Top 100 Contractors in PSC S111: Gas Services, FY2025

Name: Top 100 Contractors in PSC S111: Gas Services, 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 51% of FY2025 PSC S111 contract dollars

Contract obligations: $235,638,764 Net of deobligations, by contracts coded PSC S111
Contractors: 129 Parent companies with an obligation
Largest contractor: NRG Energy, Inc. $21 million, 7.9% 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	NRG Energy, Inc. 3 awardees, including NRG Business Marketing LLC and Direct Energy Business LLC Top agencies VA (Department of Veterans Affairs) GSA (General Services Administration) DOJ (Department of Justice)	$20,950,696	7.9%	Rank history: #44 in FY2021, #6 in FY2022 and not on the FY2023–FY2024 lists; up 135 since FY2024.
2	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	6.9%	Rank history: #30 in FY2021, #35 in FY2022, #40 in FY2023 and #23 in FY2024; up 21 since FY2024.
3	Foreign Utility Consolidated Reporting Top agencies Army (Department of the Army)	$15,746,911	5.9%	Rank history: #6 in FY2021, #7 in FY2022, #6 in FY2023 and #6 in FY2024; up 3 since FY2024.
4	Enstar Natural Gas Company, LLC Top agencies USAF (Department of the Air Force) DOI (Department of the Interior)	$14,783,923	5.6%	Rank history: not on the FY2021–FY2023 lists and #14 in FY2024; up 10 since FY2024.
5	WGL Holdings Inc. 2 awardees, including Washington Gas Light Company and WGL Energy Services, Inc. Top agencies DOT (Department of Transportation) Smithsonian (Smithsonian Institution) NARA (National Archives and Records Administration)	$13,827,273	5.2%	Rank history: #1 in FY2021, #2 in FY2022, #1 in FY2023 and #5 in FY2024; unchanged since FY2024.
6	Cobb Electric Membership Corporation 3 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)	$13,141,824	5.0%	Rank history: #18 in FY2021, #26 in FY2022, #10 in FY2023 and #7 in FY2024; up 1 since FY2024.
7	Samchully Co.,Ltd. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$10,730,953	4.0%	Rank history: #17 in FY2021, #10 in FY2022, #8 in FY2023 and #8 in FY2024; up 1 since FY2024.
8	Omega Pipeline Company, LLC Top agencies Army (Department of the Army)	$9,467,516	3.6%	Rank history: #4 in FY2021, #9 in FY2022, #9 in FY2023 and #11 in FY2024; up 3 since FY2024.
9	Buyo Gas Co.,Ltd. 2 awardees, including Buyo Ekika Gas Co., Ltd. Top agencies USAF (Department of the Air Force)	$9,191,042	3.5%	Rank history: #8 in FY2021, #5 in FY2022, #5 in FY2023 and #4 in FY2024; down 5 since FY2024.
10	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	3.4%	Rank history: not on the FY2021–FY2023 lists and #38 in FY2024; up 28 since FY2024.
11	Tokyo Gas Co.,Ltd. Top agencies Navy (Department of the Navy)	$9,035,078	3.4%	Rank history: not on the FY2021 list, #1 in FY2022, #2 in FY2023 and #2 in FY2024; down 9 since FY2024.
12	Tiger Natural Gas Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) DOJ (Department of Justice)	$7,498,388	2.8%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2024; down 3 since FY2024.
13	One Gas, Inc. 4 awardees Top agencies Army (Department of the Army) DOJ (Department of Justice) NARA (National Archives and Records Administration)	$7,430,090	2.8%	Rank history: #15 in FY2021, #16 in FY2022, #14 in FY2023 and #10 in FY2024; down 3 since FY2024.
14	The Southern Company 5 awardees, including Southern Company Gas, Virginia Natural Gas, Inc. and Southstar Energy Services LLC Top agencies GSA (General Services Administration) NASA (National Aeronautics and Space Administration) HHS (Department of Health and Human Services)	$5,944,604	2.2%	Rank history: #12 in FY2021, #18 in FY2022, #12 in FY2023 and #12 in FY2024; down 2 since FY2024.
