en.Wedoany.com Reported - The first phase of the MTerra Solar project, completed by Meralco PowerGen Corp. (MGEN) and its partners, is currently one of the world's largest integrated solar and battery projects.
This initial phase has achieved grid connection for 1,373 megawatts (MW) of solar photovoltaic capacity and 825 MW (equivalent to 3,300 megawatt-hours) of battery energy storage system. Once fully completed, the project is expected to become the world's largest integrated solar and battery project.
Currently, the facility's power export capacity to the Luzon grid is limited to 750 MW, pending completion of remaining grid-related work with the system operator. The project has achieved full energization of all 741 battery units, enabling the supply of clean electricity to the Luzon grid. The company stated that, following the completion of necessary grid tests, the project is ready to commence power supply under a 600 MW mid-merit power supply agreement with Meralco.
Speaking at the commissioning ceremony, Philippine President Ferdinand Marcos Jr. noted that the project demonstrates the country's capability to achieve large-scale renewable energy development. He said: "The MTerra Solar project proves that the Philippines can not only envision but also implement."
MGEN Chairman Manuel Pangilinan stated: "What we are commissioning today will be the world's largest single-site solar and battery energy storage facility. It is not in Texas, nor in the Gobi Desert, but located in Gapan City, Nueva Ecija." MGEN President and CEO Emmanuel Rubio added that, in addition to building one of the world's most significant renewable energy facilities, the project is also helping to build a stronger, more resilient Philippine energy system to support the country's long-term economic growth.
As of the end of June 2026, Phase 1 has installed over 2,000 MWdc of solar photovoltaic panels. The project has also achieved over 30 million work hours without a lost time incident, highlighting its safety performance during construction.
