The Philippines has inaugurated the first phase of MTerra Solar, one of the world's largest solar-plus-storage projects, in the Luzon provinces of Nueva Ecija and Bulacan. The first phase has energized roughly 1,373 MW of solar PV and 825 MW (3.3 GWh) of battery storage, pv magazine reports.
Key facts
- Phase 1 capacity energized: 1,373 MW of solar and 825 MW / 3.3 GWh of battery storage (741 battery units)
- Full project on completion: 3.5 GW of solar and 4.5 GWh of battery storage
- Maximum grid export: 750 MW to the Luzon grid (pending grid works)
- Offtake: a 600 MW mid-merit power supply agreement with distribution utility Meralco
- Location: Nueva Ecija and Bulacan, Luzon
- Peak construction workforce exceeded 10,000 workers
- Timeline: Phase 1 targeting full commercial availability by August 2026; Phase 2 scheduled for 2027
Why it matters
MTerra is a marker of how gigawatt-scale solar paired with multi-GWh storage is moving into fast-growing Southeast Asian grids, not just the Gulf and China. Pairing 1.37 GW of PV with 3.3 GWh of batteries in a single phase lets a sun-heavy system deliver dependable, dispatchable "mid-merit" power — directly displacing imported fuel that leaves the country exposed to global price swings.
For the supply chain, projects on this scale concentrate enormous demand for modules, battery cells, inverters, transformers and EPC capacity in one location, and the Meralco offtake shows utilities are willing to contract firmed solar as a core supply block rather than a variable add-on.
For installers, EPCs and storage integrators across the ASEAN region, the signal is that the region's pipeline is maturing from megawatt to gigawatt scale — with storage attachment increasingly the default, not the exception.
Sources
- pv magazine coverage - July 15, 2026
SolarXList summary based on publicly available industry sources checked on July 16, 2026.