15	Dominion Energy, Inc. 5 awardees, including Dominion Energy South Carolina, Inc., Hope Gas, Inc. and Questar Gas Company Top agencies DOJ (Department of Justice) Army (Department of the Army) Treasury (Department of the Treasury)	$5,536,293	2.1%	Rank history: #19 in FY2021, #22 in FY2022, #16 in FY2023 and #18 in FY2024; up 3 since FY2024.
16	Constellation Newenergy - Gas Division, LLC Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice) VA (Department of Veterans Affairs)	$5,328,598	2.0%	Rank history: #36 in FY2021, #3 in FY2022, #56 in FY2023 and #26 in FY2024; up 10 since FY2024.
17	Mansfield Power & Gas LLC Top agencies VA (Department of Veterans Affairs) GSA (General Services Administration) DOJ (Department of Justice)	$4,721,193	1.8%	Rank history: not on the FY2021–FY2023 lists and #57 in FY2024; up 40 since FY2024.
18	Duke Energy Corporation 2 awardees, including Piedmont Natural Gas Company, Inc. and Duke Energy Progress, LLC Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) Navy (Department of the Navy)	$4,119,546	1.6%	Rank history: #52 in FY2021, #28 in FY2022, #18 in FY2023 and #15 in FY2024; down 3 since FY2024.
19	Liberty Utilities (Peach State Natural Gas) Corp. Top agencies Army (Department of the Army)	$3,483,507	1.3%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2024; down 2 since FY2024.
20	Sage Energy Trading LLC Top agencies DOE (Department of Energy) VA (Department of Veterans Affairs) DOJ (Department of Justice)	$2,775,024	1.0%	Rank history: #10 in FY2021, #13 in FY2022, #13 in FY2023 and #13 in FY2024; down 7 since FY2024.
21	Centerpoint Energy, Inc. 2 awardees, including Nextera Energy Services Gas, LLC and Vectren LLC Top agencies VA (Department of Veterans Affairs) USAF (Department of the Air Force) DOJ (Department of Justice)	$2,377,081	0.9%	Rank history: #16 in FY2021, #17 in FY2022, #22 in FY2023 and #34 in FY2024; up 13 since FY2024.
22	Exelon Corporation 2 awardees, including Baltimore Gas and Electric Company and Peco Energy Company Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy)	$2,203,907	0.8%	Rank history: not on the FY2021–FY2022 lists, #36 in FY2023 and #21 in FY2024; down 1 since FY2024.
23	Hanjin Heavy Industries & Construction Holdings Co. Ltd. Through Daeryun E&S Co., Ltd. Top agencies Army (Department of the Army)	$2,063,841	0.8%	Rank history: #20 in FY2021, #29 in FY2022, #31 in FY2023 and #39 in FY2024; up 16 since FY2024.
24	Nisource Inc. 4 awardees, including Columbia Gas of Virginia, Inc., Columbia Gas of Pennsylvania Inc. and Columbia Gas of Kentucky, Inc. Top agencies DOJ (Department of Justice) Smithsonian (Smithsonian Institution) HHS (Department of Health and Human Services)	$1,738,552	0.7%	Rank history: not on the FY2021–FY2023 lists and #32 in FY2024; up 8 since FY2024.
25	National Grid USA Service Company, Inc. Top agencies DOJ (Department of Justice) DOT (Department of Transportation) NARA (National Archives and Records Administration)	$1,627,370	0.6%	Rank history: not on the FY2021–FY2023 lists and #43 in FY2024; up 18 since FY2024.
26	PS Energy Group, Inc. Top agencies DOJ (Department of Justice)	$1,611,506	0.6%	Rank history: #26 in FY2021, #24 in FY2022, #29 in FY2023 and #31 in FY2024; up 5 since FY2024.
27	Nippo Corporation Top agencies USAF (Department of the Air Force)	$1,578,236	0.6%	Rank history: not on the FY2021–FY2024 lists; new.
28	Colonial Energy Inc Top agencies VA (Department of Veterans Affairs) GSA (General Services Administration) NASA (National Aeronautics and Space Administration)	$1,548,005	0.6%	Rank history: not on the FY2021–FY2023 lists and #30 in FY2024; up 2 since FY2024.
