in FY2025; down 4 since Jul 2024–Jun 2025.
25	Puget Sound Energy Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy) DOI (Department of the Interior)	$26,362,359	0.8%	Rank history: not on the FY2021–FY2024 lists and #25 in FY2025; up 100 since Jul 2024–Jun 2025.
26	Oklahoma Gas and Electric Company Top agencies USAF (Department of the Air Force) DOJ (Department of Justice) GSA (General Services Administration)	$24,932,463	0.8%	Rank history: not on the FY2021–FY2023 lists, #56 in FY2024 and #33 in FY2025; down 10 since Jul 2024–Jun 2025.
27	Gulf Coast Electric Cooperative Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$24,717,063	0.8%	Rank history: #42 in FY2021, #3 in FY2022, #49 in FY2023, #69 in FY2024 and #50 in FY2025; up 45 since Jul 2024–Jun 2025.
28	Hawaiian Electric Company, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DOJ (Department of Justice)	$24,415,965	0.8%	Rank history: not on the FY2021–FY2023 lists, #64 in FY2024 and #51 in FY2025; up 27 since Jul 2024–Jun 2025.
29	Augusta-Richmond County Government Top agencies Army (Department of the Army)	$22,084,011	0.7%	Rank history: #39 in FY2021, #44 in FY2022, #64 in FY2023, #42 in FY2024 and #29 in FY2025; up 12 since Jul 2024–Jun 2025.
30	Sho-Me Power Electric Cooperative Top agencies Army (Department of the Army)	$21,572,454	0.7%	Rank history: #29 in FY2021, #36 in FY2022, #40 in FY2023, #33 in FY2024 and #36 in FY2025; up 7 since Jul 2024–Jun 2025.
31	Emerald Coast Utility Services Inc. Top agencies USAF (Department of the Air Force)	$21,064,102	0.7%	Rank history: #32 in FY2021, #35 in FY2022, #34 in FY2023, #32 in FY2024 and #34 in FY2025; down 2 since Jul 2024–Jun 2025.
32	United Energy Corporation Through United Energy Trading, LLC Top agencies GSA (General Services Administration) VA (Department of Veterans Affairs) NASA (National Aeronautics and Space Administration)	$20,752,032	0.6%	Rank history: not on the FY2021–FY2024 lists and #38 in FY2025; up 49 since Jul 2024–Jun 2025.
33	NRG Business Marketing LLC Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) Army (Department of the Army)	$20,172,593	0.6%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023, not on the FY2024 list and #26 in FY2025; down 7 since Jul 2024–Jun 2025.
34	Engie Resources LLC Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) SSA (Social Security Administration)	$18,528,084	0.6%	Rank history: #62 in FY2021, #18 in FY2022, #50 in FY2023, #28 in FY2024 and #21 in FY2025; down 9 since Jul 2024–Jun 2025.
35	National Grid USA Service Company, Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) DOT (Department of Transportation)	$17,812,627	0.6%	Rank history: not on the FY2021–FY2023 lists, #74 in FY2024 and not on the FY2025 list; up 45 since Jul 2024–Jun 2025.
36	RIO Grande Electric Cooperative, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$17,537,984	0.5%	Rank history: #18 in FY2021, #31 in FY2022, #38 in FY2023, #31 in FY2024 and #37 in FY2025; down 4 since Jul 2024–Jun 2025.
37	Chugach Electric Association, Inc. Top agencies USAF (Department of the Air Force) DOI (Department of the Interior)	$16,746,334	0.5%	Rank history: not on the FY2021–FY2022 lists, #42 in FY2023, #39 in FY2024 and #45 in FY2025; down 10 since Jul 2024–Jun 2025.
38	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)	$16,427,085	0.5%	Rank history: #16 in FY2021, #16 in FY2022, #12 in FY2023, #19 in FY2024 and #27 in FY2025; down 10 since Jul 2024–Jun 2025.
39	Choctawhatchee Electric Cooperative Inc. Top agencies USAF (Department of the Air Force)	$16,058,413	0.5%	Rank history: not on the FY2021–FY2023 lists, #48 in FY2024 and #43 in FY2025; up 3 since Jul 2024–Jun 2025.
40	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)	$15,790,640	0.5%	Rank history: #94 in FY2021, #79 in FY2022, #68 in FY2023, #79 in FY2024 and #48 in FY2025; up 33 since Jul 2024–Jun 2025.
