[1] TOR is authorized by law to operate both as a refiner of crude oil and seller of petroleum products.

In 1977, as part of the first phase of TOR's expansion and modernization program, the Crude Distillation Unit (CDU) was revamped to 45,000 barrels per stream day.

In 2002, as the second phase of the expansion and modernization program, a Residue Fluid Catalytic Cracking (RFCC) unit of capacity 14,000 barrels per stream day was commissioned.

However, TOR was built to process lower grade crudes and cannot refine oil from the new local fields unless significant investment was made.

The aim of the rehabilitation is to improve distribution of liquefied petroleum gas, and increase its supply from 28,000 to 34,000 barrels (4,500 to 5,400 m3) per day.

[5] In 2002, the Minister of Energy announced that the Government of Ghana had negotiated with Samsung Corporation of South Korea provide 230 million dollars for the funding of expansion works at the refinery.

The debt of 1 billion cedis had accrued due to Government of Ghana's subsidy on petroleum products.