Meralco PowerGen Corporation through its affiliate Terra Solar Philippines Inc has completed the initial grid synchronisation and energisation of the MTerra Solar project, confirming system readiness and safe connection to the Luzon grid.
The milestone was marked during an event titled The First Spark held on 12 February in Gapan, Nueva Ecija, attended by representatives from the Department of Energy, the National Grid Corporation of the Philippines, and global infrastructure investor Actis.
Dennis B Jordan, President and Chief Executive Officer of MGEN Renewables and MTerra Solar, said the achievement demonstrates the project’s ability to deliver both scale and operational reliability.
He stated that the successful synchronisation confirms the company is on track not only in expanding capacity but also in ensuring safe and dependable operations. He added that the project will now move forward with confidence, continuing to scale up capacity, drive innovation and deliver clean energy to Filipino consumers.
The initial grid synchronisation follows the successful energisation and cut in of the project’s 500 kilovolt substation along the Nagsaag San Jose 500 kilovolt Line 2, a critical transmission asset supporting grid integration.
Phase 1 of MTerra Solar is progressing on schedule. As of end January 2026, the project has installed 1,288 MWdc of solar photovoltaic capacity, making it the largest solar installation in the Philippines. In parallel, 622 battery energy storage system units have been installed and are expected to form the country’s largest battery storage portfolio once fully operational.
Following the latest milestone, MTerra Solar is targeting 250 MWac of solar capacity and 112.5 MWh of battery energy storage to be ready by the end of February 2026. During this phase, the facility is set to begin exporting 85 MW of constant power to the grid in close coordination with the National Grid Corporation of the Philippines, demonstrating the stability and reliability of the integrated renewable energy and storage system ahead of further capacity ramp up in the coming months.
Notably, all major developments to date have been delivered in less than 15 months since groundbreaking, underscoring the accelerated execution strategy behind the project.
Author: Bryan Groenendaal
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