10 largest refineries in the world

The global oil refining industry plays a crucial role in meeting the world’s energy needs by transforming crude oil into fuel and other essential products. A nation that is an oil producer lacking a functional refinery will rely heavily on imported petroleum, which will have a negative impact on its economy. 

However, over the years, technological innovation and investment have driven the rise of massive, integrated refining complexes capable of processing hundreds of thousands of barrels of crude each day. 

In this article, Tribune Online explores the top 10 refineries in the world, ranked by capacity and global significance. 

1. Jamnagar Refinery (Reliance Industries) — India

Located in Gujarat, India, the Jamnagar Refinery is the largest single-site refinery complex in the world, owned by Reliance Industries Limited. It has a combined capacity of about 1.24 million barrels per day (bpd) and serves as a global hub for petroleum exports. The facility is known for its integration with petrochemicals and advanced automation.

2. Paraguaná Refining Complex — Venezuela

The Paraguaná Refining Complex, operated by PDVSA, comprises three major refineries: Amuay, Cardón, and Bajo Grande, all located on Venezuela’s northwest coast. With a combined capacity of roughly 955,000 bpd, it is considered the world’s second-largest refinery complex, just after Jamnagar Refinery(India). Despite operational challenges, it remains a significant player in global refining capacity.

3. Ruwais Refinery (ADNOC) — United Arab Emirates

The Ruwais Refinery, managed by Abu Dhabi National Oil Company (ADNOC), is one of the largest refineries in the Middle East. The complex processes around 922,000 bpd of crude oil, with ongoing expansion projects to boost capacity beyond one million barrels. It plays a key role in producing fuel and petrochemical products for export.

4. Ulsan Refinery (SK Energy) — South Korea

South Korea’s Ulsan Refinery, operated by SK Energy, ranks among the largest refineries in Asia with an estimated capacity of 840,000 bpd. It produces a wide range of petroleum products for both domestic use and export across the Asia-Pacific. The refinery’s technological sophistication and efficiency make it a regional refining leader.

5. Yeosu Refinery (GS Caltex) — South Korea

The Yeosu Refinery, owned by GS Caltex, is another powerhouse in South Korea’s refining industry. It capacity ranges between 730,000 and 840,000 bpd, depending on the unit configuration. The refinery is notable for its deep integration with petrochemical production, helping meet South Korea’s strong demand for energy and industrial feedstock.

6. Onsan Refinery (S-Oil Corporation) — South Korea

Operated by S-Oil Corporation, the Onsan Refinery in Ulsan is capable of processing approximately  669,000 bpd. It is among the most advanced refineries in Asia, equipped with hydrocracking and desulphurization units that allow it to produce high-quality fuels and petrochemicals while maintaining environmental compliance.

7. Dangote Refinery — Nigeria

Africa’s largest refinery, the Dangote Petroleum Refinery, is located in Lekki, Lagos, Nigeria. Built by the Dangote Group, it has an initial capacity of 650,000 bpd and aims to expand to 1.4 million bpd, potentially making it the world’s biggest single-train refinery. The refinery is expected to transform Nigeria from a fuel importer to a net exporter.

8.  Galveston Bay Refinery (Marathon Petroleum) — United States

The Galveston Bay Refinery, located in Texas and operated by Marathon Petroleum, is one of the largest refineries in North America with a processing capacity of 631,000 bpd. It produces gasoline, diesel, jet fuel, and other petroleum products for both domestic and export markets, serving as a backbone of the U.S. energy supply chain.

9.  Ras Tanura Refinery (Saudi Aramco) — Saudi Arabia

The Ras Tanura Refinery, operated by Saudi Aramco, is one of the oldest and largest refineries in the Middle East. With a capacity of about 550,000 bpd, it plays a crucial role in processing crude oil from Saudi Arabia’s massive reserves into finished products. The site continues to undergo upgrades to maintain its competitiveness.

10. Zhenhai Refining & Chemical Complex (Sinopec) — China

China’s Zhenhai Refining and Chemical Complex, owned by Sinopec, stands among the largest integrated refining and petrochemical plants in Asia. located in Ningbo, Zhejiang Province, the complex handles roughly 540,000 bpd of crude and is a key contributor to China’s refined fuel and chemical production.