The Philippines’ Department of Energy has released the Terms of Reference (TOR) for the country’s fourth round of the Green Energy Auction (GEA-4), which aims to accelerate renewable energy transition by adding 9,378 MW of new capacity from ground-mounted solar, roof-mounted solar, floating solar, and onshore wind projects.

GEA-4 features the integration of Renewable Energy and Energy Storage Systems (IRESS), marking the first auction to feature solar power plants paired with Battery Energy Storage Systems (BESS). With an additional 1,100 MW of solar capacity equipped with storage, the auction is expected to enhance grid stability and support rising electricity demand.

The auction capacity is distributed across multiple renewable energy technologies, with staggered installation targets from 2026 to 2029. In 2026, 2,744 MW across ground-mounted solar, roof-mounted solar, floating solar, and onshore wind should be installed, plus 200 MW of solar + ESS (IRESS). In 2027, 2,362 MW from solar and wind projects should be installed, with 200 MW allocated for IRESS. In 2028, 2,766 MW would be installed, including 350 MW of solar + ESS. In 2029, 1,506 MW, with 350 MW for IRESS, followed by 1,506 MW (plus 350 MW of solar + ESS) in 2029.