The passage of R.A. 8479 otherwise known as the "Downstream Oil Industry Deregulation Act of 1998" liberated and deregulated the country’s downstream oil industry to ensure a truly competitive market and an adequate and continuous supply of environmentally-clean and high-quality petroleum products. To attain the goals, the government continue to encourage the entry of new investors in the downstream oil industry.
Pursuant to RA 8479 the Department of Energy through the Oil Industry Management Bureau (DOE-OIMB) is mandated to monitor the refining, manufacturing and marketing processes of petroleum products to ensure that clean and safe technologies are applied. The following are the downstream oil activities being monitored by DOE-OIMB.
- Refining – crude oil processing, production, and/or improvement in the quality of petroleum products in conformance with the Philippine National Standards (PNS), the Clean Air Act, and other applicable laws and regulation.
- Fuel Bulk Marketing – the activities involve is the selling of petroleum products in wholesale through tank trucks, lorries, tankers, barges or pipelines, which may be imported or locally purchased.
- Petroleum Transport – transfer of petroleum products through tankers, barges, tank trucks, lorries, pipelines from one supply point to another or to end users.
- LPG Refilling and Marketing – activities of storage, refilling, distribution, and marketing of LPG.
- Retailing – selling of petroleum products in retail, generally directed to end users, through dispensing pumps in gasoline stations for the liquid fuels and auto-LPG and metal cylinders for LPG. This includes the establishment and operation of gasoline stations and LPG outlets.
- Terminalling - refers to the activity of leasing storage tanks to other industry players for a fee.
- Bunkering – refers to the activity of selling fuels for direct use by a marine vessel and delivered by a barge or smaller transport vessel.