It is also responsible for protecting the national government's interests by monitoring NGCP's compliance with the standards set by its concession agreement with NGCP, congressional franchise and other relevant laws, handle existing cases such as right-of-way (portion of a power line) and lands where the transmission structures stand acquired and designated, structures built, and other claims that were accrued prior to the turnover of operations and maintenance of the power grid to NGCP on January 15, 2009, divest remaining sub-transmission assets to technically and financially qualified electric distributors nationwide, and undertake the operations, maintenance, consultancy and other technical services for the Philippine Economic Zone Authority (PEZA) and Authority of the Freeport Area of Bataan (AFAB).

[2] In September 2004, Power Sector Assets and Liabilities Management (PSALM) received but rejected proposals from four groups with different offers for the TransCo contract that eventually led to a decision to conduct a public bidding.

On December 12, 2007, 2 consortia bid for a 25-year license to run the Philippine power grid – privatization of the management of TransCo: the consortium of Monte Oro Grid Resources Corp., comprising the State Grid Corporation of China, and Calaca High Power Corp., won in an auction conducted by the Power Sector Assets and Liabilities Management (PSALM) Corp. as it submitted the highest offer of $3.95 billion, for the right to operate TransCo for 25 years, outbidding San Miguel Energy, a unit of San Miguel Corporation (bid of $3.59 billion), Dutch firm TPG Aurora BV and Malaysia's TNB Prai Sdn Bhd.

[10] On June 8, 2018, the Department of Information and Communications Technology (DICT), NGCP, and TransCo signed an agreement on Friday for a national broadband plan that will help accelerate internet connectivity nationwide.

Under the agreement, the DICT will utilize TransCo's reserved optical fiber to distribute connectivity from Luzon to Mindanao using the submarine cables that will be laid down by Facebook from the United States to Asia.

The agreement plans to expand the internet connectivity in public places for free by building an additional 200,000 access points nationwide by 2022, DICT Officer-In-Charge Eliseo Rio said.

Executive Secretary Salvador Medialdea pointed out that, if indeed NGCP had violated the terms of its contract by profiting unduly from the operations of the power grid such as allowing telecommunications firms to mount their fiber optic cables on the transmission towers.

[14] Senator Sherwin "Win" Gatchalian said that he was advised by the president of TransCo that it was possible for China to shut down the Philippine electrical grid remotely "given the technological advancement right now in the telecommunications as well as in software.

In a letter to Energy Secretary Alfonso Cusi dated December 21, 2021, NASECORE said: “This failure had been repeatedly witnessed during the 2013 Super Typhoon Yolanda, Typhoon Ruby in 2014 and the earthquake of 2017 due to its apparent inadequate, weak and grossly unreliable transmission system that are easily felled by typhoons.” NASECORE President Pete Ilagan said this performance of NGCP is unacceptable and unfair to electric cooperatives and distribution utilities who bear the brunt of the blame from consumers for the grid operators’ weak and the unreliable transmission system.

The statement came after President Ferdinand Marcos Jr. and Sen. Raffy Tulfo’s meeting at the presidential palace on Monday during which the lawmaker expressed concerns about the issues hounding NGCP, including its being partly owned by a Chinese state company.

Marcos agreed with the proposal of Tulfo, who chairs the Senate energy panel, to conduct a comprehensive study on the NGCP or hold hearings to determine the real situation of the power grid.

The Department of Energy proposed during a hearing at the House of Representatives on Tuesday amendments to the Electric Power Industry Reform Act of 2001 to prohibit foreign governments or state-owned enterprises from owning a stake in transmission operations.

Tulfo and a handful of other senators are calling for the re-nationalization of the power grid, although Sen. Francis Escudero warned that this might send a bad signal to foreign investors.