Naga substation expansion completed


The Naga substation expansion project of the National Grid Corporation of the Philippines (NGCP) can now accommodate additional power supplies from generators, after the Henry Sy-led grid operator recently completed the project.

NGCP explained that the project involves the installation of one unit of 100-megavolt ampere (MVA) transformer, nine 230 kilovolt (KV) and three 69 KV power circuit breakers and corresponding substation accessories.

The new installation is planned to increase the substation’s existing capacity and add to its current 100-MVA transformer. The grid operator also confirmed the energization of the 100-MVA expansion.

This project, which cost the operator approximately P703.5 million, is expected to accommodate additional power supplies from generators.

According to NGCP, the project was a response to meet the growing power demands in the Bicol region.

The expansion is also part of the Luzon Substation Project 1, which will reinforce the island’s total substation capacity, particularly the substations in Bantay, Bauang, Cabanatuan, Cruz na Daan, Laoag and Biñan.

NGCP’s compliance to the N-1 or single-outage contingency is also a major factor in the substation’s expansion. This Philippine Grid Code requirement refers to the ability of the grid to withstand the loss of a major system component with minimal disruption to the grid.

The project will address the N-1 requirement for the Naga substation, which caters to the power requirements of the region.

“The Bicol region has been steadily increasing its power demand, partly due to its development as an ecotourism destination. In response to that, NGCP saw the need to reinforce its transmission facilities to accommodate both supply and demand growth.

Naga Substation’s expansion is crucial to maintain the reliability of the grid, and in effect, sustain the region’s progress,” NGCP said in a statement.

Madelaine B. Miraflor


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