MTerra solar project, being delivered by Terra Solar Philippines Inc. – a subsidiary of MGen Renewable Energy (MGreen) under the Meralco PowerGen (MGEN) umbrella – is one of the largest integrated solar and battery storage facilities in the world. It achieved initial grid synchronization and energization with the Luzon grid in February 2026, well ahead of full commissioning. MTerra project features 3,500 MW of solar photovoltaic capacity and 4,500 MWh of battery energy storage across Nueva Ecija and Bulacan. The project has also erected upwards of 1,288 MWdc of PV and installed over 600 storage units on-site, positioning MTerra to supply firm low-carbon electricity to the Philippine grid and support long-term clean energy targets while powering millions of homes. This renewable transition in being done alongside offshore wind development in the Philippines which is picking up steady pace ahead of the upcoming Fifth Green Energy Auction (GEA-5).

Project team behind MTerra Solar Project in the Philippines

Lead developer and owners

• Terra Solar Philippines Inc. (MTerra Solar) as company developing the integrated facility.

• Controlled by MGen Renewable Energy Inc. (MGreen) as renewable energy arm of MGen and part of the Meralco Group.

• Meralco PowerGen Corporation (MGEN) as parent generation company.

• SP New Energy Corporation (SPNEC) as holding company for Terra Solar Philippines.

Financial partner

• Actis Rubyred (Actis) – UK-based global infrastructure investor holding a 40% stake via investment of USD 600 million.

• Consortium of Philippine banks who provided PHP 150 billion omnibus financing backing construction.

Engineering, procurement and construction (EPC)

• Energy China – solar and civil works partner.

• POWERCHINA – EPC partner for major infrastructure.

• MIESCOR – infrastructure and grid connection contractor.

• Huawei – supplier of battery energy storage systems (BESS).

• Maxipro Development Corp. – grid interconnection contractor for high-voltage line.

• Fujian Electric Power and Engineering Co., Ltd. – grid integration works.

• Asia Pacific Rim International Construction and Trading Corp. – medium-voltage switchgear and balance-of-plant support.

Transmission and grid Partners

• National Grid Corporation of the Philippines (NGCP) – transmission grid operator responsible for integrating MTerra Solar’s output via the Nagsaag-San Jose 500-kV corridor.

• Energy Regulatory Commission (ERC) – regulator that approved dedicated transmission link facilities for MTerra.

• Philippines Department of Energy (DOE) – government regulator certifying the project as nationally significant.

Government and community partners

• Philippines Board of Investments (BOI) – awarded Green Lane certification to fast-track permits.

• Municipalities of Gapan, Peñaranda, General Tinio, San Leonardo (Nueva Ecija) and San Miguel (Bulacan) – host communities supporting local development.

MTerra Solar Project in the Philippines to be the world’s largest integrated solar and battery facility

Reported December 10, 2024 – The world’s largest solar farm and storage facility is taking shape in NEcija in the Philippines as construction is set to commence. President Ferdinand Marcos Jr. led the groundbreaking of the solar project on Thursday, a monumental achievement. The Meralco Terra (MTerra) Solar Project is expected to be the largest integrated solar and battery facility globally. In his speech in Nueva Ecija, the president noted the significance of the landmark project in the Philippines. He also said it would put the country on the map as a leader in renewable energy.

Furthermore, he added that with an investment of over $3.4 billion, the project demonstrated the confidence of the nation’s stakeholders. He also noted that it showed the Philippines’s “commitment to securing a stable, steady, reliable, and sustainable power supply.” The government has shown accolades for the project, noting its importance in ensuring sustainable energy. Once completed, the MTerra Solar project will power over 2 million households.

Project summary

Location: Philippines

Capacity: 3.5 GW

Significance: World’s Largest Solar Farm

Project duration: 3 years

Cost of Project: US$3.5 Billion

State of affairs regarding the multi-billion-dollar solar project

Terra Solar Philippines, Inc. (TSPI) has brought on board Power China to help implement the world’s largest solar farm. The Chinese-based company is mandated with the construction of a portion of the project. Moreover, they signed an engineering, procurement, and construction (EPC) contract with TSPI. The scope of the contract covers their construction of the east-side development of the MTerra Solar Project. TSPI President and Executive Director Dennis B. Jordan noted the endeavor as a monumental achievement.

“MTerra Solar serves as our bold step towards ensuring a sustainable energy future for the Philippines. With Power China as our partner, we are well on our way to achieving our vision of a cleaner energy future for the Philippines,” he noted. Noted to be the world’s largest solar project, it will cover a span of five towns. These include Gapan, General Tinio and Penaranda. It also covers the town of San Leonardo. All these four towns are in Nueva Ecija. It also includes San Miguel which is in Bulacan.

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Power China’s role

Under the signed agreement on the world’s largest solar farm, Power China has been assigned a fundamental role. Power China is expected to handle the development of the east side, which spans approximately 1,505 hectares. Moreover, the allocated section accounts for 1,050 MWp of the project’s total capacity. The agreement also covers various aspects of the project, such as warranty, defect resolution, and the implementation of operational and maintenance protocols. These measures aim to ensure the long-term reliability and success of the project. “We sign this EPC agreement with Power China recognizing their expertise, exceptional track record, and unwavering commitment to excellence. We know they will help us realize our bold ambition,” MGen President and Chief Executive Officer Emmanuel V. Rubio said.

Significance of the world’s largest solar farm

Apart from ensuring a sustainable power supply, the world’s largest solar farm is expected to have numerous benefits. One of these includes the reduction of carbon emissions in Nueva Ecija. It will also meet the growing demand of electricity in the Philippines, as its economy develops. The president noted that, “once fully operational by 2027, this facility will deliver 3.5GW peak of solar power to the Luzon grid. Moreover, 4.5GW-hour will be battery energy storage.” His remarks were appreciated by many as he further noted that the solar farm would reduce carbon emissions by more than 4.3 million metric tons annually.

In perspective, he equated the farm’s impact to removing 3 million gasoline-powered cars from the roads. This is a decisive action that helps the world address global warming and climate change. Apart from benefitting locals, the project is expected to create over 10,000 job opportunities. It will also boost local economies and open doors for growth and development in the country. Over the next decade, the plant is expected to generate over $390 million in financial benefits. Furthermore, the funds generated may be channeled in other areas of the economy, creating progress in the Philippines.

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Scope of implementation on the multi-billion MTerra solar project

The implementation of the world’s largest solar farm aims to span 3,500 hectares over five towns. It will cover towns in Nueva Ecija and Bulacan. It will be connected to the existing 500-kiloVolt (500kV) Nagsaag-San Jose Transmission Line. Later, it will be linked to the upcoming 500-kV Nagsaag-Marilao Transmission Line. Moreover, it is expected to cost about $3.5 billion, the facility will have a 3.5GW peak photovoltaic capacity. Furthermore, it will be complemented by a 4.5GW-hours battery energy storage system (BESS). The scope also entails the construction of the MTerra solar project in phases, with the first phase covering an initial capacity of 2,500MW. “We are working towards a steady and reliable power supply that will meet the demands of today and continuously fuel our ambitions for tomorrow,” President Marco noted. “Projects like Terra Solar bring us closer to that vision,” he added.

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