The combined annual operating profit of South Korea’s four major refiners stood at approximately KRW 1.58 trillion in 2024, a sharp decline to nearly one-third of the KRW 4.47 trillion recorded in 2023.
Looking back over the past year, all four companies were in the red in the wake of the economic slowdown that began in earnest in the second quarter and the plunge in oil prices in the third quarter, before rebounding in the fourth quarter on the back of a recovery driven by winter heating demand.


Graphic & Table Creation=Korea Financial Times / Data Source=Each company
GS Caltex Leads the Industry in Profitability ... S-OIL Invests in Petrochemical Expansion
GS Caltex recorded the highest operating profit among its peers, posting KRW 548 billion. The company’s lubricant business has consistently delivered strong margins, standing out from competitors. While rivals in the sector maintain an average operating margin of around 15%, GS Caltex surpassed 25%. This success is attributed to the company’s strategic focus on high-value automotive lubricant finished products.S-OIL recorded the highest operating margin (1.3%) among the four major refiners. Although it was the only company in the sector to post a deficit in its refining operations, its relatively strong performance in the struggling petrochemical sector helped offset losses. It was the only one of the four to post a loss in its refining business, but it offset this with relatively solid profitability in petrochemicals, where all were struggling.
S-Oil plans to start the Shahine Project in Ulsan in 2026, investing KRW 9 trillion to build a large-scale petrochemical complex. It is expected that the project will disrupt the domestic petrochemical landscape, leveraging the raw material prices and technological competitiveness of its parent company, Saudi Aramco. S-OIL plans to nearly double the proportion of its revenue derived from petrochemicals, increasing it from the current 12-13%.

* Excluding consolidation adjustments such as HD Hyundai Oil Bank's internal transactions / Data Source=Each company
이미지 확대보기HD Hyundai Oilbank and SK Innovation Face Challenges
HD Hyundai Oilbank struggled due to setbacks in its petrochemical business. Its joint venture with Lotte Chemical, HD Hyundai Chemical, posted an operating loss of KRW 70 billion.Meanwhile, SK Innovation delivered relatively stable results in its traditional oil-based businesses. However, it suffered a substantial KRW 1.4 trillion deficit in its battery and battery materials divisions. The company did alleviate some financial pressure through its Q4 merger with E&S.
Outlook for 2025: Cautious Optimism Amid Global Uncertainty
The industry outlook for this year is expected to be similar to last year. Global economic sluggishness and stable international oil prices are anticipated to continue.There is, however, a variable: former U.S. President Donald Trump. The domestic industry holds mixed feelings of “half expectation, half concern.”
If the Trump administration enforces a policy of strengthening tariffs, it could have a positive impact on the domestic refining industry. The increase in the proportion of expensive U.S. refineries could raise margins for oil products overall. However, uncertainty surrounding implementation and potential side effect of a global trade reduction make it difficult to gauge the actual impact on the industry.
Gwak Horyung (horr@fntimes.com)




















![동작구청장 경쟁 여론…민주당 류삼영·국힘 박일하 선두 [6·3 지방선거]](https://cfnimage.commutil.kr/phpwas/restmb_setimgmake.php?pp=006&w=69&h=45&m=5&simg=20260410181713071270b372994c951245313551.jpg&nmt=18)

!["쉬는 대신 배운다"…장민영 행장, 기업은행식 4.9일제 '안착' [은행 4.9일제 확산]](https://cfnimage.commutil.kr/phpwas/restmb_setimgmake.php?pp=006&w=69&h=45&m=5&simg=202604091621360025001b5a2213792115218260.jpg&nmt=18)


![송파구 ‘헬리오시티’ 33평, 4.5억 떨어진 26.9억원에 거래 [하락아파트]](https://cfnimage.commutil.kr/phpwas/restmb_setimgmake.php?pp=006&w=69&h=45&m=5&simg=2025042118171704322e41d7fc6c2183101242202.jpg&nmt=18)

![기후·탄소금융 240억 달러 시장이 열린다 [리차드윤의 탄소배출권 이야기①]](https://cfnimage.commutil.kr/phpwas/restmb_setimgmake.php?pp=006&w=69&h=45&m=5&simg=20260410131418039220c1c16452b012411124362.jpg&nmt=18)

![[그래픽 뉴스] 트럼프의 ‘타코 한 입’에 흔들린 시장의 비밀](https://cfnimage.commutil.kr/phpwas/restmb_setimgmake.php?pp=006&w=298&h=298&m=1&simg=202604031646576130de68fcbb3512411124362_0.jpg&nmt=18)
![[그래픽 뉴스] 청년정책 5년 계획, 무엇이 달라지나?](https://cfnimage.commutil.kr/phpwas/restmb_setimgmake.php?pp=006&w=298&h=298&m=1&simg=202603301556498218de68fcbb3512411124362_0.jpg&nmt=18)
![[카드뉴스] KT&G, ‘CDP’ 기후변화·수자원 관리 부문 우수기업 선정](https://cfnimage.commutil.kr/phpwas/restmb_setimgmake.php?pp=006&w=298&h=298&m=1&simg=202603241415423015de68fcbb3512411124362_0.png&nmt=18)
![[그래픽 뉴스] “AI가 소프트웨어를 무너뜨린다? 사스포칼립스의 진실”](https://cfnimage.commutil.kr/phpwas/restmb_setimgmake.php?pp=006&w=298&h=298&m=1&simg=2026030416113601805de68fcbb3512411124362.jpg&nmt=18)
![[그래픽 뉴스] “돈로주의 & 먼로주의: 미국 외교정책이 경제·안보에 미치는 영향”](https://cfnimage.commutil.kr/phpwas/restmb_setimgmake.php?pp=006&w=298&h=298&m=1&simg=202602261105472649de68fcbb3512411124362_0.jpg&nmt=18)

![[카드뉴스] KT&G, ‘CDP’ 기후변화·수자원 관리 부문 우수기업 선정](https://cfnimage.commutil.kr/phpwas/restmb_setimgmake.php?pp=006&w=89&h=45&m=1&simg=202603241415423015de68fcbb3512411124362_0.png&nmt=18)
![[AD] 현대차, 글로벌 안전평가 최고등급 달성 기념 EV 특별 프로모션](https://cfnimage.commutil.kr/phpwas/restmb_setimgmake.php?pp=006&w=89&h=45&m=1&simg=20260106160647050337492587736121125197123.jpg&nmt=18)
![[AD] 현대차 ‘모베드’, CES 2026 로보틱스 부문 최고혁신상 수상](https://cfnimage.commutil.kr/phpwas/restmb_setimgmake.php?pp=006&w=89&h=45&m=1&simg=20260105103413003717492587736121125197123.jpg&nmt=18)
![[AD] 기아 ‘PV5’, 최대 적재중량 1회 충전 693km 주행 기네스 신기록](https://cfnimage.commutil.kr/phpwas/restmb_setimgmake.php?pp=006&w=89&h=45&m=1&simg=20251105115215067287492587736121125197123.jpg&nmt=18)
![[카드뉴스] KT&G, 제조 부문 명장 선발, 기술 리더 중심 본원적 경쟁력 강화](https://cfnimage.commutil.kr/phpwas/restmb_setimgmake.php?pp=006&w=89&h=45&m=1&simg=202509241142445913de68fcbb3512411124362_0.png&nmt=18)



