Synergy Grid & Development Phils., Inc. is a Philippines-based holding company. The Company is engaged in general construction and other allied businesses. The Company operates through its transmission services across Luzon, Visayas, and Mindanao. The Company's subsidiaries include OneTaipan Holdings, Inc. (OTHI), Pacifica21 Holdings, Inc. (P21), Monte Oro Grid Resources Corporation (MOGRC), Calaca High Power Corporation (CHPC), and National Grid Corporation of the Philippines (NGCP). The CHPC engages in the general business of operating, managing, maintaining, and rehabilitating energy systems and services from gas, steam, and electricity including related services and business activities. The NGCP operates and maintains a nationwide transmission grid throughout the Philippines to provide open and non-discriminatory access to the transmission system to all authorized electricity distributors and electricity users.