Ko-One Energy Service Co.,Ltd
Seoul
- UEI
- QE17XHAAKEL3
- CAGE
- 1L71F
- Primary NAICS
- 211130 Natural Gas Extraction
- SAM.gov registration
- Active through
Company facts
- FY2025 rankings
-
Its parent company, SK C&C Co. Ltd., ranks:
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- SAM.gov registration date
- Physical address
- 3165 Nambusunhwan-ro, Gangnam-gu, Seoul, South Korea
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | $646,200 |
| FY2025 | $632,529 |
| FY2024 | $62,977 |
| FY2023 | $499,595 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of the Army | $646,200 |
Contract awards
| Award | Agency | Obligated | Awarded |
|---|---|---|---|
| Utility gas at 39 detachment | RCO Yongsan 411th CSB | $3,000 | |
| Utility gas at k-16 | RCO Yongsan 411th CSB | $146,000 | |
| Utility gas | RCO Yongsan 411th CSB | $165,000 | |
| Utility gas | RCO Yongsan 411th CSB | $7,200 | |
| Utility gas | RCO Yongsan 411th CSB | $325,000 |
Latest 5 listed here. See the rest on GovTribe.
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About the company
Ko-One Energy Service Co., Ltd., a Seoul-based subsidiary of SK Inc.'s Defense Business Department Division, supplies liquefied natural gas to U.S. Army installations in South Korea as a prime contractor under two single-award Indefinite Delivery Vehicle contracts with the Department of the Army Installation Management Command Pacific Region, competing on an unrestricted, full-and-open basis with no set-aside designations. The company is a for-profit entity registered in the System for Award Management since November 2010 and operates exclusively in utility gas distribution (PSC code: Utilities–Gas; NAICS 486210: Natural Gas Distribution) under firm fixed-price delivery orders.
Ko-One's federal footprint is wholly concentrated with a single customer: the Department of the Army Installation Management Command Pacific Region accounts for all 40 awards and $37 million in combined potential value. The company holds two parent IDVs, both awarded December 1, 2022, and running through November 30, 2032. The larger IDV (W91QVN23D0004) covers natural gas supply to K-16 Army installation with a ceiling of $3.74 million and has generated eight delivery orders totaling approximately $1.8 million. The second IDV (W91QVN23D0006) supports 39 Detachment in Gyeonggi Province with a ceiling of $77,341.40 and has generated seven delivery orders totaling approximately $30 thousand. Representative recent delivery orders include a $581,000 order for K-16 natural gas supply (awarded December 1, 2024; completion August 31, 2025), a $325,000 order for utility gas across installations (awarded November 1, 2025; completion January 31, 2026), and a $148,700 order for K-16 natural gas (awarded March 1, 2026; completion October 31, 2026). Two additional legacy IDVs (W91QVN13D0011 and W91QVN07D0024) remain active, collectively generating 21 task orders worth approximately $8.7 million, though these vehicles are nearing exhaustion.
Activity has declined from five awards in 2022 to an average of three per year over 2024–2026, with only two awards facing ultimate completion inside the next twenty-four months (combined potential value $152 thousand). Ko-One operates as a sole-source provider under SOFA Article VI provisions governing utilities at U.S. military facilities and holds authority to modify liquefied natural gas consumer rates for its assigned facilities. All performance occurs in South Korea. The company's federal engagement is narrowly specialized: it functions as a captive energy supplier to a fixed military installation footprint with no subcontract relationships, no vehicle diversity, and no cross-agency customer exposure.
Quick answers
Is Ko-One Energy Service Co.,Ltd registered in SAM.gov?
Yes. Ko-One Energy Service Co.,Ltd's SAM.gov registration is active through March 18, 2027.
How much has Ko-One Energy Service Co.,Ltd received in federal contracts?
Federal contracts obligated $632,529 to Ko-One Energy Service Co.,Ltd in fiscal year 2025 and $1,841,301 in fiscal years 2023 through 2027.
How does Ko-One Energy Service Co.,Ltd rank among federal contractors?
Ko-One Energy Service Co.,Ltd's parent company, SK C&C Co. Ltd., ranked #44 in NAICS 2212 and #52 in PSC S111 in FY2025.
What is Ko-One Energy Service Co.,Ltd's most recent federal award?
Ko-One Energy Service Co.,Ltd's most recent federal contract award is Utility gas at 39 detachment (W91QVN26FA351), from RCO Yongsan 411th CSB, on May 1, 2026.
On GovTribe
See Ko-One Energy Service Co.,Ltd's full federal record
- Federal contract awards
- IDV awards
- Funding analysis by agency, NAICS and set-aside
- Similar vendors