The Department of Energy (DOE) said the first 364 megawatts (MW) of the Terra Solar project is on track to be completed by the first quarter of 2026, following progress in its connection to the power grid.
Thw DOE said a key milestone was reached after the 500-kilovolt Terra Solar substation was energized and connected to the National Grid Corporation of the Philippines’ Nagsaag–San Jose transmission line on December 21.
The project is part of the government’s push to complete nearly 200 power generation projects over the next three years to improve the country’s energy security, as earlier announced by President Ferdinand Marcos Jr.
Terra Solar, which will span parts of Nueva Ecija and Bulacan, is designed to produce up to 2,500 MW of solar power combined with battery energy storage. Once fully completed, it is expected to be the world’s largest integrated solar and battery storage facility, capable of supplying electricity to around 2.4 million households and cutting up to 4.3 million tons of carbon emissions each year.
The DOE said it is closely monitoring the project to ensure it is completed on time and meets safety and grid reliability standards.
As of November 2025, the DOE reported that 956 MW of new power generation capacity has been added nationwide, along with 160 MW of new energy storage capacity in Luzon and the Visayas. Most of the new plants use renewable energy, with one oil-based and one natural gas-fired facility.
According to the DOE, these additions help meet peak demand, reduce the risk of power shortages, and improve grid flexibility as electricity demand continues to grow.
The agency said it continues to work with project developers and the NGCP to monitor construction progress, address potential delays, and ensure new power capacity is delivered when needed.