29	Atmos Energy Corporation Top agencies USAF (Department of the Air Force) DOJ (Department of Justice) Treasury (Department of the Treasury)	$1,529,626	0.6%	Rank history: not on the FY2021 list, #20 in FY2022, #21 in FY2023 and #28 in FY2024; down 1 since FY2024.
30	Yeongnam Energy Service Co., Ltd. Top agencies Army (Department of the Army)	$1,223,971	0.5%	Rank history: #37 in FY2021 and not on the FY2022–FY2024 lists; returned.
31	DTE Gas Company Through DTE Energy Company Top agencies DOJ (Department of Justice) Army (Department of the Army) NARA (National Archives and Records Administration)	$1,223,437	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
32	UGI Corporation 3 awardees, including UGI Energy Services, LLC, UGI Utilities Inc. and Amerigas Propane, L.P. Top agencies DOJ (Department of Justice) VA (Department of Veterans Affairs) NASA (National Aeronautics and Space Administration)	$1,098,877	0.4%	Rank history: not on the FY2021 list, #100 in FY2022, #33 in FY2023 and #25 in FY2024; down 7 since FY2024.
33	Xpress Natural Gas LLC Top agencies VA (Department of Veterans Affairs)	$1,042,868	0.4%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2024; up 9 since FY2024.
34	West Coast Gas Company, Inc. Top agencies DOJ (Department of Justice)	$1,030,832	0.4%	Rank history: #34 in FY2021, #38 in FY2022, #28 in FY2023 and #55 in FY2024; up 21 since FY2024.
35	Spire Alabama Inc. Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice) Army (Department of the Army)	$941,118	0.4%	Rank history: not on the FY2021–FY2023 lists and #61 in FY2024; up 26 since FY2024.
36	Sprague Operating Resources LLC Top agencies Army (Department of the Army) Treasury (Department of the Treasury)	$904,150	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
37	Daesung Energy Co.,Ltd. Top agencies Army (Department of the Army)	$900,802	0.3%	Rank history: #64 in FY2021 and not on the FY2022–FY2024 lists; returned.
38	MDU Resources Group, Inc. 4 awardees, including Cascade Natural Gas Corp and Montana Dakota Utilities Co Top agencies DOI (Department of the Interior) EPA (Environmental Protection Agency) HHS (Department of Health and Human Services)	$897,878	0.3%	Rank history: #57 in FY2021, #50 in FY2022, #50 in FY2023 and #53 in FY2024; up 15 since FY2024.
39	Toro Partners II, LP Top agencies NASA (National Aeronautics and Space Administration)	$857,300	0.3%	Rank history: not on the FY2021–FY2023 lists and #91 in FY2024; up 52 since FY2024.
40	Transparent Energy LLC Top agencies VA (Department of Veterans Affairs)	$767,531	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
41	Southern California Gas Company Top agencies DOJ (Department of Justice) NARA (National Archives and Records Administration) DCMA (Defense Contract Management Agency)	$759,560	0.3%	Rank history: not on the FY2021–FY2023 lists and #56 in FY2024; up 15 since FY2024.
42	SAN Diego Gas & Electric Company Top agencies DOT (Department of Transportation) DOJ (Department of Justice)	$757,308	0.3%	Rank history: #22 in FY2021, #30 in FY2022, #32 in FY2023 and #41 in FY2024; down 1 since FY2024.
43	City of Clarksville Top agencies Army (Department of the Army)	$745,470	0.3%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023 and #27 in FY2024; down 16 since FY2024.
44	Nextera Energy Inc. Through Pivotal Utility Holdings Inc. Top agencies NASA (National Aeronautics and Space Administration)	$697,849	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
45	Air BP Sales Romania S.R.L. 2 awardees, including BP Energy Company and IGI Resources Inc. Top agencies NASA (National Aeronautics and Space Administration) VA (Department of Veterans Affairs)	$660,395	0.2%	Rank history: not on the FY2021–FY2022 lists, #90 in FY2023 and #66 in FY2024; up 21 since FY2024.
