Domestic
SK E&S subsidiaries and branches
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- 26, Jong-ro, Jongno-gu, Seoul, Korea
- 02-2121-3114
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- 2148-567, Jaechel-ro (Geumho-dong), Gwangyang-si, Jeollanam-do, Korea
- 061-797-0700
City gas subsidiary companies
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- 3165, Nambusunhwan-ro (Daechi-dong), Gangnam-gu, Seoul, Korea
- 02-3410-8000
- Go to website
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- 513, Hwangryeong-daero (Namcheon-dong), Suyeong-gu, Busan, Korea
- 051-607-1234
- Go to website
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- 94, 1 Gongdan-ro, 6-gil (Gongdan-dong), Gumi-si, Gyeongsangbuk-do, Korea
- 054-460-6000
- Go to website
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- 208, Sotaeji-ro (Changpo-dong), Buk-gu, Pohang-si, Gyeongsangbuk-do, Korea
- 054-280-5114
- Go to website
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- 244, Sandan-ro (Songjeong-dong), Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, Korea
- 043-261-4114
- Go to website
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- 31, Jangseonbaegi-gil, Suncheon-si, Jeollanam-do, Korea
- 061-720-9000
- Go to website
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- 163, Sakju-ro (Hupyeong-dong), Chuncheon-si, Gangwon-do, Korea
- 033-258-8800
- Go to website
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- 80, Seokam-ro, 3-gil, Iksan-si, Jeollabuk-do, Korea
- 063-830-8500
- Go to website
Power generation
subsidiary companies
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- 544-4, Bongam-ri, Paju-eup, Paju-si, Korea
- 1544-0009
- Go to website
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- 366 Oeryong-ri, buknae-myeong, Yeoju-si, Geyonggi-do
- 02-2121-3028
- Go to website
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- 29, Wirye-daero 4-gil, Hanam-si, Gyeonggi-do, Korea
- 02-6477-7799
- Go to website
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- Hanam CHP Plant, 77, Jojeong-daero, Hanam-si, Gyeonggi-do, Korea
- 02-6477-7824
- Go to website
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- 83, Sandan 1-ro, Jeonggwan-eup, Gijang-gun, Busan, Korea
- 051-722-7900
- Go to website
LNG
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- 21-104, Yeongbo-ri, Ocheon-myeon, Boryeong-si, Chungcheongnam-do, Korea
- 070-4504-7608
- Go to website
New renewable
subsidiary companies
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Hydrogen
subsidiary companies
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- 415, Bongsu-daero, Seo-gu, Incheon, Korea
- 02-6329-3500
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- 33 Jongno, Jongno-gu, Seoul
- 02-2121-3556
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- #303, 7, Terminal-gil, Boryeong-si, Chungcheongnam-do
- 02-2121-8088
