The Philippines has brought the world’s largest operational single-site solar and battery storage facility online. (Photo: Meralco)
The Philippines inaugurated the first phase of the MTerra Solar Project on July 14, bringing online what its developers describe as the world’s largest operational solar and battery storage facility built on a single site.
MTerra’s first phase has energized 1,373 MW of solar photovoltaic capacity and 825 MW, or 3,300 MWh, of battery energy storage.
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MTerra’s grid exports remain capped at 750 MW despite 1,373 MW of solar capacity already being energised, with full commercial operations awaiting the completion of transmission integration works.
Phase 2 is under construction and scheduled for completion in 2027, which would bring the project’s total capacity to 3,500 MWp of solar and 4,500 MWh of battery storage across more than 3,500 hectares.
Aurora Energy Research said MTerra’s ramp-up is intensifying solar cannibalisation in the Luzon spot market, as rising daytime supply compresses midday prices and increases the importance of co-located storage to future project economics.
