MTerra Solar begins supplying 85 MW from its solar and battery project to the Luzon grid

Type: Development · Technology: Hybrid · Country: Philippines · Capacity: 85 MW · Announced: 2026-03-14

Meralco PowerGen Corporation, through its affiliate Terra Solar Philippines Inc., has begun supplying 85 MW of mid-merit power from its MTerra Solar project to the Luzon grid, marking the initial phase of power delivery. The project was energized as a generator on March 14, 2026, and is set to support peak daytime demand and deliver electricity to Meralco. Once fully completed, the MTerra Solar facility is expected to deliver 3,500 MWp of solar photovoltaic capacity paired with a 4,500 MWh battery energy storage system, making it one of the country's largest integrated solar and battery projects. Phase 1 of the project remains on track for completion this year, whilst Phase 2 is already under construction, with output expected to ramp up further in coordination with the National Grid Corporation of the Philippines. The facility is projected to supply clean energy to approximately 2.4 million households and avoid an estimated 4.3 million tonnes of carbon emissions annually.

Analysis

The initial 85 MW supply from MTerra Solar represents a critical step in integrating a massive 3,500 MWp solar and 4,500 MWh battery facility into the Luzon grid, directly addressing the Philippines' peak daytime demand. Meralco PowerGen Corporation, through Terra Solar Philippines Inc., is strategically deploying mid-merit power to stabilize supply for Meralco's 7.6 million customers, particularly in Metro Manila and surrounding provinces. This phased delivery, beginning with 85 MW, allows for a controlled ramp-up of one of the country's largest hybrid projects. The project's design, pairing solar photovoltaic capacity with a substantial battery energy storage system, ensures reliable power delivery even as solar generation fluctuates. This initial supply, energized on March 14, 2026, sets the stage for the full 3,500 MWp capacity to provide clean energy to approximately 2.4 million households. For Meralco, the Philippines' largest electric distribution utility, this project directly supports its core mission of serving over 7.6 million customers, ensuring grid stability with mid-merit power. Meralco PowerGen Corporation, as Meralco's power generation arm, is actively balancing its portfolio by developing and operating this significant hybrid facility. The phased construction, with Phase 1 on track for completion this year and Phase 2 already underway, demonstrates MGen's commitment to scaling its generation assets. Coordination with the National Grid Corporation of the Philippines will be essential for integrating the project's future output into the Luzon grid, ultimately avoiding an estimated 4.3 million tonnes of carbon emissions annually.

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