Philippines' largest solar battery project

August 02, 2026

The Philippines has taken a significant step toward a cleaner energy future with the launch of the first phase of the MTerra Solar Project, an ambitious renewable energy development that is expected to become the world's largest integrated solar and battery storage facility built on a single site. Once fully operational, the project will play a major role in strengthening the country's energy security, reducing carbon emissions, and accelerating the transition away from fossil fuels. 

MTerra Solar sets a new global benchmark

President Ferdinand Marcos Jr. officially inaugurated the first stage of the MTerra Solar Project, located across the provinces of Nueva Ecija and Bulacan. Developed through a partnership between Meralco PowerGen (MGEN) and global infrastructure investor Actis, the renewable energy complex represents one of the largest clean energy investments in Philippine history. 

The project's initial phase has already delivered:

• 1,373 MW of solar photovoltaic (PV) capacity
• 825 MW of battery energy storage
• 3,300 MWh of installed battery storage capacity

Following grid integration and commercial commissioning, the facility will begin supplying hundreds of megawatts of clean electricity to the national grid under long-term power agreements. 

3.5 GW of solar power with massive battery storage

When construction is completed, MTerra Solar is expected to feature:

• 3,500 MWp of installed solar capacity
• 4,500 MWh of battery energy storage
• Electricity for more than 2.4 million households
• Annual emissions reductions of approximately 4.3 million metric tons of CO₂

These figures position the project as the largest integrated solar-plus-storage installation in the world, demonstrating how utility-scale renewable energy can support growing electricity demand while reducing dependence on imported fossil fuels. 

Why battery storage Is critical

While solar power generates electricity only during daylight hours, large-scale battery systems allow excess energy to be stored and delivered after sunset or during periods of peak demand.

This combination offers several advantages:

• Improves grid reliability
• Increases renewable energy utilization
• Reduces reliance on coal and natural gas
• Enhances resilience against fuel price volatility
• Supports stable electricity supplies during demand spikes

As battery technology continues to advance, integrated solar-storage projects are becoming essential components of modern power systems worldwide. 

Supporting the Philippines' renewable energy strategy

The MTerra Solar Project aligns with the Philippine government's long-term energy objectives, which aim to increase renewable energy's contribution to electricity generation to 35% by 2030 and 50% by 2040.
With electricity demand expected to rise due to population growth, industrial expansion, and digital infrastructure development, large renewable energy projects are becoming increasingly important for meeting future power needs while lowering greenhouse gas emissions. 

Boosting energy security and economic growth

Beyond environmental benefits, the project is designed to strengthen national energy independence by reducing exposure to volatile global fuel markets.

Officials expect MTerra Solar to:

• Improve long-term energy security
• Lower dependence on imported coal and natural gas
• Support local employment during construction and operation
• Generate economic benefits for surrounding communities
• Expand investment in clean energy infrastructure

The project demonstrates how large-scale renewable energy developments can simultaneously deliver economic growth, energy resilience, and climate benefits. 

A milestone for global renewable energy

The MTerra Solar Project highlights the growing momentum behind utility-scale solar and battery storage worldwide. As nations seek reliable low-carbon electricity, integrated renewable energy facilities are increasingly becoming the preferred solution for balancing sustainability with grid stability.
With its record-breaking scale and advanced battery system, the Philippines is positioning itself as a leader in renewable energy deployment while setting a new benchmark for future solar-plus-storage projects across Asia and beyond.