Meralco PowerGen Corp. (MGen) is developing a 49-megawatt (MW) Battery Energy Storage System (BESS) in Toledo, Cebu.
The Manila Electric Company subsidiary said in a statement on Monday that the facility is expected to enhance grid stability and support the country’s energy transition.
While MGen has yet to disclose the project’s value, it stated that the first phase—an initial 25 MW—could be completed by next year, with the remaining capacity scheduled for completion by 2027, subject to regulatory approvals.
The company emphasized that BESS projects help ensure reliable and balanced power delivery, particularly in managing system reliability and providing sufficient grid support during peak and off-peak hours in areas with intermittent renewable energy sources.
“This battery energy storage project will be critical in managing variability in supply and demand, especially as we integrate more renewable energy into the system,” Emmanuel Rubio, MGen president and chief executive officer stated.
The Toledo development marks MGen’s second BESS initiative in the Philippines, following the 4,500 megawatt-hour storage component of the MTerra Solar project currently under construction in Nueva Ecija. That system will be paired with a 3,500 MW solar power capacity.
MGen stated that the MTerra Solar project is expected to be completed in two phases, with the first phase scheduled for 2026 and the second for 2027.
Upon completion, MTerra Solar is projected to become the world’s largest integrated solar photovoltaic and battery energy storage facility, capable of powering approximately 2.4 million households. It is also estimated to reduce carbon emissions by 4.3 million tons annually—equivalent to taking more than three million gasoline-powered vehicles off the road.
This year, through its renewable energy arm MGreen, MGen aims to add 85.2 MW of solar capacity to its portfolio.
It plans to inaugurate solar plants in Cordon, Isabela, and expand an existing facility in Baras, Rizal, following the recent launch of a 52.8 MW solar power plant in Cordon.
