From 1980s to today

Mobil and Esso continued to upgrade their refining capacities as well as add more downstream petrochemicals and lubricant facilities during the 1980s and 1990s.

By 1993, Mobil had built a US$200 million hydrocracker as well as a US$1.1 billion catalytic reformer and aromatics unit. That same year, Exxon Chemical also announced plans for a US$1 billion aromatics complex and a US$380 million hydroprocessing plant at Pulau Ayer Chawan (now Jurong Island).

In 1997, both Esso and Mobil announced plans for new crackers on their respective sites, and in 1999, the merger of Exxon Corporation and Mobil Corporation came about, resulting in combined ownership of all Singapore facilities under ExxonMobil.

With both companies owning complementary global assets and technology, ExxonMobil decided to build a single new state-of-the-art US$2 billion petrochemical plant on Jurong Island which would be fully integrated with existing refining and chemical operations at Jurong Island and Pioneer Road.

The Singapore Chemical Plant has since played a key role in supporting ExxonMobil's global manufacturing and supply network, supplying to more than 15 major markets. With this US$6.5 billion investment, ExxonMobil became the single-largest foreign manufacturing investor in Singapore.

In 2007, ExxonMobil decided to build a second world-scale steam cracker and associated derivative units to be fully integrated with the existing Singapore Refinery and Singapore Chemical Plant. Groundbreaking was held in November and start-up is expected in early 2011. When completed, the petrochemical complex will be Exxon Mobil Corporation's largest integrated chemical and refining site.

Today, ExxonMobil operates the largest network of Esso service stations in Singapore and is a major marketer of cylinder cooking gas to local homes. It also serves commercial markets with industrial, aviation and marine fuels and lubricants.