PNOC EC also owns a private commercial port – the Energy Supply Base (ESB) located in Mabini, Batangas, which offers berthing, cargo handling, storage and warehousing facilities to its clients.

In 2008, PNOC EC accommodated a total of 232 local and foreign vessels and handled 219 thousand metric tons of local cargoes and 155 thousand metric tons of foreign cargoes. The base was also able to provide a total of 6.4 million liters of fuel to its clients. ESB was also able to lease out a total of 57,618 square meters of warehouse, office space, pipe rack and open yard space to its customers. These values translate to a total of PhP 316 million in gross revenues for ESB, a significant increase from its revenue of PhP 225 million in 2007.

Marketing efforts are being intensified to increase the number of clients from both the energy-related industry and the commercial sector.