Institute for Climate and Sustainable Cities OFFICIAL STATEMENT Rooftop solar photovoltaic (PV) systems are a critical component of the Philippines’ energy transition, offering a decentralized and increasingly affordable solution to rising electricity demand. Yet a significant portion of these systems—particularly small- to medium-scale installations—remain unregistered and therefore invisible in official energy accounting. This leads to an underestimation of actual renewable energy (RE) capacity and generation, with implications for planning, demand forecasting, and tracking progress toward national RE target share in the power generation mix of 35% by 2030, increasing to 50% by 2040, and over 50% by 2050.  Recently, [...]