41	Florida Power & Light Company Top agencies NASA (National Aeronautics and Space Administration) DOJ (Department of Justice) Army (Department of the Army)	$15,753,757	0.5%	Rank history: not on the FY2021–FY2023 lists, #38 in FY2024 and #42 in FY2025; up 3 since Jul 2024–Jun 2025.
42	Fort Riley Utility Services, Inc. Top agencies Army (Department of the Army)	$15,056,232	0.5%	Rank history: #28 in FY2021, #30 in FY2022, #29 in FY2023, #22 in FY2024 and #41 in FY2025; down 12 since Jul 2024–Jun 2025.
43	Base Utilities Inc. Top agencies USAF (Department of the Air Force)	$15,014,528	0.5%	Rank history: #33 in FY2021, #49 in FY2022, #47 in FY2023, #43 in FY2024 and #49 in FY2025; unchanged since Jul 2024–Jun 2025.
44	Canoochee Electric Membership Corp Top agencies Army (Department of the Army)	$14,597,765	0.5%	Rank history: #68 in FY2021, #78 in FY2022, #57 in FY2023, #46 in FY2024 and #46 in FY2025; up 2 since Jul 2024–Jun 2025.
45	Monongahela Power Company Top agencies DOJ (Department of Justice) Treasury (Department of the Treasury) HHS (Department of Health and Human Services)	$13,118,178	0.4%	Rank history: not on the FY2021–FY2023 lists, #50 in FY2024 and #52 in FY2025; up 4 since Jul 2024–Jun 2025.
46	American Water Enterprises, LLC Top agencies Army (Department of the Army)	$12,421,319	0.4%	Rank history: #82 in FY2021, #66 in FY2022, #44 in FY2023, #63 in FY2024 and #54 in FY2025; up 5 since Jul 2024–Jun 2025.
47	Washington Suburban Sanitary Commission Top agencies HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration) NARA (National Archives and Records Administration)	$12,329,356	0.4%	Rank history: #46 in FY2021, #40 in FY2022, #41 in FY2023, #34 in FY2024 and #35 in FY2025; down 2 since Jul 2024–Jun 2025.
48	Entergy Louisiana LLC Top agencies Army (Department of the Army) DOT (Department of Transportation) DOI (Department of the Interior)	$11,782,508	0.4%	Rank history: not on the FY2021–FY2023 lists, #49 in FY2024 and #53 in FY2025; up 5 since Jul 2024–Jun 2025.
49	Enspire Energy, LLC Top agencies GSA (General Services Administration) DOJ (Department of Justice) VA (Department of Veterans Affairs)	$11,165,023	0.3%	Rank history: #85 in FY2021, #88 in FY2022, #93 in FY2023, #83 in FY2024 and #93 in FY2025; up 58 since Jul 2024–Jun 2025.
50	Samchully Co.,Ltd. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$10,952,615	0.3%	Rank history: not on the FY2021 list, #60 in FY2022, #52 in FY2023, #65 in FY2024 and #57 in FY2025; up 4 since Jul 2024–Jun 2025.
51	County of Hardin Through Hardin County Water District NO. 1 Top agencies Army (Department of the Army)	$10,661,301	0.3%	Rank history: not on the FY2021–FY2023 lists, #93 in FY2024 and #31 in FY2025; down 17 since Jul 2024–Jun 2025.
52	Omega Pipeline Company, LLC Top agencies Army (Department of the Army)	$10,603,842	0.3%	Rank history: #50 in FY2021, #59 in FY2022, #61 in FY2023, #68 in FY2024 and #60 in FY2025; up 10 since Jul 2024–Jun 2025.
53	Firstenergy Corp. 6 awardees, including The Potomac Edison Co, Ohio Edison Company and Jersey Central Power & Light Co Top agencies Treasury (Department of the Treasury) HHS (Department of Health and Human Services) DOJ (Department of Justice)	$10,518,472	0.3%	Rank history: #21 in FY2021, #26 in FY2022, #22 in FY2023, #37 in FY2024 and #44 in FY2025; down 18 since Jul 2024–Jun 2025.
54	Enstar Natural Gas Company, LLC Top agencies USAF (Department of the Air Force) DOI (Department of the Interior)	$10,512,313	0.3%	Rank history: not on the FY2021–FY2023 lists, #77 in FY2024 and #47 in FY2025; down 15 since Jul 2024–Jun 2025.
55	Flint Electric Membership Corp Top agencies Army (Department of the Army)	$10,120,287	0.3%	Rank history: #73 in FY2021, #56 in FY2022, #70 in FY2023, #55 in FY2024 and #71 in FY2025; up 20 since Jul 2024–Jun 2025.