46	City of Philadelphia 2 awardees Top agencies Treasury (Department of the Treasury) DOI (Department of the Interior) NARA (National Archives and Records Administration)	$653,936	0.2%	Rank history: #23 in FY2021, #4 in FY2022, #44 in FY2023 and #50 in FY2024; up 4 since FY2024.
47	Empire Natural Gas Corporation Top agencies VA (Department of Veterans Affairs)	$636,853	0.2%	Rank history: #81 in FY2021, #78 in FY2022, #60 in FY2023 and #48 in FY2024; up 1 since FY2024.
48	Centerpoint Energy Resources Corp. 4 awardees, including Indiana Gas Company, Inc. Top agencies DOJ (Department of Justice) NASA (National Aeronautics and Space Administration) Navy (Department of the Navy)	$635,415	0.2%	Rank history: not on the FY2021–FY2023 lists and #58 in FY2024; up 10 since FY2024.
49	KO-One Energy Service Co. Ltd Top agencies Army (Department of the Army)	$632,529	0.2%	Rank history: #45 in FY2021, #32 in FY2022, #27 in FY2023 and #33 in FY2024; down 16 since FY2024.
50	Interconn Resources LLC Top agencies NASA (National Aeronautics and Space Administration)	$522,486	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
51	Ameren Corporation 3 awardees, including Ameren Services Company and Ameren Illinois Company Top agencies DOJ (Department of Justice)	$469,240	0.2%	Rank history: #62 in FY2021, #66 in FY2022, #75 in FY2023 and #86 in FY2024; up 35 since FY2024.
52	Northwest Natural Holding Company Through Northwest Natural Gas Co Top agencies DOJ (Department of Justice) DOE (Department of Energy) HHS (Department of Health and Human Services)	$464,844	0.2%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2023 and #75 in FY2024; up 23 since FY2024.
53	Black Hills Service Company LLC 3 awardees, including Black Hills Wyoming Gas, LLC and Black Hills Utility Holdings Inc. Top agencies DOI (Department of the Interior) Army (Department of the Army) HHS (Department of Health and Human Services)	$456,851	0.2%	Rank history: not on the FY2021–FY2023 lists and #88 in FY2024; up 35 since FY2024.
54	Carbonbetter, LLC Top agencies GSA (General Services Administration)	$438,282	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
55	Public Service Electric and Gas Company Top agencies DOJ (Department of Justice)	$430,999	0.2%	Rank history: not on the FY2021–FY2022 lists, #49 in FY2023 and #82 in FY2024; up 27 since FY2024.
56	Kentucky Frontier Gas, Llc. Top agencies DOJ (Department of Justice)	$392,639	0.1%	Rank history: #69 in FY2021, #67 in FY2022, #65 in FY2023 and #76 in FY2024; up 20 since FY2024.
57	Mountaineer Gas Co Top agencies DOJ (Department of Justice) DOL (Department of Labor)	$362,435	0.1%	Rank history: #72 in FY2021, not on the FY2022–FY2023 lists and #77 in FY2024; up 20 since FY2024.
58	Pickens County Natural Gas District Top agencies DOJ (Department of Justice)	$356,932	0.1%	Rank history: not on the FY2021 list, #37 in FY2022, #80 in FY2023 and #72 in FY2024; up 14 since FY2024.
59	Mountain V Oil & Gas, Inc. Top agencies DOJ (Department of Justice)	$356,293	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
60	Entergy Louisiana LLC Top agencies DHS (Department of Homeland Security)	$334,915	0.1%	Rank history: not on the FY2021–FY2023 lists and #51 in FY2024; down 9 since FY2024.
61	New Jersey Resources Corp Through New Jersey Natural Gas Company Top agencies Navy (Department of the Navy) DOJ (Department of Justice)	$334,272	0.1%	Rank history: #38 in FY2021, #44 in FY2022, #45 in FY2023 and #44 in FY2024; down 17 since FY2024.
62	Seoul City Gas Co.,Ltd. Top agencies Army (Department of the Army)	$333,380	0.1%	Rank history: #55 in FY2021, #60 in FY2022, not on the FY2023 list and #87 in FY2024; up 25 since FY2024.
