OCI History


OCI Company Ltd., OCI Solar Power’s parent company, was founded in Seoul, South Korea. The global company’s portfolio spans more than five decades in the fields of renewable energy, fine chemicals, and insulation materials.


OCI Chemical Corporation produced natural soda ash, sodium percarbonate, and hydrogen peroxide with North American facilities in Green River, Wyoming; Decatur, Alabama; and Columbus, Mississippi.


OCI Company Ltd. launches commercial production of 9-nine grade polysilicon and later offers 10-nine and 11-nine grade polysilicon as a primary raw material used by more than 50 leading PV solar companies around the world. In 2011, OCI Company Ltd. became the world’s No. 1 polysilicon supplier, the raw material for solar cells, with a total annual production capacity of 42,000 tons. It remains one of the top four largest manufacturers of polysilicon in the world.


OCI Solar Power LLC was founded in 2011. It was the first company to bring utility scale solar projects to Texas. In 2015, OCI opened the $130 million Mission Solar Energy manufacturing plant in San Antonio, Texas, with capability of manufacturing 200 MW of N-Type and P-Type PV cells and modules for utility customers. As of August 31, 2017, there are 950 MW that have been installed and are operating in the ERCOT market, with 450 developed, designed, procured, and constructed by OCISP. Three of our four Texas-based projects are 100% Buy American Act complaint, and one of our projects, Alamo 6, is the largest dual-axis solar farm in the United States.