The Sadara Chemical Project is the world’s largest chemical complex ever built in a single phase. With 26 integrated world-scale manufacturing plants that will produce more than 3 million tons of high-value-added chemical products every year, 

The chemicals complex will be the first large-scale project to be constructed in a single phase. Sadara Chemical awarded an engineering, procurement and construction (EPC) contract for the main mixed feed cracker to Daelim of South Korea in July 2011. The contract is valued at $920.3m. The flexible cracker will break the naphtha and ethane feedstock, in order to produce approximately 3mtpa of chemical products and plastics. Daelim is also reported to be the lowest bidder, against Samsung Engineering, for building parts of the other production units at the Sadara complex. They include analine, methylene di-para phenylene isocyanate (MDI), mononitrobenzene (MNB), toluene di-isocyanate (TDI), formaline and dinitrotoluene (DNT) units. Fluor was awarded a $2bn EPCM contract in August 2011 for developing all the offsite work and utilities at the site. The scope of work will include development of associated infrastructure and pipework arrangements to allow the construction of the complex.

ABB was selected as the main automation contractor (MAC) for the Sadara chemicals complex in 2011. It also received a contract in April 2014 to deliver shift operations management software solution eSOMS for the complex. Global Engineering and Construction Group, a unit of Foster Wheeler, was awarded an EPCM contract in February 2012 for a propylene oxide unit. The contract is an extension to the FEED contract awarded in 2008. In June 2012, Jacobs Engineering won an EPCM contract for three polyethylene units. Scope of work includes construction management, engineering support, procurement and project services support. Tecnicas Reunidas won an EPC contract to develop the chem-III project as part of the chemical complex in July 2012. It will provide detailed engineering and procurement services for six product plants, as well as auxiliary and control facilities. Maire Tecnimont was awarded an EPC contract to build a manufacturing plant at the complex.Production from the first unit of the complex, Solution Polyethylene, started in December 2015. All the units are expected to be on-line by 2017. In February 2016, Metso awarded a contract to provide a range of valve solutions, including automated control and on/off valves, emergency shut-down valves, as well as ball and butterfly valves with intelligent safety solenoid technology.

The Jubail integrated chemical complex will be owned and operated by Sadara Chemical Company, a joint venture between The Dow Chemical Company (Dow) and the state oil firm Saudi Aramco.