63	Welch Gas Cooperative Association Top agencies DOJ (Department of Justice)	$319,929	0.1%	Rank history: #71 in FY2021, #72 in FY2022, #72 in FY2023 and #68 in FY2024; up 5 since FY2024.
64	Locem Construction Co., Ltd. Top agencies USAF (Department of the Air Force)	$311,450	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
65	Vectren Energy Delivery of Ohio, LLC Top agencies USAF (Department of the Air Force)	$310,331	0.1%	Rank history: not on the FY2021–FY2024 lists; up 36 since FY2024.
66	UNS Energy Corporation Through Central Hudson Gas & Electric Corporation Top agencies NARA (National Archives and Records Administration)	$308,858	0.1%	Rank history: not on the FY2021–FY2023 lists and #80 in FY2024; up 14 since FY2024.
67	The Gas Company, LLC Top agencies DOJ (Department of Justice)	$287,827	0.1%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2024; down 48 since FY2024.
68	Southern Company Gas Top agencies GSA (General Services Administration)	$284,733	0.1%	Rank history: not on the FY2021 list, #76 in FY2022, #83 in FY2023 and #74 in FY2024; up 6 since FY2024.
69	Summit Utilities Oklahoma, Inc. Top agencies DOJ (Department of Justice)	$277,303	0.1%	Rank history: not on the FY2021–FY2023 lists and #67 in FY2024; down 2 since FY2024.
70	Natural Energy Utility Corp Top agencies DOJ (Department of Justice)	$259,103	0.1%	Rank history: #59 in FY2021, not on the FY2022 list, #88 in FY2023 and not on the FY2024 list; returned.
71	South Jersey Gas Co Top agencies DOJ (Department of Justice)	$248,763	0.1%	Rank history: not on the FY2021–FY2023 lists and #96 in FY2024; up 25 since FY2024.
72	FPL Group Inc. Through Florida Power & Light Company Top agencies NASA (National Aeronautics and Space Administration)	$246,111	0.1%	Rank history: #9 in FY2021, not on the FY2022 list, #48 in FY2023 and #78 in FY2024; up 6 since FY2024.
73	Novec Energy Solutions Inc. Top agencies AFRH (Armed Forces Retirement Home) GSA (General Services Administration)	$237,468	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
74	Delta Natural Gas Co Inc. Top agencies DOJ (Department of Justice)	$235,763	0.1%	Rank history: #50 in FY2021, #83 in FY2022 and not on the FY2023–FY2024 lists; up 31 since FY2024.
75	Pacific Gas and Electric Company Top agencies DOJ (Department of Justice) NASA (National Aeronautics and Space Administration) CNCS (Corporation for National and Community Service)	$206,268	0.1%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2024; down 72 since FY2024.
76	Xcel Energy Inc. Through Public Service Company of Colorado Top agencies Treasury (Department of the Treasury) NARA (National Archives and Records Administration)	$202,902	0.1%	Rank history: not on the FY2021–FY2024 lists; up 28 since FY2024.
77	Standard Petroleum Logistics Inc Top agencies Smithsonian (Smithsonian Institution)	$192,000	0.1%	Rank history: not on the FY2021–FY2023 lists and #94 in FY2024; up 17 since FY2024.
78	WEC Energy Group Inc. 2 awardees, including Minnesota Energy Resources Corporation and Wisconsin Gas LLC Top agencies DOJ (Department of Justice)	$186,225	0.1%	Rank history: not on the FY2021–FY2024 lists; up 65 since FY2024.
79	Essential Utilities, Inc. Through Peoples Natural Gas Company LLC Top agencies DOJ (Department of Justice) DOE (Department of Energy)	$174,798	0.1%	Rank history: #82 in FY2021, #71 in FY2022, #55 in FY2023 and #79 in FY2024; unchanged since FY2024.
80	Yesco Co.,Ltd Top agencies Army (Department of the Army)	$165,867	0.1%	Rank history: #41 in FY2021, #61 in FY2022, #52 in FY2023 and not on the FY2024 list; up 34 since FY2024.
