The National Power Corporation (Filipino: Pambansang Korporasyon sa Elektrisidad, also known as Napocor, NPC or National Power), is a Philippine government-owned and controlled corporation that is mandated to conduct missionary electrification throughout the Philippine archipelago. Prior to the deregulation of the power industry in the early 2000s, NPC was a vertically integrated power utility engaged in the production, transmission and distribution of electric power and used to be the largest provider and generator of electricity in the Philippines. It was also the principal power provider for Manila Electric Company, the only power distributor in the Metro Manila area.