2009–present: Projects relating to Hermosa-Duhat-Balintawak transmission line Due to the turnover of power grid operations, maintenance, expansion, and eminent domain from
National Transmission Corporation (TransCo) to NGCP on January 15, 2009, only four lands and structures, and two ROWs for the lattice towers were
acquired and designated, and under the original TransCo plan and component of the relocation project that are currently in use (towers 255, 256, 266, and 267 (with the last two are using
National Power Corporation (NAPOCOR/NPC)-era and original TransCo designation towers 264 and 265)) as stated on the fieldwork report of Hermosa-Balintawak Transmission Line Relocation as part of their permission granted from
NLEX Corporation, and
San Simon,
Apalit,
Calumpit, and
Pulilan local government units (LGUs) to run parallel with San Simon-Pulilan section of
North Luzon Expressway (NLEX). As a result, NGCP continued the project by acquiring and designating lands and 3 ROWs for the 58 steel poles (poles 228–254, 257–265, 268–289, with some of them are NAPOCOR/NPC-era poles or secondhand where they should be supposedly be retired and not used within the project under its original TransCo plan), under NGCP's revised plan and component of the project, and on locations and alignment or route different from the original TransCo plan of the relocation project from November 2009 until the completion of the relocated line segment on September 2011 when the reference numbers and Danger with ownership information signs were placed on the structures, after the transmission project was delayed many times due to the repair of damaged facilities on
Bicol Region resulting from 2006 typhoons, the turnover from TransCo to NGCP in January 2009, and typhoons
Ondoy and
Pepeng which flooded the
Apalit,
Calumpit and
Pulilan rice paddies, and
Candaba Swamp on where the right-of-way (ROW) of a viaduct section of the relocation project passes through, still with the permission from NLEX Corporation and the said LGUs to continue the project. In July 2010, NGCP constructed 3 new and higher steel poles (381–383) due to the construction of Plaridel Bypass Road. NGCP continued the relocation of the transmission line's
San Fernando section that started in 2001 under
National Power Corporation (NAPOCOR/NPC) on February 2011 with steel pole 167 at the side of
Jose Abad Santos Avenue (JASA) using NAPOCOR/NPC-era pole 275 that was originally located along
MacArthur Highway in
Calumpit,
Bulacan to alleviate heavy traffic along the avenue due to the presence of its electric poles standing on the highway itself, and to pave the way for the expansion of some segments of the avenue particularly at Barangay Dolores with it also marked the removal of steel poles and lattice towers of original alignment of San Simon-
Pulilan section of the transmission line along MacArthur Highway and Pulilan Regional Road, following the already original completed purpose of relocating poles within the
lahar radius of
Mount Pinatubo from 2001 to 2003. Along the poles of the relocation project, four of them were placed at the southbound side of avenue before
North Luzon Expressway (NLEX) San Fernando Exit due to Laus Group of Companies Chairman Levy Laus opposed to place the steel poles within the property of his automotive business as they carry 230,000 volts of electricity and their relocation closer to their business offices and residences will pose a threat to the health and safety of employees, customers, visitors and others who stay around the area on a daily basis. The relocated transmission line segment along NLEX was completed on March 25, 2011, and the Hermosa-Balintawak Transmission Line Relocation project overall in September 2011. Relocation of San Fernando section of the line, however, was delayed many times due to ROW issues. With the construction of poles between current pole 167 and Mexico–Hermosa Transmission Line, they are now the highest to be used on the line since then, beating the asymmetrical steel pole 515A stated on next paragraphs. Several structures were painted starting with lattice towers from early 2010s to 2021, then followed by steel poles in 2015 (including those acquired, designated and built by, and belonging to a plan and component of NGCP and its predecessor TransCo) with aluminum paint to protect them from corrosion and extend their service lifespan. From 2016 to 2020, pole 515A was added by NGCP between 515 and the line's terminus through a connection to a portal tower in Balintawak Substation for the intersection of San Jose-Balintawak line 3 and Hermosa-Duhat-Balintawak transmission lines with the said pole also serves as pole 1 of the former. The removed NAPOCOR/NPC-era steel poles by NGCP due to various projects done on the transmission line that were not used on the line itself were either stored on its various substations or used on other power lines, such as the Hermosa-Malolos-San Jose, Mexico-Hermosa, Hermosa-Limay, and Currimao-Laoag transmission lines.
2011–2024: Mindanao-Visayas Interconnection In January 2024, the Mindanao-Visayas Interconnection Project (MVIP) completed and became fully operational which finally uniting the Philippine power grid. It was made on a simultaneous ceremonial switch-on in Manila, Cebu, and Lanao del Norte. President
Ferdinand "Bongbong" Marcos Jr. led the ceremony in
Malacañang Palace. “After a much-extended wait, I am pleased to finally see the energization of the 450-megawatt MVIP. It is the first time in the history of our nation that the three major power grids, those of: Luzon, Visayas, and Mindanao—are now physically connected,” said Marcos in his speech. Among the components of the project is the 184 km submarine cable connecting the Mindanao and Visayas grids. According to the NGCP, efforts to establish this connection began in the 1980s when the government-owned
National Power Corporation (NAPOCOR/NPC) still operated, maintained, owned, and expanded the grid but were abandoned due to difficulties. Efforts to revive the connection began in 2011 when the NGCP began studying its viability. “The MVIP, which unites the Luzon, Visayas, and Mindanao grids, is identified as integral to economic development through the delivery of stable power transmission services and enabling of energy resource sharing,” said the MVIP.
