Terra solar project achieves grid synchronization

Meralco PowerGen Corp. affiliate Terra Solar Philippines Inc. successfully completed the initial grid synchronization and energization of its MTerra Solar project on Feb. 12, 2026, marking a milestone for what is slated to become the world’s largest integrated solar and battery storage facility.

The achievement confirms system readiness and a safe connection to the Luzon grid, with the project expected to add much-needed capacity in time for high electricity demand during the dry months.

The event, titled “The First Spark,” was attended by officials from the Philippine Department of Energy, the National Grid Corp. of the Philippines and project partner Actis.

Phase 1 of the development is progressing on schedule with 1,288 megawatts-direct current of installed solar photovoltaic capacity as of late January 2026. In parallel, 622 battery energy storage system units have been installed.

Following the synchronization, the project will have 250 megawatts-alternating current of solar capacity and 112.5 megawatt-hours of battery storage targeted to be ready by the end of February.

“Today is an important moment because it tells us we are on the right track not just in delivering scale, but in proving that we can operate this project safely and reliably,” MGEN Renewables and MTerra Solar president and chief executive Dennis Jordan said.

“After a milestone like this, the message is clear: anything is possible from hereon,” he said.

During the current phase, the project will begin exporting 85 megawatts of constant power to the grid to demonstrate stability and reliability. These developments have been delivered in less than 15 months since the project broke ground.

Department of Energy Secretary Sharon Garin said the synchronization represents a major step in strengthening the renewable energy pipeline. “This power plant alone — once completed — will be producing power for 10 percent of Luzon,” Garin said.

Department of Energy Undersecretary Rowena Guevara noted the project reflects the innovation needed to support growing electricity demand, particularly during peak summer months. “Today’s switch-on initiates the energization process that will enable MTerra Solar to begin exporting power to the grid,” Guevara said.

The project has also drawn international attention. Actis managing-director and head of operations for energy infrastructure Barry Lynch said the global energy industry is watching the development closely. “No matter where I go in the world, everyone wants to talk about the MTerra Solar project — whether it’s in Brazil, India or Japan,” Lynch said.

Meralco PowerGen Corp. president and chief executive Emmanuel Rubio said the milestone marks the beginning of a larger phased buildout. “MTerra Solar proves the Philippines can build big and build fast. Today’s energization is not the finish line; it is the start of a bigger journey,” Rubio said.

Construction for Phase 2 has already commenced with the installation of the first piles. Once fully completed, the facility will support the national goal of achieving a 50 percent renewable energy mix by 2040.