56	Tiger Natural Gas Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) DOJ (Department of Justice)	$9,910,472	0.3%	Rank history: not on the FY2021–FY2023 lists, #62 in FY2024 and #68 in FY2025; up 13 since Jul 2024–Jun 2025.
57	Central Coast Water Authority Top agencies USAF (Department of the Air Force)	$9,652,762	0.3%	Rank history: #60 in FY2021, #87 in FY2022, #67 in FY2023, #67 in FY2024 and #66 in FY2025; up 4 since Jul 2024–Jun 2025.
58	City of Aberdeen Top agencies Army (Department of the Army)	$9,340,028	0.3%	Rank history: #69 in FY2021, #82 in FY2022, #74 in FY2023, #54 in FY2024 and #70 in FY2025; up 2 since Jul 2024–Jun 2025.
59	Bay State Utility Services, LLC Top agencies USAF (Department of the Air Force)	$9,192,098	0.3%	Rank history: not on the FY2021–FY2024 lists and #75 in FY2025; new, not ranked in Jul 2024–Jun 2025.
60	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)	$9,143,923	0.3%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; up 94 since Jul 2024–Jun 2025.
61	Clear Lake City Water Authority Top agencies NASA (National Aeronautics and Space Administration)	$8,975,961	0.3%	Rank history: not on the FY2021–FY2025 lists; up 131 since Jul 2024–Jun 2025.
62	Brunswick Electric Membership Corporation Top agencies Army (Department of the Army)	$8,855,344	0.3%	Rank history: not on the FY2021–FY2023 lists, #73 in FY2024 and #64 in FY2025; up 5 since Jul 2024–Jun 2025.
63	Florida Governmental Utility Authority Top agencies USAF (Department of the Air Force)	$8,717,346	0.3%	Rank history: not on the FY2021–FY2024 lists and #65 in FY2025; up 8 since Jul 2024–Jun 2025.
64	Sandhills Utility Services, LLC Top agencies Army (Department of the Army)	$8,279,825	0.3%	Rank history: #22 in FY2021, #24 in FY2022, #23 in FY2023, #26 in FY2024 and #39 in FY2025; down 28 since Jul 2024–Jun 2025.
65	The Navajo Nation Tribal Government Through Navajo Tribal Utility Authority Top agencies HHS (Department of Health and Human Services) DOI (Department of the Interior)	$8,040,955	0.3%	Rank history: not on the FY2021–FY2022 lists, #63 in FY2023, #61 in FY2024 and #58 in FY2025; down 15 since Jul 2024–Jun 2025.
66	Ohio Valley Electrical Services, LLC Through Ohio Valley Electric Corporation Top agencies DOE (Department of Energy)	$7,495,000	0.2%	Rank history: not on the FY2021–FY2024 lists and #89 in FY2025; up 33 since Jul 2024–Jun 2025.
67	City of Wildwood City Hall Top agencies DOJ (Department of Justice)	$7,138,908	0.2%	Rank history: not on the FY2021–FY2024 lists and #87 in FY2025; up 31 since Jul 2024–Jun 2025.
68	City Public Services Board Top agencies USAF (Department of the Air Force)	$7,099,923	0.2%	Rank history: #57 in FY2021, #65 in FY2022, #77 in FY2023, #57 in FY2024 and #72 in FY2025; down 10 since Jul 2024–Jun 2025.
69	Centerpoint Energy Resources Corp. 4 awardees, including Nextera Energy Services Gas, LLC, Vectren Energy Delivery of Ohio, LLC and Indiana Gas Company, Inc. Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) DOJ (Department of Justice)	$7,013,963	0.2%	Rank history: not on the FY2021–FY2023 lists, #98 in FY2024 and not on the FY2025 list; up 25 since Jul 2024–Jun 2025.
70	Sage Energy Trading LLC Top agencies NASA (National Aeronautics and Space Administration) DOJ (Department of Justice) DOE (Department of Energy)	$6,862,102	0.2%	Rank history: not on the FY2021–FY2022 lists, #90 in FY2023, #76 in FY2024 and not on the FY2025 list; up 25 since Jul 2024–Jun 2025.