2012–present: Projects relating to Sucat-Paco-Araneta-Balintawak transmission line Two new steel poles were added between poles 143 and 144 of the Sucat–Araneta segment of the line for its cut-in connection to Meralco Paco Substation in 2012. This cut-in connection to the said substation also made the transmission line from being a two-part to three-part power line. Due to the construction of
Skyway Stage 3, several steel poles were replaced and relocated or added newer poles between the existing structures. The newer steel poles were made of
porcelain discs (15) and 3 horizontal pole-mounted porcelain
insulator. Since the construction of Skyway Stage 3, the newer design is flag design with the deadend insulators (made of
polymer/porcelain). Several structures were painted (including those acquired, designated and built by, and belonging to a plan and component of NGCP) with aluminum paint to protect them from corrosion and extend their service lifespan.
2018–present: Expansion of the Philippine 500kV transmission network In 2018, NGCP started building 500kV lattice towers of Balsik-Marilao-San Jose segment of Balsik-Marilao-San Jose-Tayabas-Pagbilao and Castillejos-Hermosa 500kV transmission lines, marking the construction of 500kV lines not seen since the completion of Kadampat-San Manuel-San Jose line in 1999 when the government-owned
National Power Corporation (NAPOCOR/NPC) still owned, operated, maintained, and expanded the Philippine power grid and its related assets and facilities. It then followed by the construction of Mariveles-Hermosa transmission line in 2019. On March 30, 2022, NGCP energized the Mariveles-Hermosa transmission line after three years of construction, consisting of 136 lattice towers, that expands the existing capacity of the transmission facilities to accommodate more than 2,500MW of incoming generation from the Bataan Peninsula, including the GN Power Dinginin (GNPD) coal-fired power plant and the Mariveles Power Generation Corporation (MPGC). It is the first 500kV transmission line in the Philippines to have NGCP's own taller variant of the tower within the line, as well as the first to be completed under NGCP and after the privatization of the Philippine power grid operations, maintenance, and expansion on January 15, 2009. The line's completion and energization also marked the resumption of completing and energizing 500kV lines after 23 years since the Kadampat-San Manuel-San Jose line in 1999. On May 27, 2023, NGCP partially energized the Balsik-Marilao-San Jose segment of Balsik-Marilao-San Jose-Tayabas-Pagbilao 500kV transmission line that would strengthen transmission services and accommodate new bulk power generation from the Bataan area. It spans the provinces of Bulacan, Pampanga, and Bataan. However, there are right-of-way issues which delayed the full completion of the project as the July 2023
TRO was lifted through SC
Resolution dated February 28, 2024, promulgated on April 8, 2024. The restraining order stopped for 9 months construction along Towers 170-178 of the line's Marilao-Hermosa segment, affected by the expropriation case of
Century Properties' PHirst Park Homes. “This will enable us to complete the remaining portion of the HSJ,” the NGCP announced in May 2024. NGCP fully completed the Balsik-Marilao-San Jose segment of the four-part Balsik-Marilao-San Jose-Tayabas-Pagbilao 500kV transmission line after six years of construction on June 23, 2024, making the said power line segment now at full 8,000MW capacity as well as expanding the 500kV backbone from Central to Southern Luzon. The transmission line segment, along with the Mariveles-Hermosa line that was earlier completed and energized in March 2022 during the
administration of President Rodrigo Duterte, were both inaugurated on July 12, 2024, by Duterte's successor
Bongbong Marcos. With the completion of the said power line segment, the Balsik-Marilao-San Jose-Tayabas-Pagbilao line is now the longest 500kV power line in the country at 552.4 km in length, surpassing the Kadampat-San Manuel-San Jose line (commissioned in March 1999) at 225 km.
Cebu-Negros-Panay Backbone project On April 8, 2024, Marcos Jr. inaugurated the 230 kV Cebu-Negros-Panay Backbone project with its simultaneous ceremonial energization at the NGCP Bacolod Substation in
Negros Occidental. The Cebu-Negros-Panay Backbone, which includes the Negros-Panay Interconnection Project Line 2, was built in three stages, the last completed on March 27, 2024. It complements the Amlan-Samboan submarine cable, which is connects Cebu and Negros islands. CNP Project Stage 1 added a new 230kV transmission line from Bacolod to
Enrique B. Magalona, Negros Occidental, while Stage 2 upgraded the Cebu Substation into 230kV level.
2021–present: Cebu-Bohol Interconnection project On 2022, the Energy Regulatory Commission (ERC) cleared the proposed 230kV Cebu-Bohol Interconnection Project of the NGCP. The ERC also approved Option 1 among the two options of NGCP's proposed Cebu-Bohol Interconnection project in a 47-page decision. The approved option involves an outright double circuit 230kV submarine cable with a 600 MW capacity with a provision of a third circuit between
Cebu, a 230kV overhead transmission line, and a 230kV switchyard in the existing Corella substation, and it will have an estimated cost of ₱19.61 billion. The Cebu-Bohol Interconnection project is aimed to help prevent overloading of the present 138kV Leyte-Bohol submarine cable which only having a capacity of 90 MW. The groundbreaking of the project began on December 9, 2021. Currently, works on the Cebu-Bohol Interconnection project is still ongoing. The layout of the submarine cable, that will link
Argao and
Maribojoc, stands out nearly 100 percent completed, with NGCP currently finalizing the road
wayleave acquisition and the
expropriation proceedings of the project, and out of the 74 overhead transmission (OHT) towers that will span the remaining 18 kilometers to the Corella SS, 28 have been already constructed. Completion of the Cebu-Bohol interconnection project was targeted by the end of 2024. The Cebu-Bohol Interconnection Project was partially energized (Line 1) on July 16, 2024 and fully energized (Line 2) on September 27, 2024, with a total power of 1,200 MW. == Franchise law and concession agreement ==