Marilao Substation is a 500kV substation located in Marilao, Central Luzon, Philippines.

The Marilao Substation project’s construction has begun in 2021. The works are expected to be commissioned in 2022.


Marilao Substation project, which is a new substation, will be operated by National Grid Corporation of the Philippines.

The designed voltage level of the substation is 500/230/13.8kV and the operating voltage level is 500/230/13.8kV.

The step-in voltage of the project is 500kV and the step-out voltage is 13.8kV. Upon completion, the substation will have a capacity of 2000MVA.

Marilao Substation project development status

The development of the Marilao Substation project was approved by Energy Regulatory Commission (ERC) in 2021. The project is expected to be commissioned in 2022. Approximately $146.26m was financed by the authorities to undertake the construction works of the project.

About National Grid Corporation of the Philippines

National Grid Corporation of the Philippines (NGCP) is a power transmission corporation that conducts development, expansion, and operation and maintenance of transmission system and sub-transmission system that transmits electricity. The corporation builds, operates and maintains power grid to provide electricity transmission services. It also operates metering facilities, high-voltage transmission lines, towers, and substations. The corporation offers operation and maintenance, system operation, and planning and engineering services. It has partnership with other energy industry companies. NGCP is headquartered in Quezon City, Quezon, the Philippines.


All publicly-announced T&D Line & Substation projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects is sourced through secondary information sources such as country specific utility players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.