71	UNS Energy Corporation 3 awardees, including Tucson Electric Power Company, Uns Electric, Inc. and Central Hudson Gas & Electric Corporation Top agencies DOJ (Department of Justice) USAF (Department of the Air Force) IBWC (International Boundary and Water Commission U.S.-Mexico)	$6,781,582	0.2%	Rank history: not on the FY2021–FY2024 lists and #81 in FY2025; up 12 since Jul 2024–Jun 2025.
72	Verendrye Electric Cooperative Inc. Top agencies USAF (Department of the Air Force)	$6,649,824	0.2%	Rank history: #97 in FY2021, not on the FY2022 list, #97 in FY2023, #78 in FY2024 and #74 in FY2025; up 4 since Jul 2024–Jun 2025.
73	Southwest Gas Corporation Top agencies Army (Department of the Army) DOJ (Department of Justice) Navy (Department of the Navy)	$6,431,896	0.2%	Rank history: not on the FY2021–FY2025 lists; up 258 since Jul 2024–Jun 2025.
74	Nolin Rural Electric Cooperative Corporation Top agencies Army (Department of the Army)	$6,205,630	0.2%	Rank history: #80 in FY2021, #46 in FY2022, #43 in FY2023, #47 in FY2024 and #56 in FY2025; down 27 since Jul 2024–Jun 2025.
75	American Electric Power Company, Inc. Top agencies DOJ (Department of Justice) DOL (Department of Labor) HHS (Department of Health and Human Services)	$6,168,130	0.2%	Rank history: #25 in FY2021, #20 in FY2022, #10 in FY2023, #13 in FY2024 and #84 in FY2025; down 10 since Jul 2024–Jun 2025.
76	Firstenergy Pennsylvania Electric Company Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) DOE (Department of Energy)	$6,111,782	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
77	South Granville Water & Sewer Auth Top agencies DOJ (Department of Justice)	$5,806,262	0.2%	Rank history: not on the FY2021–FY2023 lists, #97 in FY2024 and #85 in FY2025; up 24 since Jul 2024–Jun 2025.
78	Dominion Energy South Carolina, Inc. Top agencies DOJ (Department of Justice) Army (Department of the Army) Navy (Department of the Navy)	$5,620,197	0.2%	Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; up 18 since Jul 2024–Jun 2025.
79	Laclede Electric Cooperative Top agencies Army (Department of the Army)	$5,609,093	0.2%	Rank history: #75 in FY2021, #81 in FY2022, #72 in FY2023, #90 in FY2024 and #83 in FY2025; up 3 since Jul 2024–Jun 2025.
80	Illinois Power Marketing Company, LLC Top agencies DOJ (Department of Justice) VA (Department of Veterans Affairs)	$5,433,679	0.2%	Rank history: not on the FY2021–FY2025 lists; up 75 since Jul 2024–Jun 2025.
81	Sumter Electric Cooperative, Inc. Top agencies DOJ (Department of Justice)	$5,199,390	0.2%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023, not on the FY2024 list and #99 in FY2025; up 46 since Jul 2024–Jun 2025.
82	ANCHOR-41 Construction LLC Top agencies VA (Department of Veterans Affairs)	$5,157,586	0.2%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; new, not ranked in Jul 2024–Jun 2025.
83	Freestate Electric Cooperative, Inc. Top agencies Army (Department of the Army)	$5,090,061	0.2%	Rank history: not on the FY2021–FY2022 lists, #78 in FY2023, #82 in FY2024 and #95 in FY2025; up 6 since Jul 2024–Jun 2025.
84	Riverbend Water Resources District Top agencies Army (Department of the Army)	$4,958,000	0.2%	Rank history: #84 in FY2021, #84 in FY2022, #76 in FY2023, #66 in FY2024 and #55 in FY2025; down 36 since Jul 2024–Jun 2025.
85	Southern Maryland Electric Cooperative, Inc. Top agencies Navy (Department of the Navy)	$4,811,916	0.1%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023, not on the FY2024 list and #78 in FY2025; up 5 since Jul 2024–Jun 2025.
86	Eversource Energy 2 awardees, including Eversource Energy Service Company and Nstar Electric Company Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice) NARA (National Archives and Records Administration)	$4,763,176	0.1%	Rank history: not on the FY2021–FY2025 lists; up 19 since Jul 2024–Jun 2025.
87	Tama City Hall Top agencies USAF (Department of the Air Force)	$4,748,901	0.1%	Rank history: not on the FY2021 list, #77 in FY2022, #88 in FY2023, #85 in FY2024 and #77 in FY2025; down 10 since Jul 2024–Jun 2025.