81	Illinois Power Marketing Company, LLC Top agencies DOJ (Department of Justice)	$149,386	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
82	Pike Natural Gas Co Top agencies DOE (Department of Energy)	$149,000	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
83	Keyspan Gas East Corporation Top agencies Treasury (Department of the Treasury)	$126,104	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
84	National Fuel Gas Co Through National Fuel Gas Distribution Corp Top agencies DOJ (Department of Justice)	$124,457	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
85	Commercial Energy of Montana Inc. Top agencies HHS (Department of Health and Human Services)	$123,400	<0.1%	Rank history: #87 in FY2021, not on the FY2022–FY2023 lists and #99 in FY2024; up 14 since FY2024.
86	Kunsan City Gas Top agencies USAF (Department of the Air Force)	$115,428	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
87	OGE Energy Corp Through Arkansas Oklahoma Gas Corporation Top agencies DOE (Department of Energy)	$109,147	<0.1%	Rank history: not on the FY2021 list, #46 in FY2022 and not on the FY2023–FY2024 lists; returned.
88	Nextera Energy Services Georgia, LLC Top agencies DHS (Department of Homeland Security)	$108,345	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
89	City of Independence Top agencies NARA (National Archives and Records Administration)	$106,000	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 22 since FY2024.
90	Kyungnam Energy Co.,Ltd Top agencies Navy (Department of the Navy)	$104,222	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 54 since FY2024.
91	The Southeast Alabama Gas District Top agencies Army (Department of the Army)	$94,024	<0.1%	Rank history: #90 in FY2021, #97 in FY2022, not on the FY2023 list and #95 in FY2024; up 4 since FY2024.
92	The Navajo Nation Tribal Government Through Navajo Tribal Utility Authority Top agencies DOI (Department of the Interior)	$92,942	<0.1%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023 and not on the FY2024 list; returned.
93	Southwest Gas Corporation Top agencies DOJ (Department of Justice) Navy (Department of the Navy) DOI (Department of the Interior)	$92,265	<0.1%	Rank history: not on the FY2021–FY2023 lists and #69 in FY2024; down 24 since FY2024.
94	City of Las Cruces Top agencies NASA (National Aeronautics and Space Administration)	$90,640	<0.1%	Rank history: #78 in FY2021, #82 in FY2022, #89 in FY2023 and #73 in FY2024; down 21 since FY2024.
95	Merrimac Petroleum, Inc. Top agencies Navy (Department of the Navy)	$88,238	<0.1%	Rank history: not on the FY2021–FY2023 lists and #83 in FY2024; down 12 since FY2024.
96	Northwestern Energy Group, Inc. 2 awardees, including Northwestern Corp Top agencies DOI (Department of the Interior) HHS (Department of Health and Human Services)	$77,005	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
97	Avista Corporation Top agencies USAF (Department of the Air Force) DOI (Department of the Interior)	$59,218	<0.1%	Rank history: not on the FY2021–FY2023 lists and #97 in FY2024; unchanged since FY2024.
98	Berkshire Hathaway Inc. Through Mid American Energy Company Top agencies DOI (Department of the Interior)	$53,778	<0.1%	Rank history: not on the FY2021 list, #85 in FY2022 and not on the FY2023–FY2024 lists; returned.
99	Arrowhead Transfer, Inc. 2 awardees Top agencies DOT (Department of Transportation)	$52,361	<0.1%	Rank history: #91 in FY2021, #81 in FY2022, #100 in FY2023 and not on the FY2024 list; returned.
100	Paula F Price Enterprises LLC Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$51,283	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.

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100 of 129 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 $265 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. 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 PSC S111 contractors in FY2025?

1. NRG Energy, Inc. ($21M), 2. United Energy Corporation ($18.2M), 3. Foreign Utility Consolidated Reporting ($15.7M), 4. Enstar Natural Gas Company, LLC ($14.8M), 5. WGL Holdings Inc. ($13.8M), 6. Cobb Electric Membership Corporation ($13.1M), 7. Samchully Co.,Ltd. ($10.7M), 8. Omega Pipeline Company, LLC ($9.47M), 9. Buyo Gas Co.,Ltd. ($9.19M), 10. Teco Energy Inc. ($9.11M).

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