88	Pinnacle West Capital Corporation Through Arizona Public Service Company Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice) DOI (Department of the Interior)	$4,684,825	0.1%	Rank history: not on the FY2021–FY2022 lists, #30 in FY2023, #96 in FY2024 and #92 in FY2025; down 2 since Jul 2024–Jun 2025.
89	Antelope Valley East Kern Water Agency Top agencies USAF (Department of the Air Force)	$4,582,136	0.1%	Rank history: not on the FY2021–FY2023 lists, #100 in FY2024 and not on the FY2025 list; up 23 since Jul 2024–Jun 2025.
90	Pyeongtaek-Si Water and Sewage Business Place Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$4,469,229	0.1%	Rank history: #77 in FY2021, not on the FY2022–FY2024 lists and #82 in FY2025; down 2 since Jul 2024–Jun 2025.
91	Cobb Electric Membership Corporation 2 awardees, including Gas South, LLC Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) Treasury (Department of the Treasury)	$4,362,534	0.1%	Rank history: not on the FY2021–FY2022 lists, #62 in FY2023, #58 in FY2024 and #59 in FY2025; down 32 since Jul 2024–Jun 2025.
92	Memphis Light Gas & Water Top agencies Treasury (Department of the Treasury)	$4,346,111	0.1%	Rank history: not on the FY2021–FY2025 lists; up 26 since Jul 2024–Jun 2025.
93	OGE Energy Corp 2 awardees, including Arkansas Oklahoma Gas Corporation Top agencies USAF (Department of the Air Force) DOJ (Department of Justice) DOE (Department of Energy)	$4,142,452	0.1%	Rank history: #40 in FY2021, #37 in FY2022, #36 in FY2023, #27 in FY2024 and #96 in FY2025; down 6 since Jul 2024–Jun 2025.
94	Fayetteville Public Works Commission Top agencies Army (Department of the Army)	$4,141,624	0.1%	Rank history: not on the FY2021–FY2025 lists; up 25 since Jul 2024–Jun 2025.
95	Yazoo Valley Electric Power Association Top agencies DOJ (Department of Justice)	$4,139,830	0.1%	Rank history: not on the FY2021–FY2025 lists; up 28 since Jul 2024–Jun 2025.
96	Xcel Energy Inc. 4 awardees, including Public Service Company of Colorado, Southwestern Public Service Company and Northern States Power Company Top agencies Treasury (Department of the Treasury) DOE (Department of Energy) DOJ (Department of Justice)	$4,137,115	0.1%	Rank history: not on the FY2021–FY2025 lists; up 97 since Jul 2024–Jun 2025.
97	Nextera Energy Services Connecticut, LLC Top agencies VA (Department of Veterans Affairs) GSA (General Services Administration) DOJ (Department of Justice)	$4,046,649	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
98	Long Island Power Authority Top agencies DOT (Department of Transportation) Treasury (Department of the Treasury)	$4,021,373	0.1%	Rank history: not on the FY2021–FY2025 lists; up 31 since Jul 2024–Jun 2025.
99	Florida Keys Aqueduct Authority Top agencies Navy (Department of the Navy)	$3,970,848	0.1%	Rank history: not on the FY2021–FY2025 lists; up 3 since Jul 2024–Jun 2025.
100	Harnett, County of North Carolina Top agencies Army (Department of the Army)	$3,955,476	0.1%	Rank history: not on the FY2021–FY2025 lists; up 22 since Jul 2024–Jun 2025.

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100 of 754 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC S1

Code	Net obligations	Largest contractor
S112 Electric Services	$1,466,185,722	Dominion Resources Inc.
S114 Water Services	$614,109,977	American Water Works Company Inc.
S119 Other Utilities	$434,441,192	Dominion Resources Inc.
S111 Gas Services	$272,025,112	Georgia Power Company

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 $3.21 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.
Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
Rank changes compare with Jul 2024–Jun 2025. "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.
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 S1 contractors in Jul 2025–Jun 2026?

1. L3Harris Technologies, Inc. ($247M), 2. American Water Works Company Inc. ($219M), 3. Dominion Resources Inc. ($184M), 4. Foreign Utility Consolidated Reporting ($143M), 5. Georgia Power Company ($112M), 6. Amber Infrastructure LLC ($112M), 7. Potomac Electric Power Co ($104M), 8. WGL Energy Services Inc. ($93.6M), 9. Constellation Newenergy Inc ($87M), 10. Fort Bliss Water Services Company ($85M).

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